Transmission Control Switch Circuit [09/2014 - ]: Procedure

1. Disconnect the O77 transmission floor shift assembly (transmission control switch) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Transmission Floor Shift Assembly (Transmission Control Switch))

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

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  COMPONENTS [09/2014 - ] 

Result: 

OK 

See step  2

1. Turn the engine switch on (IG).
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 Transmission Floor Shift Assembly (Transmission Control Switch))

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   O77-4 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O77-2 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - BATTERY, BODY GROUND) 

Result: 

OK 

See step  3

1. Connect the O77 transmission floor shift assembly (transmission control switch) connector.
2. Disconnect the A78 ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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
   A78-6 (S) - Body ground	Shift lever in M, "+" and "-"	11 to 14 V
   	Shift lever not in M, "+" and "-"	Below 1 V

5. Turn the engine switch off.
6. Disconnect the spiral cable with sensor sub-assembly connector.
7. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A78-29 (SFTU) - Body ground	Shift lever held in "+" (Up shift)	Below 1 Ω
   	Shift lever in M	10 kΩ or higher
   A78-28 (SFTD) - Body ground	Shift lever held in "-" (Down shift)	Below 1 Ω
   	Shift lever in M	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2014 - 03/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [03/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)