DTC    P1603    Engine Stall History

DTC    P1605    Rough Idling

for Preparation Click here


DESCRIPTION

  1. P1603
After starting the engine, this DTC is stored when the engine stops without the engine switch being operated.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle has ran out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.

DTC No.
DTC Detection Condition
Trouble Area
P1603
After monitoring for startability problems (P1604) finishes and 5 seconds or more elapse after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 rpm or less) without the ignition switch being operated for 0.5 seconds or more (1 trip detection logic).
  1. Air leak in intake system
  2. Purge VSV
  3. Brake booster
  4. Mass air flow meter
  5. Engine coolant temperature sensor
  6. Thermostat
  7. Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly)
  8. Fuel pump
  9. Fuel pump control circuit
  10. Fuel line
  11. PCV valve and hose
  12. Camshaft timing oil control valve
  13. Knock sensor
  14. Ignition system
  15. Air conditioning system
  16. Power steering system
  17. Electrical load signal system
  18. Charging system
  19. A/T system
  20. Park/neutral position switch assembly
  21. ECM
  22. Wire harness or connector
  23. Engine immobiliser system
  1. P1605
This DTC is stored if the engine speed drops below the set speed without the ignition switch being operated.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when idling is unstable due to running out of fuel.

DTC No.
DTC Detection Condition
Trouble Area
P1605
After 5 seconds or more elapse after starting the engine, with the engine running, the engine speed drops to 400 rpm or less without the ignition switch being operated (1 trip detection logic).
  1. Air leak in intake system
  2. Purge VSV
  3. Brake booster
  4. Mass air flow meter
  5. Engine coolant temperature sensor
  6. Thermostat
  7. Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly)
  8. Fuel pump
  9. Fuel pump control circuit
  10. Fuel line
  11. PCV valve and hose
  12. Camshaft timing oil control valve
  13. Knock sensor
  14. Ignition system
  15. Air conditioning system
  16. Power steering system
  17. Electrical load signal system
  18. Charging system
  19. A/T system
  20. Park/neutral position switch assembly
  21. ECM
  22. Wire harness or connector
  23. Engine immobiliser system

INSPECTION PROCEDURE

HINT:
  1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 and P1605 are used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.
    As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
  2. If any other DTCs are output, perform troubleshooting for those DTCs first.
  3. Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference.

    Symptom
    Suspected Area
    Engine vibration occurs and engine stops
    Air-fuel ratio abnormal
    Engine stops with no engine vibration
    Ignition system, injection stoppage, high load from external parts
    Engine can be started with accelerator pedal depressed
    Insufficient air volume
    Rough idling after engine started
    Air-fuel ratio abnormal, abnormal combustion
  4. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
  5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data (Click here).
  6. When DTC P1603 (Engine Stall History) is stored, DTC P1605 (Rough Idling) is also stored. When confirming freeze frame data, check DTC P1605. The ECM stores DTC P1605 first. Therefore, 5 sets of freeze frame data can be confirmed through DTC P1605, enabling the technician to obtain more information.
  7. When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
  8. Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N) and compare these data with the freeze frame data.
  9. Inspections take into account the fact that the malfunction may not have reoccurred and place emphasis on checking the vehicle conditions present at the time when the malfunction occurred.
  10. When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.

Inspection flow:
Using freeze frame data, narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred.
  1. P1603:

A226063E01

1:
  1. If the engine stalled when the intake air volume was low (during idling or deceleration), there may be a decrease in torque due to an incorrect air-fuel ratio, etc.
  2. If the engine stalled when the intake air volume was high (during driving or acceleration), there may be a major malfunction such as continuous misfire due to ignition stoppage, fuel injection stoppage, etc. and the torque drops to zero.
2:
  1. If the engine speed decreased slowly, there may have been a decrease in torque due to an air-fuel ratio that was incorrect (by approximately 20 to 30%), etc.
  2. If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.
3:
  1. If the air-fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
  2. If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.
P1603 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

