Steering Pad Switch: Inspection

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch assembly.

Fig 1: Identifying Steering Pad Switch And Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire side connector.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
10 (AU1) - 8 (EAU)	No switch is pushed	Approx. 100 kΩ
10 (AU1) - 8 (EAU)	SEEK* switch is pushed	Below 2.5 Ω
10 (AU1) - 8 (EAU)	SEEK-switch is pushed	Approx. 320 Ω
10 (AU1) - 8 (EAU)	VOL+ switch is pushed	Approx. 1 kΩ
10 (AU1) - 8 (EAU)	VOL- switch is pushed	Approx. 3.2 kΩ
9 (AU2) - 8 (EAU)	No switch is pushed	Approx. 100 kΩ
9 (AU2) - 8 (EAU)	MODE switch is pushed	Below 2.5 Ω
9 (AU2) - 8 (EAU)	VOICE switch is pushed	3,110 Ω
9 (AU2) - 8 (EAU)	ON HOOK switch is pushed	329 Ω
9 (AU2) - 8 (EAU)	OFF HOOK switch is pushed	1,000 Ω
3 (AC1) - 7 (EAC)	No switch is pushed	30 kΩ or higher
3 (AC1) - 7 (EAC)	INFO switch is pushed	3,062 Ω
2 (AC2) - 7 (EAC)	No switch is pushed	30 kΩ or higher
2 (AC2) - 7 (EAC)	MAP switch is pushed	3,062 Ω

If the resistance is not as specified, replace the steering pad switch assembly.