POWER DOOR LOCK CONTROL SYSTEM > Rear Door UNLOCK Detection Switch LH Circuit

for Preparation Click here


DESCRIPTION

The rear door unlock detection switch LH is built into the rear door lock motor LH. The switch turns on when the rear door LH is unlocked and turns off when the door is locked. The main body ECU is connected to the rear door lock motor LH via terminal LSWL and rear door LH lock/unlock state signals are input to the ECU. The main body ECU applies voltage to the door unlock detection switch via terminal LSWL. When the door unlock detection switch is off (there is continuity between the switch terminals), a lock state signal is input to the ECU. When the switch is on (there is no continuity between the switch terminals), an unlock state signal is input.

WIRING DIAGRAM


E146244E01


INSPECTION PROCEDURE

1.READ VALUE USING TECHSTREAM (UNLOCK DETECTION SWITCH)
  1. Check the Data List to ensure proper functioning of the unlock detection switch.

    Main Body 
    Tester Display
    Measurement Item/Range
    Normal Condition
    Diagnostic Note
    RL-Door Lock Pos SW
    Rear door unlock detection switch LH signal / ON or OFF
    ON: Rear left door is unlocked
    OFF: Rear left door is locked
    -

    OK:
    The display is as specified in the normal condition column.


NG
Go to step 2
OK

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

2.INSPECT REAR DOOR LOCK MOTOR ASSEMBLY LH (UNLOCK DETECTION SWITCH)
E147086E01
  1. Remove the rear door lock motor LH.

    1. for Double Cab: (Click here)
    2. for CrewMax: (Click here)
  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    Switch Condition
    Specified Condition
    9 (E) - 6 (LSSR)
    Lock
    10 kΩ or higher
    Unlock
    Below 1 Ω
    Result 
    Result
    Proceed to
    OK
    A
    NG (for Double Cab)
    B
    NG (for CrewMax)
    C


B
REPLACE REAR DOOR LOCK MOTOR ASSEMBLY LH (Click here)

C
REPLACE REAR DOOR LOCK MOTOR ASSEMBLY LH (Click here)
A


3.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK MOTOR LH - MAIN BODY ECU AND BODY GROUND)
E146546E01
  1. Disconnect the O10 door lock connector.

  1. Disconnect the DC ECU connector.

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

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    O10-6 (LSSR) - DC-1 (LSWL)
    Always
    Below 1 Ω
    O10-6 (LSSR) - Body ground
    Always
    10 kΩ or higher
    O10-9 (E) - Body ground
    Always
    Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU