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• When Monitored: • With the ignition on. • Set Condition: • The Amplifier detects a short to battery condition on the output circuit. Possible Causes (X393) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT SHORT TO VOLTAGE (X303) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT SHORT TO VOLTAGE AMPLIFIER Diagnostic Test 1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes >> Go To 2 No >> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche- matic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST VER-1. 2. CHECK FOR VOLTAGE ON THE (X393) AMPLIFIED LEFT REAR DOOR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Amplified Left Rear Door Speaker harness connector. Turn the ignition on. Measure for voltage on the (X393) Amplified Left Rear Door Speaker (+) circuit. Is the voltage above 10.0 volts? Yes >> Repair the (X393) Amplified Left Rear Door Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. No >> Go To 3 3. CHECK FOR VOLTAGE ON THE (X303) AMPLIFIED LEFT REAR DOOR SPEAKER (-) CIRCUIT Measure for voltage on the (X303) Amplified Left Rear Door Speaker (-) circuit. Is the voltage above 10.0 volts? Yes >> Repair the (X303) Amplified Left Rear Door Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. No >> Replace the Amplifier in accordance with the service information. Perform BODY VERIFICATION TEST VER-1. 8A - 62 AUDIO - ELECTRICAL DIAGNOSTICS LX |