Steering Pad Switch Circuit

NAVIGATION: NAVIGATION 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 or navigation system cannot be operated using the steering pad switch.
If there is a short in the circuit, the resulting condition is the same as if the switch were continuously depressed. Therefore, the radio receiver or multi-display cannot be operated using the steering pad switch, and the radio receiver or multi-display itself cannot function.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE:
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 precautionary notice for the Supplemental Restraint System Service Precautions.

PROCEDURE

1. INSPECT RADIO RECEIVER




(a) Disconnect the radio receiver connector E70.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- INSPECT STEERING PAD SWITCH ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT STEERING PAD SWITCH ASSEMBLY
(a) Disconnect the steering pad switch assembly connector d1.




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






NG -- REPLACE STEERING PAD SWITCH ASSEMBLY
OK -- Continue to next step.
3. INSPECT SPIRAL CABLE




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





NOTE:
The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may cause airbag deployment. Be sure to read the page shown in the brackets.
HINT:
- Removal Removal
- Installation Installation

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