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

for Preparation Click here


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


C209919E09


INSPECTION PROCEDURE

1.CHECK P POSITION SWITCH (INDICATOR LIGHT)

  1. Turn the power switch on (IG).

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

  1. 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

  1. Turn the power switch off.



B
Go to step 4
A


2.CHECK P POSITION SWITCH (INDICATOR LIGHT)

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

  1. Turn the power switch on (IG).

  1. 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

    NOTICE:
    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.

  1. Turn the power switch off.

  1. 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.

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



    C210349E07

  1. 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

    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))

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

  1. 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).



    C208992E12

  1. 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

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to P Position Switch (Transmission Shift Main Switch))

  1. 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).



    A216509E13

  1. 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

    Text in Illustration 
    *a
    		Component without harness connected
    (P Position Switch (Transmission Shift Main Switch))

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

  1. 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.

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



    C210349E08

  1. 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

    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))

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

  1. Connect the transmission control ECU assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TRANSMISSION CONTROL ECU ASSEMBLY (Click here)