Transmission Control Switch Circuit [10/2015 - ]: Procedure

1. Disconnect the transmission control switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D31-4 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Transmission Control Switch)

Result: 

NG 

CHECK POWER SOURCE CIRCUIT 

Result: 

OK 

See step  2

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D31-2 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Transmission Control Switch)

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Measure the resistance between each terminal of the transmission control switch when the shift lever is moved to each position.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D31-4 (IG) - D31-5 (S)	Shift lever in S, "+" or "-"	Below 1 Ω
   	Shift lever not in S, "+" or "-"	10 kΩ or higher
   D31-3 (SFTU) - D31-2 (E)	Shift lever held in "+" (Up-shift)	Below 1 Ω
   	Shift lever not held in "+"	10 kΩ or higher
   D31-1 (SFTD) - D31-2 (E)	Shift lever held in "-" (Down-shift)	Below 1 Ω
   	Shift lever not held in "-"	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Transmission Control Switch)

Result: 

NG 

REPLACE LOWER SHIFT LEVER ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  COMPONENTS [10/2014 - ] 

Result: 

OK 

See step  4

1. Connect the transmission control switch connector.
2. Disconnect the ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

3. Turn the engine switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A18-37 (S) - Body ground	Engine switch on (IG) Shift lever in S, "+" or "-"	11 to 14 V
   A18-37 (S) - Body ground	Engine switch on (IG) Shift lever not in S, "+" or "-"	Below 1 V

5. Turn the engine switch off.
6. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A18-34 (SFTU) - Body ground	Shift lever held in "+" (Up-shift)	Below 1 Ω
   	Shift lever not held in "+"	10 kΩ or higher
   A18-50 (SFTD) - Body ground	Shift lever held in "-" (Down-shift)	Below 1 Ω
   	Shift lever not held in "-"	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to ECM)

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR