Steering Pad Switch: Inspection

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEERING PAD SWITCH

Disconnect the steering pad switch connector.

Fig 1: Inspecting Steering Pad Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the values in the table below.

Standard resistance

RESISTANCE SPECIFICATION

Tester connection	Condition	Specified condition
AU1 - EAU	No switch is pushed	Approx. 100 kΩ
AU1 - EAU	SEEK+ switch: push	Approx. 0 to 2.5 Ω
AU1 - EAU	SEEK- switch: push	Approx. 0.3 kΩ
AU1 - EAU	VOL+ switch: push	Approx. 1 kΩ
AU1 - EAU	VOL- switch: push	Approx. 3.1 kΩ
AU2 - EAU	No switch is pushed	Approx. 100 kΩ
AU2 - EAU	MODE switch: push	Approx. 0 to 2.5 Ω
AU2 - EAU	VOICE switch: push	Approx. 3.1 kΩ
AU2 - EAU	ON HOOK switch: push	Approx. 0.3 kΩ
AU2 - EAU	OFF HOOK switch: push	Approx. 1 kΩ

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