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B1485-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT HIGH (CONTINUED) For the Amplifier circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT SHORT TO VOLTAGE (X391) AMPLIFIED SUBWOOFER 2 (-) 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: B1485-CHANNEL 8 AUDIO Yes >> Go To 2 No >> The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic Perform BODY VERIFICATION TEST VER-1. 2. CHECK FOR VOLTAGE ON THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Amplified Subwoofer 2 harness connector. Turn the ignition on. Measure for voltage on the (X301) Amplified Subwoofer 2 (+) circuit. Is the voltage above 10.0 volts? Yes >> Repair the (X301) Amplified Subwoofer 2 (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. No >> Go To 3 HB AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS 8A - 157 |