Power Amp Shutdown

POWER AMP SHUTDOWN





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Ignition in RUN and IOD fuse installed.

- Set Condition:
The radio has sensed a short on the output for more than 10 seconds.





Diagnostic Test

1. DETERMINE FAULT
Turn the ignition on.
Turn the Radio on.
With the scan tool, erase the audio DTC's.
Cycle the ignition switch from off to on and wait 10 seconds.
With the scan tool, read the audio DTC's.
Does the scan tool display POWER AMP SHUTDOWN?

Yes

- Go To2

No

- Refer to the wiring diagrams located in Diagrams/Electrical to help isolate a possible short.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. SPEAKER SECTION OF AMPLIFIER
Turn the ignition off.
Disconnect the Amplifier C2 harness connector.
Turn the ignition on.
Turn the radio on.
With the scan tool, erase the audio DTCs.
Cycle the ignition switch from off to on and wait 10 seconds.
With the scan tool, read DTC's.
Does the scan tool display POWER AMP SHUTDOWN?

Yes

- Go To3

No

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

3. (X53)(X54)(+) CIRCUIT SHORTED TO GROUND




Turn the ignition off.
Disconnect the Radio (C1 on premium) harness connector.
Measure the resistance between ground and each radio (X54) right and left (X53) (+) circuit.
Is the resistance below 1000.0 (1K) ohms?

Yes

- Repair the radio (X54) right or (X53) left (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To4

4. (X55)(X56)(-) CIRCUIT SHORTED TO GROUND




Measure the resistance between ground and each radio (X56) right and (X55) left (-) circuit.
Is the resistance below 1000.0 (1K) ohms?

Yes

- Repair the radio (X56) right or (X55) left (-) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To5

5. SPEAKER SECTION OF RADIO
If there are no possible causes remaining, view repair.

Repair

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