Radio Poor Reception

Radio Poor Reception

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Testing

Important: Perform the Audio System Troubleshooting Hints to properly identify the customers concern before using this diagnostic Audio System Troubleshooting Hints

1. With the ignition OFF, disconnect the antenna cable from the radio. With a DMM, verify there is less than 0.2 ohms between the negative battery cable and the coaxial cable metal outer shield.

• If greater than 0.2 ohms, test the antenna mast base for proper ground to the body. If antenna is properly grounded, replace the antenna coax cable.

2. Disconnect the coax cable from the antenna mast. With a DMM, verify there is less than 3.5 ohms between the radio end coaxial cable conductor and the antenna end coaxial cable conductor.

• If greater than 3.5 ohms, replace the coax cable.
• If no problems are found with the coax cable or the grounding of the antenna mast, replace the radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Control Module References for radio replacement, setup, and programming
* Fixed Antenna Replacement
* Antenna Cable Replacement