Diagnosis And Testing - Remote Switches
Any diagnosis of the Audio system should begin with the use of the scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic Service information.
For complete circuit diagrams, refer to the appropriate wiring information.
Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.
- Disconnect and isolate the battery negative cable. Remove the remote radio switch(es) from the steering wheel.
- Use an ohmmeter to check the switch resistances as shown in the Remote Radio Switch Test table. If the remote radio switch resistances check OK, go to 3. If not OK, replace the faulty switch.REMOTE RADIO SWITCH TEST
Switch Switch Position Minimum Resistance Nominal Resistance Maximum Resistance Right (White) Volume Up 6.732 ohms 6.8 ohms 6.868 ohms Right (White) Volume Down 14.850 ohms 15 ohms 15.151 ohms Right (White) Mode Advance 0 ohms 0 ohms 0 ohms Left (Black) Seek Up 1.188 ohms 1.2 ohms 1.212 ohms Left (Black) Seek Down 3.267 ohms 3.3 ohms 3.333 ohms Left (Black) Pre-Set Station Advance .465 ohms .47 ohms .474 ohms - Reconnect the battery negative cable. Turn the ignition switch to the ON position. Check for 5 volts at the radio control circuit cavities of the steering wheel wire harness connectors for both remote radio switches. If OK, refer to the proper Body Diagnostic Procedures Service Information . If not OK, repair the circuit as required.