Dodge Durango

 Service Manual

Audio Systems » Diagnosis and testing
Remote radio switch

For complete circuit diagrams, refer to Audio System in the Contents of Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Remove the remote radio switch(es) (Fig. 2) from the steering wheel.

Fig. 2 Remote Radio Switches

1 - WHITE REAR SWITCH

2 - BLACK REAR SWITCH

(2) Use an ohmmeter to check the switch resistances as shown in the Remote Radio Switch Test chart. If the remote radio switch resistances check OK, go to Step 3. If not OK, replace the faulty switch.

(3) Check for continuity between the ground circuit cavity of the remote radio switch wire harness connector and a good ground. There should be continuity.

If OK, go to Step 4. If not OK, repair the open ground circuit to ground as required.

(4) Disconnect the 18-way wire harness connector from the Central Timer Module (CTM). Check for continuity between the radio control mux circuit cavity of the remote radio switch wire harness connector and a good ground. There should be no continuity. If OK, go to Step 5. If not OK, repair the shorted radio control mux circuit as required.

(5) Check for continuity between the radio control mux circuit cavities of the remote radio switch wire harness connector and the 18-way CTM wire harness connector. There should be continuity. If OK, refer to the proper Diagnostic Procedures manual to test the CTM and the Chrysler Collision Detection (CCD) data bus. If not OK, repair the open radio control mux circuit as required.

Audio system

Radio receiver

Remote radio switch

Speaker

Antenna

Radio frequency interference