Remote Radio Switches

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

On vehicles equipped with airbags, refer to electrical, restraints 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.

Any diagnosis of the Audio system should begin with duplicating the customer concern (verify the problem), include checking for applicable Technical Service Bulletins (TSB) and the use of a diagnostic scan tool. Check for any Diagnostic Trouble Code (DTC) data. If a DTC is found, refer to DIAGNOSTIC CODE INDEX, ETM or DIAGNOSTIC CODE INDEX, RRM and perform the appropriate diagnostic procedure before proceeding in this information. Refer to the appropriate wiring information.

Remove the remote radio switch(es) from the steering wheel. Refer to SWITCH, REMOTE RADIO, REMOVAL .

Use an ohmmeter to check the switch resistances as shown in the Remote Radio Switch Test chart.

REMOTE RADIO SWITCH TEST
Switch	Switch Position	Minimum Resistance (kilohms)	Nominal Resistance (kilohms)	Maximum Resistance (kilohms)
Right	Volume Up	6.732	6.8	6.868
Right	Volume Down	14.850	15	15.151
Right	Mode Advance	0	0	0
Left	Seek Up	1.188	1.2	1.212
Left	Seek Down	3.267	3.3	3.333
Left	Pre-Set Station Advance	0.465	0.47	0.474

If the switch resistance checks OK, go to Step 4 . If not OK, replace the ineffective switch.
Check for continuity between the ground circuit cavity of the steering wheel wire harness connectors for the switches and a known good ground. There should be continuity. If OK, go to Step 5 . If not OK, repair the open ground circuit as required.
Disconnect the appropriate wire harness connector from the Body Control Module (BCM). Check for continuity between the radio control circuit cavity of the steering wire harness connectors for the switches and ground. There should be no continuity. If OK, go to Step 6 . If not OK, repair the shorted radio control circuit as required.
Check for continuity between the radio control circuit cavities of the steering wheel wire harness connectors for the switches and the BCM wire harness connector. There should be continuity. If OK, use a diagnostic scan tool and the appropriate diagnostic procedures to test the BCM, the radio and the Controller Area Network (CAN) data bus. If not OK, repair the open radio control circuit as required.