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 condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

2. CHECK FOR VOLTAGE ON THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT





Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Amplified Left Front Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X209) Amplified Left Front Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X209) Amplified Left Front Speaker (+) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. CHECK FOR VOLTAGE ON THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT





Measure for voltage on the (X299) Amplified Left Front Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (X299) Amplified Left Front Speaker (-) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the amplifier.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test