B147F

B147F-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT LOW





For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:
- With the ignition on.
- Set Condition:
- The Amplifier detects a shorted to ground condition on the speaker output circuit.





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: B147F-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

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. 2242167>

2.CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR A SHORT TO GROUND

Disconnect the Amplifier C1 harness connector.

Measure the resistance between ground and the (X300) Amplified Subwoofer 1 (+) circuit.

Is the resistance below 10K ohms?

Yes

- Repair the (X300) Amplified Subwoofer 1 (+) circuit for a short to ground.
- Perform BODY VERIFICATION TEST VER-1. 2242167>

No

- Go To 3

3.CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between ground and the (X390) Amplified Subwoofer 1 (-) circuit.

Is the resistance below 10K ohms?

Yes

- Repair the (X390) Amplified Subwoofer 1 (-) for a short to ground.
- Perform BODY VERIFICATION TEST VER-1. 2242167>

No

- Go To 4

4.CHECK OPERATION OF THE AMPLIFIED SUBWOOFER

Turn the ignition off.

Reconnect the Subwoofer harness connector.

Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground.

Is the resistance below 10K ohms?

Yes

- Replace the Subwoofer 1.
- Perform BODY VERIFICATION TEST VER-1. 2242167>

No

- Replace the Amplifier.
- Perform BODY VERIFICATION TEST VER-1. 2242167>