Steering Pad Switch Circuit

NAVIGATION: NAVIGATION SYSTEM (for HDD): Steering Pad Switch Circuit
- Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch assembly to the display and navigation module display.

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

If there is a short in the circuit, the resulting condition is the same as to if the switch were continuously pressed. Therefore, the display and navigation module display cannot be operated using the steering pad switch assembly, and the display and navigation module display itself cannot function.

WIRING DIAGRAM





INSEPCTION PROCEDURE

NOTICE:
The vehicle is equipped with a Supplemental Restraint System (SRS). Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System Service Precautions.

PROCEDURE

1. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY

(a) Disconnect the D24 display and navigation module display connector.





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

Standard Resistance:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE - SPIRAL CABLE)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE - SPIRAL CABLE)

(a) Disconnect the D24 display and navigation module display connector.

(b) Disconnect the C13 spiral with sensor cable sub-assembly 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.

3. INSPECT CRUISE CONTROL MAIN SWITCH ASSEMBLY

(a) Disconnect the cruise control main switch assembly connectors.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY Service and Repair
OK -- Continue to next step.

4. INSPECT SPIRAL CABLE SUB-ASSEMBLY

(a) Disconnect the cruise control main switch assembly connector.





(b) Disconnect the C13 display and navigation module display connector.

(c) 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 cable may prevent the airbag from deploying. Refer to the pages shown in the brackets.

HINT
* Removal Service and Repair
* Installation Service and Repair

Text in Illustration





NG -- REPLACE SPIRAL CABLE SUB-ASSEMBLY Service and Repair

OK -- REPLACE STEERING PAD SWITCH ASSEMBLY Removal