B146C

B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- With the ignition on.
- Set Condition:
- The amplifier detects a short to battery condition on the 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: B146C-CHANNEL 3 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 (X153) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT





Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Amplified Left Front Door Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X153) Amplified Left Front Door Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X153) Amplified Left Front Door Speaker (+) 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 (X155) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT





Measure for voltage on the (X155) Amplified Left Front Door Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X155) Amplified Left Front Door Speaker (-) 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