Vehicle State
Engine Speed
Suspected Area
Primary Parts to Inspect
Procedure
Idling or decelerating
Slowly decreases and engine stalls
Ignition system abnormal
Igniter abnormal
  1. Power supply circuit
  2. Ignition coil assemblies
  3. Spark plug
10, 38, 52
Air-fuel ratio abnormal
Air suction
  1. Intake system connections
  2. Purge VSV system
  3. Brake booster
5 to 9
Sensor malfunction (value from sensor too lean)
  1. Mass air flow meter
  2. Engine coolant temperature sensor
  3. Air fuel ratio sensor system
  4. Thermostat
11 to 23
Sensor malfunction (value from sensor too rich)
39 to 51
Fuel supply problem
  1. Fuel pump control circuit
  2. Purge VSV system
  3. Fuel line
  4. ECM
24 to 37
Intake air volume insufficient
Problem with air passage
  1. Intake system connections
  2. Mass air flow meter
  3. Brake booster
  4. PCV valve and hose
  5. Purge VSV system
53 to 55
Excessive valve overlap
  1. Camshaft timing oil control valve
56 to 59
Ignition timing incorrect
Does not operate as expected
  1. Knock sensor
  2. Engine coolant temperature sensor
  3. Mass air flow meter
60 to 64
Rapidly decreases and engine stalls
Ignition and injection stops (electrical system malfunction)
Power temporarily cut
  1. Power supply circuit (fuel injector assembly, ignition coil assembly)
65, 66
External part malfunctioning
Increase in load
  1. Air conditioning system
  2. Electrical load signal system
  3. Power steering system
  4. A/T system
  5. Park/neutral position switch assembly
67 to 69
Accelerating
-
Crankshaft position sensor or VVT sensor malfunction
Power temporarily cut
  1. Check DTCs
1
Mass air flow meter
Foreign matter adhesion
  1. Mass air flow meter
70 to 73
Ignition and injection stops (electrical system malfunction)
Power temporarily cut
  1. Power supply circuit (fuel injector assembly, ignition coil assembly)
74, 75
Fuel supply problem
Fuel leak, clog
  1. Fuel pump control circuit
  2. Fuel line
76 to 80
  1. P1605:

A226064E01

1:
  1. If the engine speed decreased slowly, there may have been a decrease in torque due to an air-fuel ratio that was incorrect (by approximately 20 to 30%), etc.
  2. If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.
2:
  1. If the air-fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
  2. If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.
P1605 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

Engine Speed
Suspected Area
Primary Parts to Inspect
Procedure
Slowly decreases and engine stalls
Ignition system abnormal
Igniter abnormal
  1. Power supply circuit
  2. Ignition coil assemblies
  3. Spark plug
10, 38, 52
Air-fuel ratio abnormal
Air suction
  1. Intake system connections
  2. Purge VSV system
  3. Brake booster
5 to 9
Sensor malfunction (value from sensor too lean)
  1. Mass air flow meter
  2. Engine coolant temperature sensor
  3. Air fuel ratio sensor system
  4. Thermostat
11 to 23
Sensor malfunction (value from sensor too rich)
39 to 51
Fuel supply problem
  1. Fuel pump control circuit
  2. Purge VSV system
  3. Fuel line
  4. ECM
24 to 37
Intake air volume insufficient
Problem with air passage
  1. Intake system connections
  2. Mass air flow meter
  3. Brake booster
  4. PCV valve and hose
  5. Purge VSV system
53 to 55
Excessive valve overlap
  1. Camshaft timing oil control valve
56 to 59
Ignition timing incorrect
Does not operate as expected
  1. Knock sensor
  2. Engine coolant temperature sensor
  3. Mass air flow meter
60 to 64
Rapidly decreases and engine stalls
Ignition and injection stops (electrical system malfunction)
Power temporarily cut
  1. Power supply circuit (fuel injector assembly, ignition coil assembly)
65, 66
External part malfunctioning
Increase in load
  1. Air conditioning system
  2. Electrical load signal system
  3. Power steering system
  4. A/T system
  5. Park/neutral position switch assembly
67 to 69

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK FOR ANY OTHER DTCS OUTPUT
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine / Trouble Codes.

  1. Read the DTCs (Click here).

    Result 
    Result
    Proceed to
    Only DTC P1603 and/or P1605 is output
    A
    DTCs other than P1603 and/or P1605 are output
    B

    HINT:
    If any DTCs other than P1603 or P1605 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (Click here)
A


2.CHECK FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    OK:
    Immobiliser Fuel Cut is OFF.

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B


B
Go to step 4
A


3.CHECK ENGINE IMMOBILISER SYSTEM
  1. Connect the Techstream to the DLC3.

