Steering Pad Switch: Inspection

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

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.