Steering Pad Switch Circuit

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Steering Pad Switch Circuit

Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch to the radio receiver.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch.
If there is a short in the circuit, the same condition as to when a switch is continuously depressed occurs.
Therefore, the radio receiver cannot be operated using the steering pad switch, and also the radio receiver itself cannot function.

WIRING DIAGRAM





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

PROCEDURE

1. INSPECT RADIO RECEIVER




(a) Disconnect the radio receiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





- *2: for 6 speakers
- *3: for 13 Speakers

NG -- INSPECT STEERING PAD SWITCH
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT STEERING PAD SWITCH
(a) Disconnect the steering pad switch connector.
(b) Measure the resistance according to the values in the table below.





Standard Resistance:





Text in Illustration





- *10: for 13 Speakers

NG -- REPLACE STEERING PAD SWITCH ASSEMBLY
OK -- Continue to next step.

3. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY




(a) Disconnect the steering pad switch and spiral with sensor cable sub-assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





NOTICE: The spiral with sensor cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral with sensor cable sub-assembly may prevent the airbag from deploying.

HINT:
- Removal Removal
- Installation Installation

Text in Illustration





NG -- REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - RADIO RECEIVER)