ELECTRONIC SHIFT LEVER SYSTEM "P" Position Switch Indicator Light Circuit

DESCRIPTION

The indicator light comes on when the P position switch (transmission shift main switch) is pressed (park (P) selected), goes off when a shift state other than park (P) is selected and goes off when a system malfunction occurs. Then an error message is displayed on the multi-information display.

WIRING DIAGRAM

A003XODE09

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK P POSITION SWITCH (INDICATOR LIGHT)


    1. Turn the power switch on (IG).

    2. Depress the brake pedal and move the shift lever to select neutral (N).

    3. Inspect the indicator light condition by operating the P position switch (transmission shift main switch).

      Result
      Condition of Indicator Light Proceed to
      Indicator light does not go off. (Remains on) A
      Indicator light does not come on. B

    4. Turn the power switch off.


    B

    CHECK HARNESS AND CONNECTOR (P POSITION SWITCH POWER SOURCE CIRCUIT) Click here

    A

  2. CHECK P POSITION SWITCH (INDICATOR LIGHT)


    1. Disconnect connector A21 from the transmission control ECU assembly.

    2. Turn the power switch on (IG).

    3. Inspect the indicator light condition by operating the P position switch (transmission shift main switch).

      Result
      Condition of Indicator Light Proceed to
      Indicator light does not go off. (Remains on) A
      Indicator light goes off. B

      Note

      Turning the power switch on (IG) with the transmission control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. Turn the power switch off.

    5. Connect the transmission control ECU assembly connector.


    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    A

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - P POSITION SWITCH)


    1. Disconnect connector A21 from the transmission control ECU assembly.

    2. Disconnect connector H81 from the P position switch (transmission shift main switch).

    3. A003VEIE07
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A21-20 (IND) or H81-7 (IND-) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Connect the P position switch (transmission shift main switch) connector.

    5. Connect the transmission control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE P POSITION SWITCH

  4. CHECK HARNESS AND CONNECTOR (P POSITION SWITCH POWER SOURCE CIRCUIT)


    1. Disconnect the connector from the P position switch (transmission shift main switch).

    2. A003YR9E12
      Text in Illustration
      *a

      Front view of wire harness connector

      (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H81-6 (IND+) - Body ground Power switch off 9 to 14 V

    3. Connect the P position switch (transmission shift main switch) connector.


    NG

    CHECK AND REPAIR POWER SOURCE CIRCUIT

    OK

  5. INSPECT P POSITION SWITCH


    1. Disconnect the connector from the P position switch (transmission shift main switch).

    2. A003W9UE13
      Text in Illustration
      *a

      Component without harness connected

      (P Position Switch (Transmission Shift Main Switch))

      Apply auxiliary battery voltage between terminals H81-6 (IND+) and H81-7 (IND-) and check the indicator light.

      Result
      Condition Specified Condition
      Auxiliary battery voltage applied between terminals H81-6 (IND+) and H81-7 (IND-) Comes on

      Tech Tips

      Terminals No. 1 and No. 8 on the component side connector are empty.

    3. Connect the P position switch (transmission shift main switch) connector.


    NG

    REPLACE P POSITION SWITCH

    OK

  6. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - P POSITION SWITCH)


    1. Disconnect connector A21 from the transmission control ECU assembly.

    2. Disconnect the connector from the P position switch (transmission shift main switch).

    3. A003VEIE08
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to P Position Switch (Transmission Shift Main Switch))

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A21-20 (IND) - H81-7 (IND-) Power switch off Below 1 Ω

    4. Connect the P position switch (transmission shift main switch) connector.

    5. Connect the transmission control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here