LIGHTING SYSTEM Back-up Light Circuit

DESCRIPTION

The illumination of the back-up lights is controlled by release signals sent to the No. 3 semiconductor power integration ECU from the shift control ECU.

WIRING DIAGRAM

B004XMKE01

CAUTION / NOTICE / HINT

Note


  • First, confirm that there is no malfunction in the power integration system. Refer to the How to Proceed with Troubleshooting procedure.

    Click here

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notice before proceeding with work.

    Click here

PROCEDURE


  1. READ VALUE USING GTS


    1. Turn the power switch on (READY).

    2. Changes the shift lever R position.

    3. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Status of Back-up Light Fuse Back-up light fuse Connect or Disconnect

      Connect: Fuse not shut off

      Disconnect: Fuse shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Status of Back-up Light Fuse
      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    NG

    CHECK REAR LIGHT LENS AND BODY LH Click here

    OK

  2. READ VALUE USING GTS


    1. Turn the power switch on (READY).

    2. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Back-up Light Input Signal Back-up light input condition OFF or ON

      OFF: Shift lever in any position other than R

      ON: Shift lever in R

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Back-up Light Input Signal
      OK
      Display changes according to shift lever operation.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK SHIFT CONTROL ECU Click here

    OK

  3. READ VALUE USING GTS


    1. Turn the power switch on (READY).

    2. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Back-up Light Output Signal Back-up light output condition OFF or ON

      OFF: Back-up light not illuminated

      ON: Back-up light illuminated

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Back-up Light Output Signal
      OK
      Display changes according to shift lever operation.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR LIGHT LENS AND BODY LH - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the L86 rear light lens and body LH connector.

    2. Disconnect the cable from the negative (-) auxiliary battery terminal.

    3. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L86-5 (B) - L111-4 (L) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK SHIFT CONTROL ECU


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L111-11 (+S) - Body ground Power switch on (READY), shift lever R position 7.25 to 14.65 V
      Power switch on (READY), shift lever except R position Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    NG

  6. CHECK HARNESS AND CONNECTOR (NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU - SHIFT CONTROL ECU)


    1. Disconnect the G81 shift control ECU connector.

    2. Disconnect the cable from the negative (-) auxiliary battery terminal.

    3. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L111-11 (+S) - G81-15 (BL) Always Below 1 Ω
      L111-11 (+S) or G81-15 (BL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SHIFT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK REAR LIGHT LENS AND BODY LH


    1. Disconnect the L86 rear light lens and body LH connector.

    2. Turn the power switch on (READY).

    3. Changes the shift lever except R position.

    4. Changes the shift lever R position.

    5. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Status of Back-up Light Fuse Back-up light fuse Connect or Disconnect

      Connect: Fuse not shut off

      Disconnect: Fuse shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Status of Back-up Light Fuse
      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT LENS AND BODY LH Click here

    NG

  8. CHECK REAR LIGHT LENS AND BODY RH


    1. Disconnect the L90 rear light lens and body RH connector.

    2. Turn the power switch on (READY).

    3. Changes the shift lever except R position.

    4. Changes the shift lever R position.

    5. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Status of Back-up Light Fuse Back-up light fuse Connect or Disconnect

      Connect: Fuse not shut off

      Disconnect: Fuse shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Status of Back-up Light Fuse
      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT LENS AND BODY RH Click here

    NG

  9. CHECK PARKING ASSIST ECU


    1. Disconnect the G96 parking assist ECU connector.

    2. Turn the power switch on (READY).

    3. Changes the shift lever except R position.

    4. Changes the shift lever R position.

    5. Using the GTS, read the Data List.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Status of Back-up Light Fuse Back-up light fuse Connect or Disconnect

      Connect: Fuse not shut off

      Disconnect: Fuse shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Status of Back-up Light Fuse
      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

  10. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT CIRCUIT)


    1. Disconnect the L86 rear light lens and body LH connector.

    2. Disconnect the L90 rear light lens and body RH connector.

    3. Disconnect the G96 parking assist ECU connector.

    4. Disconnect the cable from the negative (-) auxiliary battery terminal.

    5. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L86-5 (B) or L111-4 (L) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR