Shift Paddle 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 pull to "+" (up-shift) OFF: Release "+" (up-shift)	-
   Sports Shift Down SW	Sport shift down switch status/ ON or OFF	ON: Continuously pull 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   13 

A: Go to next step 

1. Disconnect the ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A25- 43 (SFTD) - Body ground	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher
   A25-42 (SFTU) - Body ground	Pull "+" continuously (Up-shift)	Below 1 Ω
   	Release	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   3 

OK → See step   11 

1. Disconnect the negative (-) terminal cable from the battery.
2. Wait for at least 90 seconds.
3. Remove the steering wheel assembly.
4. Remove the steering column cover.
5. Disconnect the spiral cable connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I28-2 (ECC) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Spiral Cable Sub-assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A25-43 (SFTD) - I28-7 (SDN)	Always	Below 1 Ω
   A25-43 (SFTD) or I28-7 (SDN) - Body ground	Always	10 kΩ or higher
   A25-42 (SFTU) - I28-14 (SUP)	Always	Below 1 Ω
   A25-42 (SFTU) or I28-14 (SUP) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the horn button assembly.
2. Disconnect the steering pad switch connector from the spiral cable sub-assembly.
3. Measure the resistance according to the value(s) in the table below when the shift paddle switch is moved to each position.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   z3-6 (SUP) - z3-7 (ECC)	Pull "+" continuously (Up-shift)	Below 1 Ω
   	Release	10 kΩ or higher
   z3-12 (SDN) - z3-7 (ECC)	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Spiral Cable Sub-assembly)

NG → See step   7 

OK: Go to next step 

1. Disconnect the steering pad switch connector from the spiral cable sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z3-7 (ECC) - I28-2 (ECC)	Always	Below 3 Ω
   z3-6 (SUP) - I28-14 (SUP)	Always	Below 3 Ω
   z3-12 (SDN) - I28-7 (SDN)	Always	Below 3 Ω
   z3-7 (ECC) or I28-2 (ECC) - All other terminals	Always	10 kΩ or higher
   z3-6 (SUP) or I28-14 (SUP) - All other terminals	Always	10 kΩ or higher
   z3-12 (SDN) or I28-7 (SDN) - All other terminals	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Spiral Cable Sub-assembly)
   *b	Steering Pad Switch Side
   *c	Vehicle Side

NG → See step   9 

OK → See step   13 

1. Disconnect the connector from the transmission shift switch LH and RH.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   TRANSMISSION SHIFT SWITCH LH:
   
   

   Tester Connection	Switch Condition	Specified Condition
   C-3 (ECC) - C-2 (SFTD)	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher
   C-4 (ECC1) - C-2 (SFTD)	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher

   TRANSMISSION SHIFT SWITCH RH:
   
   

   Tester Connection	Switch Condition	Specified Condition
   B-3 (SFTU) - B-2 (ECC1)	Pull "+" continuously (Up-shift)	Below 1 Ω
   	Release	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Shift paddle switch LH)
   *b	Component without harness connected (Shift paddle switch RH)

NG → See step   10 

OK: Go to next step 

1. Connect the transmission shift switch LH and RH connector.
2. Disconnect the No. 1 switch wire from steering pad switch connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A-3 (SFTD) - A-7 (ECC)	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher
   A-2 (SFTU) - A-7 (ECC)	Pull "+" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Steering Pad Switch Connector)

NG → See step   12 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 SWITCH WIRE - SPIRAL CABLE SUB-ASSEMBLY)