Shift Paddle Switch Circuit: Procedure

1. Disconnect the ECM connector.
   Fig 1: Checking Harness And Connector (Shift Paddle Switch Circuit)

   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- 50 (SFTD) - Body ground	Pull "-" continuously (Down-shift)	Below 1 Ω
   	Release	10 kΩ or higher
   A25-34 (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   2 

OK → See step   10 

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.
   Fig 2: Checking Harness And Connector (Spiral Cable - Body Ground)

   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
   A25-50 (SFTD) - I28-7 (SDN)	Always	Below 1 Ω
   A25-50 (SFTD) or I28-7 (SDN) - Body ground	Always	10 kΩ or higher
   A25-34 (SFTU) - I28-14 (SUP)	Always	Below 1 Ω
   A25-34 (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.
   Fig 3: Checking Harness And Connector (Spiral Cable - Shift Paddle Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.

   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   6 

OK: Go to next step 

1. Disconnect the steering pad switch connector from the spiral cable sub-assembly.
   Fig 4: Measuring Resistance Of 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   8 

OK → See step   12 

1. Disconnect the connector from the transmission shift switch LH and RH.
   Fig 5: Measuring Resistance Of Transmission Shift Switch Assembly (Shift Paddle Switch)

   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   9 

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.
   Fig 6: Checking No. 1 Switch Wire Resistance

   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   11 

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