DTC    B1424/24    Solar Sensor Circuit (Driver Side)

for Preparation Click here


DESCRIPTION

The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning in AUTO mode. The output current from the solar sensor varies according to the amount of sunlight. When the sunlight increases, the output current increases. As the sunlight decreases, the output current decreases. The air conditioning amplifier detects output current from the solar sensor.
E132508E01

DTC Code
DTC Detection Condition
Trouble Area
B1424/24
Open or short in driver side solar sensor circuit
  1. Automatic light control sensor (solar sensor)
  2. Harness and connector between solar sensor and air conditioning amplifier
  3. Harness and connector between solar sensor and main body ECU
  4. Main body ECU
  5. Air conditioning amplifier

WIRING DIAGRAM


E147579E02


INSPECTION PROCEDURE

HINT:
If DTC B1244 is output at the same time, troubleshoot DTC B1244 first (Click here).
1.READ VALUE USING TECHSTREAM (SOLAR SENSOR (for Driver Side))

  1. Use the Data List to check if the driver side solar sensor is functioning properly.

    Air Conditioner 
    Tester Display
    		Measurement Item / Range
    		Normal Condition
    		Diagnostic Note
    Solar Sensor (D Side)
    		Driver side solar sensor /
    Min.: 0
    Max.: 255
    		Driver side solar sensor voltage increases as brightness increases
    		Open in circuit: 0
    Short in circuit: 255

    OK:
    The display is as specified in the normal condition.
    Result 
    Result
    		Proceed to
    NG
    		A
    OK (Checking from the PROBLEM SYMPTOMS TABLE)
    		B
    OK (Checking from the DTC)
    		C


B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

C
REPLACE AIR CONDITIONING AMPLIFIER (Click here)
A


2.CHECK HARNESS AND CONNECTOR (SOLAR SENSOR)
E107010E12

  1. Disconnect the K19 solar sensor connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    K19-3 (CLTE) - Body ground
    		Always
    		Below 1 Ω

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

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    K19-6 (CLTB) - K19-3 (CLTE)
    		Ignition switch ON
    		11 to 14 V
    Ignition switch OFF
    		Below 1 V


NG
Go to step 5
OK


3.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - SOLAR SENSOR)
E146408E02

  1. Disconnect the J19 air conditioning amplifier connector.

  1. Disconnect the K19 solar sensor connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J19-33 (TSD) - K19-1 (TSL)
    		Always
    		Below 1 Ω
    J19-33 (TSD) or K19-1 (TSL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR (TSL - CLTE VOLTAGE))
E108193E12

  1. Remove the solar sensor with its connector still connected (Click here).

  1. Apply battery voltage between terminals 6 (CLTB) and 3 (CLTE) of the solar sensor.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    1 (TSL) - 3 (CLTE)
    		Sensor is subjected to electric light
    		0.8 to 4.3 V
    Sensor is covered with a cloth
    		Below 0.8 V

    HINT:
    1. As the inspection light is moved away from the sensor, the voltage decreases.
    2. Use an incandescent light for inspection. Bring it about 30 cm (11.8 in.) from the solar sensor.


NG
REPLACE AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR) (Click here)
OK

REPLACE AIR CONDITIONING AMPLIFIER (Click here)  

5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SOLAR SENSOR AND BODY GROUND)
E146407E02

  1. Disconnect the J3 ECU connector.

  1. Disconnect the K19 solar sensor connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J3-18 (CLTE) - K19-3 (CLTE)
    		Always
    		Below 1 Ω
    J3-20 (CLTB) - K19-6 (CLTB)
    J3-18 (CLTE) or K19-3 (CLTE) - Body ground
    		Always
    		10 kΩ or higher
    J3-20 (CLTB) or K19-6 (CLTB) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU