"P" Position Switch Indicator Light Circuit [06/2015 - ]: Procedure

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 (integration control and panel assembly).

   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.

Result: 

B 

See step  4

Result: 

A 

See step  2

1. Disconnect the A25 transmission control ECU assembly connector.
2. Turn the power switch on (IG).
3. Inspect the indicator light condition by operating the P position switch (integration control and panel assembly).

   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. Reconnect the A25 transmission control ECU assembly connector.

Result: 

B 

REPLACE TRANSMISSION CONTROL ECU ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

Result: 

A 

See step  3

1. Disconnect the transmission control ECU assembly connector.
2. Disconnect the P position switch (integration control and panel assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Transmission Control ECU Assembly)
   *b	Front view of wire harness connector (to P Position Switch (Integration Control and Panel Assembly))

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A25-20 (IND) or G1-7 (IND-) - Body ground and other terminals	Power switch off	10 kΩ or higher

4. Reconnect the P position switch (integration control and panel assembly) connector.
5. Reconnect the transmission control ECU assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE P POSITION SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY). Refer to  REMOVAL [06/2015 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the P position switch (integration control and panel assembly) connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to P Position Switch (Integration Control and Panel Assembly))

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   G1-6 (IND+) - Body ground	Power switch off	9 to 14 V

3. Reconnect the P position switch (integration control and panel assembly) connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHECK AND REPAIR POWER SOURCE CIRCUIT 

Result: 

OK 

See step  5

1. Disconnect the G1 P position switch (integration control and panel assembly) connector.
2. Apply auxiliary battery voltage between terminals 6 (IND+) and 7 (IND-), and check the indicator light.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (P Position Switch (Integration Control and Panel Assembly))

   Result

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

   HINT: 

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

3. Reconnect the G1 P position switch (integration control and panel assembly) connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE P POSITION SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY). Refer to  REMOVAL [06/2015 - ] 

Result: 

OK 

See step  6

1. Disconnect the transmission control ECU assembly connector.
2. Disconnect the P position switch (integration control and panel assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Transmission Control ECU Assembly)
   *b	Front view of wire harness connector (to P Position Switch (Integration Control and Panel Assembly))

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A25-20 (IND) - G1-7 (IND-)	Power switch off	Below 1 Ω

4. Reconnect the P position switch (integration control and panel assembly) connector.
5. Reconnect the transmission control ECU assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE TRANSMISSION CONTROL ECU ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR