LIGHTING SYSTEM(except 5L-E) Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the door courtesy light switch assembly.

WIRING DIAGRAM

B001DL2E01

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here

      Main Body
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      FR Door Courtesy Front door courtesy light switch assembly RH signal / OFF or ON

      OFF: Front door RH closed

      ON: Front door RH open

      		 -
      FL Door Courtesy Front door courtesy light switch assembly LH signal / OFF or ON

      OFF: Front door LH closed

      ON: Front door LH open

      		 -
      RR Door Courtesy SW Rear door courtesy light switch assembly RH signal / OFF or ON

      OFF: Rear door RH closed

      ON: Rear door RH open

      		 for 5 Door
      RL Door Courtesy SW Rear door courtesy light switch assembly LH signal / OFF or ON

      OFF: Rear door LH closed

      ON: Rear door LH open

      		 for 5 Door
      OK
      Normal condition listed above are displayed.
      Result
      Result Proceed to
      OK A
      NG ("FR Door Courtesy" is abnomality) B
      NG ("FL Door Courtesy" is abnomality) C
      NG ("RR Door Courtesy SW" is abnomality) (for 5 Door) D
      NG ("RL Door Courtesy SW" is abnomality) (for 5 Door) E

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    D

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    E

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    B

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Remove the front door courtesy light switch assembly RH.

      Click here

    2. Inspect the front door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH)


    1. Disconnect the G218 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the Q8 front door courtesy light switch assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G218-27 (FRCY) - Q8-1 Always Below 1 Ω
      G218-27 (FRCY) or Q8-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Remove the front door courtesy light switch assembly LH.

      Click here

    2. Inspect the front door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH)


    1. Disconnect the G218 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the R7 front door courtesy light switch assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G218-6 (FLCY) - R7-1 Always Below 1 Ω
      G218-6 (FLCY) or R7-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Remove the rear door courtesy light switch assembly RH.

      Click here

    2. Inspect the rear door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH)


    1. Disconnect the 2N*1 or 2P*2 driver side junction block assembly connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the Q9 rear door courtesy light switch assembly RH connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2N-30 - Q9-1 Always Below 1 Ω
      2N-30 or Q9-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      2P-23 - Q9-1 Always Below 1 Ω
      2P-23 or Q9-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Remove the driver side junction block assembly.

      Click here

      B001CL3C01
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Driver Side Junction Block Assembly)

      		 - -

    2. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

      Click here

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2N-30 - A-2 (RCTY) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      2P-23 - A-2 (RCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

  9. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Remove the rear door courtesy light switch assembly LH.

      Click here

    2. Inspect the rear door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH)


    1. Disconnect the 2Q*1 or 2O*2 driver side junction block assembly connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the R8 rear door courtesy light switch assembly LH connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2Q-33 - R8-1 Always Below 1 Ω
      2Q-33 or R8-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      2O-15 - R8-1 Always Below 1 Ω
      2O-15 or R8-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Remove the driver side junction block assembly.

      Click here

      B001ILQC01
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Driver Side Junction Block Assembly)

      		 - -

    2. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

      Click here

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2Q-33 - A-13 (LCTY) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      2O-15 - A-13 (LCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here