POWER DOOR LOCK CONTROL SYSTEM Only Rear Door LH LOCK / UNLOCK Functions do not Operate

DESCRIPTION

The main body ECU (instrument panel junction block) receives lock/unlock switch signals and activates the door lock motor according to these signals.

WIRING DIAGRAM

A017FO4E03

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT REAR DOOR LOCK ASSEMBLY


    1. A017CFGE01

      Remove the rear door lock assembly LH Click here.

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

      Standard resistance
      Tester Connection Measurement Condition Door Lock Condition Specified Condition
      6 - 9

      Battery positive (+) → Terminal 4

      Battery negative (-) → Terminal 1

      		 Locked 10 kΩ or higher
      6 - 9

      Battery positive (+) → Terminal 1

      Battery negative (-) → Terminal 4

      		 Unlocked Below 1 Ω

    NG

    REPLACE REAR DOOR LOCK ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK MOTOR CIRCUIT)


    1. A017BLDE01

      Disconnect the instrument panel junction block connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      K4-1 (UL) - 1P-6 Always Below 1 Ω
      K4-4 (L) - 1P-11 Always Below 1 Ω
      K4-1 (UL) - Body ground Always 10 kΩ or higher
      K4-4 (L) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (DOOR UNLOCK DETECTION SWITCH CIRCUIT)


    1. A017BLDE02

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

      Standard resistance
      Tester Connection Condition Specified Condition
      K4-6 (LSSR) - 1P-5 Always Below 1 Ω
      K4-6 (LSSR) - Body ground Always 10 kΩ or higher
      K4-9 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)