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: B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes
- Go to Step 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 - VER 1 .
2) CHECK THE (X205) AMPLIFIED LEFT REAR SHELF SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
Disconnect the Amplifier C2 harness connector.

Disconnect the Left Rear Shelf Speaker harness connector.

Measure the resistance between ground and the (X205) Amplified Left Rear Shelf Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes
- Repair the (X205) Amplified Left Rear Shelf Speaker (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1 .
No
- Go to Step 3.
3) CHECK THE (X295) AMPLIFIED LEFT REAR SHELF SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X295) Amplified Left Rear Shelf Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes
- Repair the (X295) Amplified Left Rear Shelf Speaker (-) for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1 .
No
- Go to Step 4.
4) CHECK OPERATION OF THE AMPLIFIED LEFT REAR SHELF SPEAKER
Turn the ignition off.

Reconnect and reinstall the Left Rear Shelf Speaker.

Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.

Is the resistance below 10K ohms?

Yes
- Replace the Left Rear Shelf Speaker in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1 .
No
- Replace the amplifier in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1 .