B1480
B1480-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT HIGHB1480-Channel 7 Audio Speaker Output Circuit High:
WHEN MONITORED
With the ignition on.
SET CONDITION
The Amplifier detects a short to battery condition on the output circuit.
POSSIBLE CAUSES
- (X300) amplified subwoofer 1 (+) circuit short to voltage
- (X390) amplified subwoofer 1 (-) 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.
Q: Does the scan tool display active: B1480-CHANNEL 7 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/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
2. CHECK FOR VOLTAGE ON THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Amplified Subwoofer 1 harness connector.
Turn the ignition on.
Measure for voltage on the (X300) Amplified Subwoofer 1 (+) circuit.
Q: Is the voltage above 10.0 volts?
YES: Repair the (X300) Amplified Subwoofer 1 (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
NO: Go To 3
3. CHECK FOR VOLTAGE ON THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT
Measure for voltage on the (X390) Amplified Subwoofer 1 (-) circuit.
Q: Is the voltage above 10.0 volts?
YES: Repair the (X390) Amplified Subwoofer 1 (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
NO: Replace the Amplifier. Perform BODY VERIFICATION TEST VER-1. Body Verification Test