B146E

B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
- With the ignition on. Radio volume at 25 or higher.
- Set Condition:
- The amplifier detects that the output circuits are shorted together.





Diagnostic Test

1. CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, erase Amplifier DTCs.
Turn the radio on.
Turn the volume level to 25.
With the scan tool, read Amplifier DTCs.
Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

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 THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER
Turn the ignition off.
Disconnect the Amplified Left Front Speaker.
Measure the resistance of the speaker between the two terminals.
Is the resistance of the speaker less than 1 ohm?

Yes

- Replace the Amplified Left Front Speaker.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go to 3

3. CHECK THE (X201) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT, AND THE (X291) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
Disconnect the Amplifier C2 harness connector.
Measure the resistance between the (X201) Amplified Left Front Speaker (+) circuit, and the (X291) Amplified Left Front Speaker (-) circuit.
Is the resistance below 10K ohms?

Yes

- Repair the (X201) Amplified Left Front Speaker (+) circuit, and the (X291) Amplified Left Front Speaker (-) circuit for a short together.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

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