Steering Pad Switch Circuit

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): Steering Pad Switch Circuit
- Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch assembly to the radio receiver assembly.

If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly.

If there is a short in the circuit, the same condition as to when a switch is continuously depressed occurs. Therefore, the radio receiver assembly cannot be operated using the steering pad switch assembly, and also the radio receiver assembly itself cannot function.

WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution for the SRS Service Precautions.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE)

(a) Disconnect the F19 receiver connector.

(b) Disconnect the E12 cable connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT SPIRAL CABLE SUB-ASSEMBLY





Text in Illustration





(a) Disconnect the z35 cable connectors.

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

Standard Resistance:





CAUTION:
The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the Precaution for the SRS.

* Removal Removal.
* Installation Installation.
NG -- REPLACE SPIRAL CABLE SUB-ASSEMBLY Removal
OK -- Continue to next step.

3. INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Disconnect the z35 switch connector.





Text in Illustration





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

Standard Resistance:





NG -- REPLACE STEERING PAD SWITCH ASSEMBLY Removal

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures