Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Avalon. 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). Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (See PRECAUTION ).

INSPECT RADIO RECEIVER

Disconnect the radio receiver connector E15.

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
2CH - GND	No switch is pushed	Approx. 100 kΩ
2CH - GND	VOICE switch: push	Approx. 3.2 kΩ

NG: Go to step 2

Fig 1: Disconnecting Radio Receiver Connector E15

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch assembly connector A.

Fig 2: Inspecting Steering Pad Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
AU2 - EAU	No switch is pushed	Approx. 100 kΩ
AU2 - EAU	VOICE switch: push	Approx. 3.2 kΩ

NG: REPLACE STEERING PAD SWITCH ASSEMBLY

OK: Go to Next Step

INSPECT SPIRAL CABLE

Disconnect the spiral cable connectors.

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
EAU - EAU	Always	Below 1 Ω
AU2 - AU2	Always	Below 1 Ω

NG: REPLACE SPIRAL CABLE

Fig 3: Inspecting Spiral Cable

OK : REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)