B1485

B1485-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
With the ignition on.

- Set Condition:
The Amplifier detects a short to battery condition on the output circuit.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on, then off, and then on again.
2. With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1485-CHANNEL 8 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 the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK FOR VOLTAGE ON THE (X200) CENTER INSTRUMENT PANEL SPEAKER (+) CIRCUIT




1. Turn the ignition off.
2. Disconnect the Amplifier C1 harness connector.
3. Disconnect the Center Instrument Panel Speaker harness connector.
4. Turn the ignition on.
5. Measure for voltage on the (X200) Center Instrument Panel Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X200) Center Instrument Panel Speaker (+) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK FOR VOLTAGE ON THE (X290) CENTER INSTRUMENT PANEL SPEAKER (-) CIRCUIT




1. Measure for voltage on the (X290) Center Instrument Panel Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X290) Center Instrument Panel Speaker (-) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Amplifier.
- Perform the BODY VERIFICATION TEST. Body Verification Test.