POWER AMP SHUTDOWN - BASE AUDIO SYSTEM

For a complete wiring diagram Refer to Section 8W


  • 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.


Possible Causes
  
LEFT I/P SPEAKER
  
LEFT FRONT DOOR SPEAKER
  
RIGHT I/P SPEAKER
  
RIGHT FRONT DOOR SPEAKER
  
LEFT REAR SPEAKER
  
RIGHT REAR SPEAKER
  
(+) CIRCUIT SHORTED TO GROUND
  
SPEAKER SECTION OF RADIO
  
(-) CIRCUIT SHORTED TO GROUND
  
SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER
  



Diagnostic Test

1.DETERMINE FAULT







Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To2


No
  • Refer to the wiring diagrams located in the service information to help isolate a possible intermittent short.
  • Perform BODY VERIFICATION TEST - VER 1.

2.LEFT I/P SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To3


No
  • Replace the Left I/P Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

3.LEFT FRONT DOOR SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To4


No
  • Replace the Left Front Door Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

4.RIGHT I/P SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To5


No
  • Replace the Right I/P Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

5.RIGHT FRONT DOOR SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To6


No
  • Replace the Right Front Door Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

6.LEFT REAR SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To7


No
  • Replace the Left Rear Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

7.RIGHT REAR SPEAKER











Does the Scan Tool display POWER AMP SHUTDOWN?

Yes
  • Go To8


No
  • Replace the Right Rear Speaker.
  • Perform BODY VERIFICATION TEST - VER 1.

8.(+) CIRCUIT SHORTED TO GROUND











Is the resistance below 1000.0 (1K) ohms?

Yes
  • Repair the speaker (+) circuit for a short to ground.
  • Perform BODY VERIFICATION TEST - VER 1.


No
  • Go To9

9.(-) CIRCUIT SHORTED TO GROUND











Is the resistance below 1000.0 (1K) ohms?

Yes
  • Repair the speaker (-) circuit for a short to ground.
  • Perform BODY VERIFICATION TEST - VER 1.


No

10.SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER











Is the resistance below 1000.0 (1K) ohms for any of the measurements?

Yes
  • Repair the shorted together speaker circuits.
  • Perform BODY VERIFICATION TEST - VER 1.


No

11.SPEAKER SECTION OF RADIO


If there are no possible causes remaining, view repair.

Repair
  • Replace the Radio.
  • Perform BODY VERIFICATION TEST - VER 1.