Steering Pad Switch Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: Steering Pad Switch Circuit
- Steering Pad Switch Circuit

DESCRIPTION

The AUTO, OFF, TEMP UP (+), TEMP DOWN (-) switches are located on the steering pad switch assembly. The resistance of the steering pad switch assembly changes in accordance with switch operation. The A/C control assembly outputs voltage to the steering pad switch assembly and reads voltage changes according to the resistance changes with switch operation.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT A/C CONTROL ASSEMBLY

(a) Remove the A/C control assembly with connectors still connected.





(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) Remove the steering pad switch assembly.





(b) Measure 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 SUB-ASSEMBLY

(a) Disconnect the connector from the spiral cable sub-assembly.





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

Standard Resistance:





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

4. CHECK HARNESS AND CONNECTOR (A/C CONTROL ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)

(a) Disconnect the connector from A/C control assembly.

(b) Disconnect the connector from the spiral cable sub-assembly.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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