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B142A-RADIO UNIT HIGH TEMPERATURE For the Audio System circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Continuously with the ignition and Radio on. • Set Condition: • The code will set if the temperature inside the radio is above +65°C ( +145°F ) Possible Causes HIGH TEMPERATURE FAILURE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Diagnostic Test 1. VERIFY THAT DTC B142A—RADIO UNIT HIGH TEMPERATURE IS ACTIVE. With the Scan Tool, erase the Audio DTC’s. Start the engine and allow the engine to reach normal operating tem- If the vehicle has been in the hot sunlight or extreme cold, move the The Radio should operate between —23°C and 65°C ( —10°F and With the Scan Tool, read the DTC’s. Does the Scan Tool display, B142A— Radio Unit High Temper- Yes >> Replace the Radio in accordance with the service informa- tion. Perform the BODY VERIFICATION TEST — VER 1. No >> Test Complete. 8A - 42 AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS ND |