  1. Start the engine.

  1. Idle the engine

  1. Enter the following menus: Powertrain / Engine / Data List / Immobiliser Communication and Immobiliser Fuel Cut.

  1. Check the Data List indication.

    OK:

    Data List Item
    Result
    Immobiliser Communication
    ON
    Immobiliser Fuel Cut
    OFF

    Result 
    Result
    Proceed to
    OK
    A
    NG
    B


B
CHECK ENGINE IMMOBILISER SYSTEM (Click here)
A


4.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.



  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Problem Symptom
    Freeze Frame Data Item for DTC P1605
    Suspected Area
    Proceed to
    Closed Throttle Position SW
    Engine Speed
    Total of Short FT and Long FT
    When idling or decelerating, engine speed slowly decreases and engine stalls
    All 5 sets of freeze frame data are ON
    Decreases slowly*1
    All 5 sets of freeze frame data are +15% or more*2
    1. Air suction
    1. Sensor malfunction (value from sensor too lean)
    1. Fuel supply problem
    A
    At least 1 of the 5 sets of freeze frame data is -15% or less*3
    Sensor malfunction (value from sensor too rich)
    B
    All 5 sets of freeze frame data are from -15% to +15%
    1. Intake air volume insufficient
    1. Ignition timing incorrect
    C
    When idling or decelerating, engine speed rapidly decreases and engine stalls
    Decreases rapidly*1
    -
    1. Injection stoppage, ignition stoppage
    1. Load from external parts
    D
    When accelerating or driving at constant speed, engine stalls*4
    At least one is OFF
    -
    -
    1. Sensor malfunction
    1. Injection stoppage, ignition stoppage
    1. Fuel supply problem
    E

    A215381E01

    HINT:
    1. *1: A rapid decrease in engine speed may be caused by an electrical fault in the shared wiring of all or a number of cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions applies.
      Otherwise, the engine speed is considered to have decreased slowly.
      1. In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 rpm or more.
      2. In the freeze frame data, the engine speed at #5 is 120 rpm or less.
    1. If the vehicle speed is 30 km/h or less and the difference between Engine Speed and SPD (NT) is 100 rpm or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.)
    2. *2: When a DTC is stored, feedback compensation increases because the air-fuel ratio is determined to be lean.
    3. *3: When a DTC is stored, feedback compensation decreases because the air-fuel ratio is determined to be rich.
    4. *4: This item should be checked when DTC P1603 is output and is not necessary to check when only P1605 is output.


B
Go to step 38

C
Go to step 52

D
Go to step 65

E
Go to step 70
A


5.CHECK INTAKE SYSTEM
  1. Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (Click here).

    HINT:
    1. If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
    2. If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.

    OK:
    There is no air leakage.


NG
REPAIR OR REPLACE INTAKE SYSTEM
OK


6.CHECK PURGE VSV


    A172615
  1. Disconnect the purge hose (on the canister side) of the purge VSV.

  1. Start the engine.

  1. Idle the engine.

  1. Disconnect the connector of the purge VSV.

  1. Check if air flows through the purge VSV.

    OK:
    Air does not flow.
  1. Connect the connector of the purge VSV.

  1. Connect the purge hose of the purge VSV.

    HINT:
    When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Click here).


NG
REPLACE PURGE VSV (Click here)
OK


7.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Stop Light Switch
    At least 1 of the 5 sets of freeze frame data is ON
    Air suction from brake booster
    A
    All 5 sets of freeze frame data are OFF
    -
    B


B
Go to step 10
A


8.READ VALUE USING TECHSTREAM (SHORT FT)


    A217928E11
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of Short FT #1 and Short FT #2 in the Data List while depressing the brake pedal.

    Standard:
    Short FT #1 and Short FT #2 changes by +10% or less.

    HINT:
    When air leakage from the brake booster is present, the feedback compensation increases because the air-fuel ratio becomes lean.


NG
INSPECT BRAKE BOOSTER ASSEMBLY (Click here)
OK


9.PERFORM DRIVE TEST
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of Short FT #1 and Short FT #2 in the Data List.

    Standard:

    Data List
    Condition
    Specified Condition
    Short FT #1 + Long FT #1
    The conditions of the vehicle are matched to those present when the problem occurs
    -15 to +15%
    Short FT #2 + Long FT #2
    The conditions of the vehicle are matched to those present when the problem occurs
    -15 to +15%


NG
INSPECT BRAKE BOOSTER ASSEMBLY (Click here)
OK


10.CHECK IGNITION SYSTEM
  1. Perform ignition system On-vehicle Inspection (Click here).



NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK


11.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Calculate Load
    Below 90% of the current value of the vehicle*1
    Mass air flow meter
    A
    AFS Voltage B1S1
    AFS Voltage B2S1
    3.3 V or higher*2
    1. Air fuel ratio sensor
    2. Wire harness or connector
    B

    HINT:
    1. *1: If the mass air flow meter is malfunctioning and incorrectly measures the pressure to be less than the actual intake manifold pressure, the freeze frame data will show a low engine load value.
    2. *2: If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is lean, the actual air-fuel ratio will become rich and the engine may stall.


B
Go to step 15
A


12.CHECK MASS AIR FLOW METER
  1. Remove the mass air flow meter.

  1. Check for foreign matter in the airflow passage of the mass airflow meter.

    Result 
    Result
    Proceed to
    Visible foreign matter is not present
    A
    Visible foreign matter is present
    B


B
REPLACE MASS AIR FLOW METER (Click here)
A


13.CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)
  1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


14.PERFORM DRIVE TEST
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of Calculate Load in the Data List.

    Standard:

    Data List
    Specified Condition
    Calculate Load
    90 to 110% of the current value of the vehicle

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B


B
Go to step 18
A

REPLACE MASS AIR FLOW METER (Click here)  

15.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    A215382E27
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

  1. Idle the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.

  1. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

    Standard:
    Techstream Display
    Specified Condition
    Control the Injection Volume for A/F Sensor (+12.5%)
    Air fuel ratio sensor output voltage is below 3.1 V
    Control the Injection Volume for A/F Sensor (-12.5%)
    Air fuel ratio sensor output voltage is higher than 3.4 V
    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B

    HINT:
    The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.


B
Go to step 18
A


16.CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)
  1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT (Click here)
OK


17.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
  1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


18.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Proceed to
    Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp
    Difference in temperature between each item is less than 10°C*1
    A
    Difference in temperature between each item is 10°C or more*2
    B

    HINT:
    1. *1: A long time had elapsed after stopping the engine.
    2. *2: A long time had not elapsed after stopping the engine.


B
Go to step 21
A


19.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.



  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).


    A217929E01


    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Initial Engine Coolant Temp, Coolant Temp, Engine Run Time
    Range A
    1. Engine coolant temperature sensor
    2. Thermostat
    A
    Range B
    Engine coolant temperature sensor
    B
    Range C
    -
    C

    HINT:
    This step is not directly related to engine stall.


B
Go to step 22

C
Go to step 24
A


20.INSPECT THERMOSTAT

HINT:
For the thermostat inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Abnormal
A
Normal
B


B
Go to step 22
A

REPLACE THERMOSTAT (Click here)  

21.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Coolant Temp
    120°C or higher
    Engine coolant temperature sensor
    A
    Coolant Temp, Ambient Temp for A/C
    Engine coolant temperature is lower than outside temperature by 15°C or more
    Engine coolant temperature sensor
    Both freeze frame data items listed above
    Values are other than above
    -
    B


B
Go to step 24
A


22.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

HINT:
For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Normal
A
Abnormal
B


B
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)
A


23.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)
  1. Disconnect the ECM connector.

  1. Disconnect the engine coolant temperature sensor connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    Condition
    Specified Condition
    D74-76 (THW) - D28-2
    Always
    Below 1 Ω
    D74-98 (ETHA) - D28-1
    Always
    Below 1 Ω
    D74-76 (THW) or D28-2 - Body ground
    Always
    10 kΩ or higher

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


24.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    EVAP (Purge) VSV
    At least 1 of the 5 sets of freeze frame data is not 0%
    Purge VSV
    A
    All 5 sets of freeze frame data are 0%
    -
    B

    HINT:
    If the purge VSV is stuck closed, air-fuel ratio compensation by the purge VSV is incorrectly adjusted, and then the air-fuel ratio becomes lean and the engine may stall.


B
Go to step 33
A


25.PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL)


    A200511E01
  1. Disconnect the purge hose (on the canister side) of the purge VSV.

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Evap Control.

  1. Operate the purge VSV and check the airflow.

    OK:
    Activate the VSV for Evap Control
    Specified Condition
    ON
    Air flows
    OFF
    Air does not flow
    Result 
    Result
    Proceed to
    NG
    A
    OK
    B

HINT:
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.


B
Go to step 33
A


26.INSPECT PURGE VSV
  1. Inspect the purge VSV (Click here).



