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B1459-TELEMATICS MIRROR CONTROL CIRCUIT LOW (CONTINUED) For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (X793) MICROPHONE FEED CIRCUIT OPEN (X793) MICROPHONE FEED CIRCUIT SHORT TO GROUND INSIDE REARVIEW MIRROR HANDS FREE MODULE Diagnostic Test 1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTC’s. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per Attempt to make a phone call with the system. With the scan tool, read the active DTC’s. Does the scan tool display this DTC as active? Yes >> Go To 2 No >> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con- nectors. Look for broken, bent, pushed out, or corroded terminals. 8T - 36 NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS ND |