Inspection Procedure

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

NOTE: The vehicle is equipped with an SRS (Supplemental Restraint System) such as the airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (See PRECAUTION ).

INSPECT RADIO AND NAVIGATION ASSEMBLY

Disconnect the radio and navigation assembly connector F10.

Fig 1: Identifying F10 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the resistance according to the value(s) in the table below.

Standard resistance

RADIO AND NAVIGATION ASSEMBLY

Tester connection	Condition	Specified condition
SW1 - SWG	No switch Is pushed	Approx. 100 kΩ
SW1 - SWG	SEEK+ switch: push	0 to 2.5 Ω
SW1 - SWG	SEEK-switch: push	Approx. 0.3 kΩ
SW1 - SWG	VOL* switch: push	Approx. 1 kΩ
3W1 - SWG	VOL- switch: push	Approx. 3.1 kΩ
SW2 - SWG	No switch Is pushed	Approx. 100 kΩ
SW2 - SWG	MODE switch: push	0 to 2.5 Ω
SW2 - SWG	VOICE switch: push	Approx. 3.1 kΩ
SW2 - SWG	ON HOOK switch: push	Approx. 0.3 kΩ
SW2 - SWG	OFF HOOK switch: push	Approx. 1 kΩ

NG: Go to step 2

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch assembly connector a1.

Fig 2: Identifying Steering Pad Switch Assembly Connector Terminal (3 Spoke And 4 Spoke Type)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the resistance according to the value(s) in the table below.

STEERING PAD SWITCH ASSEMBLY

Tester connection	Condition	Specified condition
AU1 - EAU	No switch is pushed	Approx. 100 kΩ
AU1 - EAU	SEEK+ switch: push	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	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

NG: REPLACE STEERING PAD SWITCH ASSEMBLY

OK: Go to Next Step

INSPECT SPIRAL CABLE

Disconnect the steering pad switch assembly and spiral cable connectors.

Fig 3: Identifying Spiral Cable And Spiral Cable Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the resistance according to the value(s) in the table below.

Standard resistance

SPIRAL CABLE

Tester connection	Spiral cable position	Specified condition
EAU - EAU	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right
AU1 - AU1	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right
AU2-AU2	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right

NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the air-bag from deploying.

HINT:

Spiral Cable (See REMOVAL )
Spiral Cable (See INSTALLATION )

NG: REPLACE SPIRAL CABLE

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - RADIO AND NAVIGATION ASSEMBLY)