Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THAT DTC B142A-4B-RADIO UNIT HIGH TEMPERATURE - OVER TEMPERATURE.

With the scan tool, erase the Radio DTCs.
Start the engine and allow the engine to reach normal operating temperature.
If the vehicle has been in the hot sunlight or extreme cold, move the vehicle indoors and open the doors to allow the inside temperature to stabilize.
The Radio should operate between -23°C and 65°C (-10°F and 149°F).
With the scan tool, read the DTCs.
Did the DTC return?

Yes
- Replace the Radio in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Test Complete.