NG
REPLACE PURGE VSV (Click here)
OK


27.CHECK TERMINAL VOLTAGE (PURGE VSV POWER SOURCE)


    A161605E49
  1. Disconnect the purge VSV connector.

  1. Turn the ignition switch to ON.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    Switch Condition
    Specified Condition
    D29-1 - Body ground
    Ignition switch ON
    11 to 14 V

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR PURGE VSV POWER SOURCE CIRCUIT (Click here)
OK


28.CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
  1. Disconnect the purge VSV connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    Condition
    Specified Condition
    D29-2 - D74-63 (PRG)
    Always
    Below 1 Ω
    D29-2 or D74-63 (PRG) - Body ground
    Always
    10 kΩ or higher

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


29.CLEAR DTC
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear the DTCs (Click here).


NEXT


30.READ VALUE USING TECHSTREAM (EVAP (Purge) VSV)
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine for 15 minutes or more.

  1. Using the Techstream, read the value of EVAP (Purge) VSV in the Data List.

    Standard:

    Data List
    Specified Condition
    EVAP (Purge) VSV
    Value other than 0% is displayed

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


31.PERFORM ACTIVE TEST USING TECHSTREAM


    A200511E01
  1. Disconnect the purge hose (on the canister side) of the purge VSV.

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Evap Control.

  1. Operate the purge VSV and check the airflow.

    OK:
    Activate the VSV for Evap Control
    Specified Condition
    ON
    Air flows
    OFF
    Air does not flow
    Result 
    Result
    Proceed to
    NG
    A
    OK
    B

HINT:
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


32.CHECK CONNECTOR CONNECTION CONDITION (ECM)
  1. Check the ECM connector connection condition.

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
RECONNECT CONNECTOR CORRECTLY
OK

REPLACE ECM (Click here)  

33.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.

  1. When performing the Active Test, check for an operating sound from the fuel pump.

    Standard:

    Control the Fuel Pump / Speed
    Specified Condition
    ON
    Operating sound heard
    OFF
    Operating sound not heard

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
    3. If the fuel pump operating noise is abnormal, proceed to step 34.


B
Go to step 35
A


34.INSPECT FUEL PUMP
  1. Inspect the fuel pump (Click here).



NG
REPLACE FUEL PUMP (Click here)
OK

CHECK FUEL PUMP CONTROL CIRCUIT (Click here)  

35.CHECK FUEL SYSTEM
  1. Check the fuel system.

    1. Check the fuel pump operation.
    2. Check the fuel leaks.
    3. Check the fuel pressure.
    4. Perform the Active Test.

HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Abnormal
A
Normal
B


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


36.CHECK FUEL SYSTEM
  1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.

    Result 
    Result
    Proceed to
    There is foreign matter or signs that fuel pump was stuck
    A
    There is no foreign matter and no signs that fuel pump was stuck
    B

    HINT:
    If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.


B
REPAIR OR REPLACE FUEL SYSTEM
A


37.CHECK FUEL SYSTEM
  1. Check the fuel system.

    1. Check the fuel pump operation.
    2. Check the fuel leaks.
    3. Check the fuel pressure.
    4. Perform the Active Test.

HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).


NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK

END 

38.CHECK IGNITION SYSTEM
  1. Perform ignition system On-vehicle Inspection (Click here).



NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK


39.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Calculate Load
    110% or more of the current value of the vehicle*1
    Mass air flow meter
    A
    AFS Voltage B1S1
    Below 3.3 V*2
    1. Air fuel ratio sensor
    2. Harness and connector
    B
    Both freeze frame data items listed above
    Values are other than above
    -
    C

    HINT:
    1. *1: If the mass air flow meter is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake manifold, the freeze frame data will show a high engine load value.
    2. *2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is rich, the actual air-fuel ratio will become lean and the engine may stall.


B
Go to step 43

C
Go to step 46
A


40.CHECK MASS AIR FLOW METER
  1. Remove the mass airflow meter.

  1. Check for foreign matter in the airflow passage of the mass air flow meter.

    Result 
    Result
    Proceed to
    Visible foreign matter is not present
    A
    Visible foreign matter is present
    B


B
REPLACE MASS AIR FLOW METER (Click here)
A


41.CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)
  1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


42.PERFORM DRIVE TEST
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of Calculate Load in the Data List.

