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

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List.
5. In accordance with the display on the Techstream, read the Data List.

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Sports Shift Up SW	Sport shift up switch status/ ON or OFF	ON: Continuously shift to "+" (up-shift) OFF: Release "+" (up-shift)	-
   Sports Shift Down SW	Sport shift down switch status/ ON or OFF	ON: Continuously shift to "-" (down-shift) OFF: Release "-" (down-shift)	-

   Result

   Result	Proceed to
   Data display is not within Normal Condition range	A
   Data display is within Normal Condition range	B

B → See step   8 

A: Go to next step 

1. Disconnect the transmission control switch connector from lower shift lever assembly.

   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
   l44-4 (IG) - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

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

NG → CHECK POWER SOURCE CIRCUIT 

OK: Go to next step 

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
   l44-2 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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
   l44-4 (IG) - l44-5 (S)	Shift lever in S, "+" or "-"	Below 1 Ω
   	Shift lever not in S, "+" or "-"	10 kΩ or higher
   l44-3 (SFTU) - l44-2 (E)	Shift lever held in "+" (Up-shift)	Below 1 Ω
   	Shift lever not held in "+"	10 kΩ or higher
   l44-1 (SFTD) - l44-2 (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)

NG → See step   7 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

3. Turn the ignition switch to ON.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A25-27 (S) - Body ground	Ignition switch ON Shift lever in S, "+" or "-"	11 to 14 V
   A25-27 (S) - Body ground	Ignition switch ON Shift lever not in S, "+" or "-"	Below 1 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A25-42 (SFTU) - Body ground	Shift lever held in "+" (Up-shift)	Below 1 Ω
   	Shift lever not held in "+"	10 kΩ or higher
   A25-43 (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

   Result	Proceed to
   OK	A
   NG	B

B → REPAIR OR REPLACE HARNESS OR CONNECTOR 

A → See step   6