Shift Paddle Switch Circuit [08/2015 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH CIRCUIT)

Disconnect the ECM connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BODY GROUND)

Disconnect the negative (-) terminal cable from the battery.
Wait for at least 90 seconds.
Remove the steering wheel assembly.
Remove the steering column cover.

Disconnect the spiral cable connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM)

Disconnect the ECM connector.

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

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - SHIFT PADDLE SWITCH)

Remove the horn button assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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
z3-6 (SUP) - z3-7 (ECC)	Release	10 kΩ or higher
z3-12 (SDN) - z3-7 (ECC)	Pull "-" continuously (Down-shift)	Below 1 Ω
z3-12 (SDN) - z3-7 (ECC)	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

INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH)

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

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
C-3 (ECC) - C-2 (SFTD)	Release	10 kΩ or higher
C-4 (ECC1) - C-2 (SFTD)	Pull "-" continuously (Down-shift)	Below 1 Ω
C-4 (ECC1) - C-2 (SFTD)	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
B-3 (SFTU) - B-2 (ECC1)	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

INSPECT NO. 1 SWITCH WIRE

Connect the transmission shift switch LH and RH connector.

Disconnect the No. 1 switch wire from steering pad switch connector.

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

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY. Refer to COMPONENTS [08/2015 - ]
REPLACE TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH). Refer to COMPONENTS [08/2015 - ]
GO TO TRANSMISSION CONTROL SWITCH CIRCUIT. Refer to Transmission Control Switch Circuit [08/2015 - ]
REPLACE NO. 1 SWITCH WIRE. Refer to COMPONENTS [08/2015 - ]
CHECK FOR INTERMITTENT PROBLEMS. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [08/2015 - ]