    Standard:

    Data List
    Specified Condition
    Calculate Load
    90 to 110% of the current value of the vehicle


NG
REPLACE MASS AIR FLOW METER (Click here)
OK


43.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    A215382E27
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

  1. Idle the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.

  1. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

    Standard:
    Techstream Display
    Specified Condition
    Control the Injection Volume for A/F Sensor (+12.5%)
    Air fuel ratio sensor output voltage is below 3.1 V
    Control the Injection Volume for A/F Sensor (-12.5%)
    Air fuel ratio sensor output voltage is higher than 3.4 V
    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B

    HINT:
    The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.


B
Go to step 46
A


44.CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)
  1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT (Click here)
OK


45.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
  1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


46.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Proceed to
    Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp
    Difference in temperature between each item is less than 10°C*1
    A
    Difference in temperature between each item is 10°C or more*2
    B

    HINT:
    1. *1: A long time had elapsed after stopping the engine.
    2. *2: A long time had not elapsed after stopping the engine.


B
Go to step 49
A


47.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.



  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).


    A217929E01


    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Initial Engine Coolant Temp, Coolant Temp, Engine Run Time
    Range A
    1. Engine coolant temperature sensor
    2. Thermostat
    A
    Range B
    Engine coolant temperature
    B
    Range C
    -
    C

    HINT:
    This step is not directly related to engine stall.


B
Go to step 50

C
Go to step 78
A


48.INSPECT THERMOSTAT

HINT:
For the thermostat inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Abnormal
A
Normal
B

HINT:
This step is not directly related to engine stall.


B
Go to step 50
A

REPLACE THERMOSTAT (Click here)  

49.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Coolant Temp
    120°C or higher
    Engine coolant temperature sensor
    A
    Coolant Temp, Ambient Temp for A/C
    Engine coolant temperature is lower than outside temperature by 15°C or more
    Engine coolant temperature sensor
    Both freeze frame data items listed above
    Values are other than above
    -
    B


B
Go to step 81
A


50.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

HINT:
For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Normal
A
Abnormal
B


B
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)
A


51.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)
  1. Disconnect the ECM connector.

  1. Disconnect the engine coolant temperature sensor connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    Condition
    Specified Condition
    D74-76 (THW) - D28-2
    Always
    Below 1 Ω
    D74-98 (ETHA) - D28-1
    Always
    Below 1 Ω
    D74-76 (THW) or D28-2 - Body ground
    Always
    10 kΩ or higher

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)  

52.CHECK IGNITION SYSTEM
  1. Perform ignition system On-vehicle Inspection (Click here).



NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK


53.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Result
    Suspected Area
    Proceed to
    Total of ISC Learning Value and ISC Feedback Value
    Below 80% of the current value of the vehicle
    Intake air volume insufficient
    A
    80% or more of the current value of the vehicle
    B


B
Go to step 56
A


54.CHECK INTAKE SYSTEM
  1. Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (Click here).

    HINT:
    1. If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
    2. If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.

    OK:
    There is no air leakage.


NG
REPAIR OR REPLACE INTAKE SYSTEM
OK


55.CHECK INTAKE SYSTEM
  1. Check the intake system.

    1. Inspect the brake booster assembly.
    2. Inspect the mass air flow meter.
    3. Check the PCV hose.
    4. Inspect the PCV valve.
    5. Inspect the purge VSV.

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B


B
Go to step 60
A

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

56.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)
  1. Connect the Techstream to the DLC3.

  1. Turn the Techstream on.

  1. Warm up the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank1) or Control the VVT Linear (Bank2).

    HINT:
    When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.
  1. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

    OK:

    Techstream Operation
    Specified Condition
    0%
    Normal engine speed
    100%
    Engine idles roughly or stalls

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
    3. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.


NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (Click here)
OK


57.CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM)
  1. Check the harnesses and connectors, referring to DTC P0010 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


58.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR)
  1. Connect the Techstream to the DLC3.

  1. Turn the Techstream on.

  1. Warm up the engine.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

    HINT:
    When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.
  1. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

    OK:

    Techstream Operation
    Specified Condition
    0%
    Normal engine speed
    100%
    Engine idles roughly or stalls

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
    3. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.


NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (Click here)
OK


59.CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM)
  1. Check the harnesses and connectors, referring to DTC P0013 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


60.READ FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Suspected Area
    Proceed to
    IGN Advance
    Knock Correct Learn Value
    Differs from the current value of the vehicle by 10° or more
    Less than 3°
    1. Engine coolant temperature sensor
    2. Mass air flow meter
    3. Knock sensor
    A
    3° or more
    -
    B
    Differs from the current value of the vehicle by less than 10°
    -
    -


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


61.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

HINT:
For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).


NG
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)
OK


62.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)
  1. Disconnect the ECM connector.

  1. Disconnect the engine coolant temperature sensor connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    Condition
    Specified Condition
    D74-76 (THW) - D28-2
    Always
    Below 1 Ω
    D74-98 (ETHA) - D28-1
    Always
    Below 1 Ω
    D74-76 (THW) or D28-2 - Body ground
    Always
    10 kΩ or higher

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


63.INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR)
  1. Inspect the mass air flow meter (Click here).

    HINT:
    If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.


NG
REPLACE MASS AIR FLOW METER (Click here)
OK


64.READ VALUE USING TECHSTREAM
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of IGN Advance and Knock Correct Learn Value in the Data List.

    Result 
    Freeze Frame Data Item for DTC P1605
    Proceed to
    IGN Advance
    Knock Correct Learn Value
    Differs from the current value of the vehicle by 10° or more
    Less than 3°
    A
    3° or more
    B
    Differs from the current value of the vehicle by less than 10°
    -

    HINT:
    If the results of the checks performed in steps 56 to 64 were all normal and the sum of ISC Feedback Value and ISC Learning Value in the Data List is 120% of the normal value or more, check for carbon deposits in the throttle body assembly. If there are carbon deposits, clean them off to finish the troubleshooting procedure.


B
END
A

CHECK KNOCK SENSOR CIRCUIT (Click here)  

65.CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)


    A198845E08
  1. Disconnect the fuel injector assembly connectors.

  1. Turn the ignition switch to ON.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Cylinder
    Tester Connection
    Switch Condition
    Specified Condition
    No. 1
    H1-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 2
    F1-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 3
    H2-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 4
    F2-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 5
    H3-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 6
    F3-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 7
    H4-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 8
    F4-2 - Body ground
    Ignition switch ON
    11 to 14 V

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.
    3. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)


NG
REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT (Click here)
OK


66.CHECK IGNITION SYSTEM
  1. Perform ignition system On-vehicle Inspection (Click here).



NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK


67.CHECK FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Suspected Area
    Proceed to
    A/C Signal
    Air Conditioner FB Val
    Power Steering Signal
    A/C Signal display does not change from OFF*
    -
    Does not change from OFF
    -
    A
    Changes from OFF to ON
    Power steering system
    A/C Signal display changes from OFF to ON*
    Value displayed for Air Conditioner FB Val does not increase
    Changes from OFF to ON
    Does not change from OFF
    -
    Value displayed for Air Conditioner FB Val increases
    -
    A/C system
    B

    HINT:
    1. *: Check not only the on/off state of the air conditioner but also the change in air conditioner load.
    2. Even if the results are normal, the power steering system and/or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system and/or A/C system.


B
CHECK AIR CONDITIONING SYSTEM
A


68.CHECK FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Suspected Area
    Proceed to
    Electrical Load Signal or Electric Load Feedback Val
    Electric Load Feedback Val
    Difference between Engine Speed and SPD (NT)
    Vehicle Speed
    Electrical Load Signal display changes from OFF to ON*3, or value displayed for Electric Load Feedback Val increases*
    Value displayed for Electric Load Val changes
    -
    -
    Electrical load signal circuit
    C
    Value displayed for Electric Load Val does not change
    At least 1 of the 5 sets of freeze frame data is less than 100 rpm
    Less than 30 km/h
    A/T system
    B
    30 km/h or more
    -
    A
    All 5 sets of freeze frame data are 100 rpm or more
    -
    -
    A
    Electrical Load Signal display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase
    -
    At least 1 of the 5 sets of freeze frame data is less than 100 rpm
    Less than 30 km/h
    A/T system
    B
    30 km/h or more
    -
    A
    All 5 sets of freeze frame data are 100 rpm or more
    -
    -
    A

    HINT:
    1. *: If the Electrical Load Signal display changes from OFF to ON, or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
    2. The normal value for the ISC learned value is engine displacement (liters) x 0.9.
    3. Even if the results are normal, the electrical load signal system and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system and/or A/T system.


