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• When Monitored: • Set Condition: Possible Causes (X40) AUDIO MUX RIGHT CIRCUIT OPEN (X140) AUDIO RETURN CIRCUIT OPEN (X40) AUDIO MUX RIGHT CIRCUIT SHORT TO VOLTAGE HANDS FREE MODULE Diagnostic Test 1. CHECK FOR ACTIVE DTC Turn the ignition on. With the scan tool, erase the HFM DTCs. Attempt to make a phone call using the system. With the scan tool, read the HFM DTCs. Did this DTC reset? Yes >> Go To 2 No >> The condition that set this DTC is no longer present. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con- 2. (X40) AUDIO MUX RIGHT CIRCUIT OPEN Turn the ignition off. Disconnect the Hands Free Module harness connector. Disconnect the Radio C2 harness connector. Measure the resistance of the (X40) Audio MUX Right circuit between the HFM connector and the radio connector. Is the resistance below 5.0 ohms? Yes >> Go To 3 No >> Repair the (X40) Audio MUX Right circuit for an open Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL 8T - 54 NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS KJ |