B
CHECK AUTOMATIC TRANSMISSION SYSTEM

C
CHECK GENERATOR CIRCUIT (Click here)
A


69.CHECK FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item for DTC P1605
    Suspected Area
    Proceed to
    Shift SW Status (P Range)
    Shift SW Status (N Range)
    Neutral Position SW Signal
    P and N position are both OFF in at least one data set
    In D or R, NSW is ON
    Park/neutral position switch assembly
    A
    In D or R, NSW is OFF
    A/T system
    B
    All 5 sets of freeze frame data are ON
    -
    -
    C

    HINT:
    Even if the results are normal, the park/neutral position switch assembly and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or A/T system.


B
CHECK AUTOMATIC TRANSMISSION SYSTEM

C
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A

INSPECT PARK/NEUTRAL POSITION SWITCH 

70.CHECK FREEZE FRAME DATA
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

    Result 
    Freeze Frame Data Item
    Result
    Suspected Area
    Proceed to
    Throttle Sensor Position, Calculate Load
    Calculate Load decreases while Throttle Sensor Position increases
    Mass air flow meter
    A
    Calculate Load does not decrease while Throttle Sensor Position increases
    -
    B


B
Go to step 74
A


71.CHECK MASS AIR FLOW METER
  1. Remove the mass air flow meter.

  1. Check for foreign matter in the airflow passage of the mass airflow meter.

    Result 
    Result
    Proceed to
    Visible foreign matter is not present
    A
    Visible foreign matter is present
    B


B
REPLACE MASS AIR FLOW METER (Click here)
A


72.CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)
  1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Click here).

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


73.PERFORM DRIVE TEST
  1. Connect the Techstream to the DLC3.

  1. Start the engine and warm it up until the engine coolant temperature stabilizes.

    HINT:
    The A/C switch and all accessory switches should be off.
  1. Idle the engine.

  1. Using the Techstream, read the value of Calculate Load in the Data List.

    Standard:

    Data List
    Specified Condition
    Calculate Load
    90 to 110% of the current value of the vehicle


NG
REPLACE MASS AIR FLOW METER (Click here)
OK


74.CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)


    A198845E08
  1. Disconnect the fuel injector assembly connectors.

  1. Turn the ignition switch to ON.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Cylinder
    Tester Connection
    Switch Condition
    Specified Condition
    No. 1
    H1-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 2
    F1-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 3
    H2-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 4
    F2-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 5
    H3-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 6
    F3-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 7
    H4-2 - Body ground
    Ignition switch ON
    11 to 14 V
    No. 8
    F4-2 - Body ground
    Ignition switch ON
    11 to 14 V

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. Make sure there is not an excessive amount of force applied to the wire harness.
    3. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)


NG
REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT (Click here)
OK


75.CHECK IGNITION SYSTEM
  1. Perform ignition system On-vehicle Inspection (Click here).



NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK


76.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.

  1. When performing the Active Test, check for an operating sound from the fuel pump.

    Standard:

    Control the Fuel Pump / Speed
    Specified Condition
    ON
    Operating sound heard
    OFF
    Operating sound not heard

    Result 
    Result
    Proceed to
    Abnormal
    A
    Normal
    B

    HINT:
    1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
    2. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
    3. If the fuel pump operating noise is abnormal, proceed to step 77.


B
Go to step 78
A


77.INSPECT FUEL PUMP
  1. Inspect the fuel pump (Click here).



NG
REPLACE FUEL PUMP (Click here)
OK

CHECK FUEL PUMP CONTROL CIRCUIT (Click here)  

78.CHECK FUEL SYSTEM
  1. Check the fuel system.

    1. Check the fuel pump operation.
    2. Check the fuel leaks.
    3. Check the fuel pressure.

HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).

Result 
Result
Proceed to
Abnormal
A
Normal
B


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A


79.CHECK FUEL SYSTEM
  1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.

    Result 
    Result
    Proceed to
    There is foreign matter or signs that fuel pump was stuck
    A
    There is no foreign matter and no signs that fuel pump was stuck
    B

    HINT:
    If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.


B
REPAIR OR REPLACE FUEL SYSTEM
A


80.CHECK FUEL SYSTEM
  1. Check the fuel system.

    1. Check the fuel pump operation.
    2. Check the fuel leaks.
    3. Check the fuel pressure.
    4. Perform the Active Test.

HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).


NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK

END 

81.CLEAR DTC
  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear the DTCs (Click here).


NEXT

END