All Outputs Shorted - Base Audio System

ALL OUTPUTS SHORT - BASE AUDIO SYSTEM

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
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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 2
NO: Refer to the wiring diagrams to help locate a possible intermittent short.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. LEFT I/P SPEAKER




Turn the ignition off.
Disconnect the Left I/P Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 3
NO: Replace the Left I/P Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. LEFT FRONT DOOR SPEAKER




Turn the ignition off.
Disconnect the Left Front Door Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES; Go To 4
NO: Replace the Left Front Door Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. RIGHT I/P SPEAKER




Turn the ignition off.
Disconnect the Right I/P Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 5
NO: Replace the Right I/P Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5. RIGHT FRONT DOOR SPEAKER




Turn the ignition off.
Disconnect the Right Front Door Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 6
NO: Replace the Right Front Door Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

6. LEFT REAR SPEAKER




Turn the ignition off.
Disconnect the Left Rear Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 7
NO: Replace the Left Rear Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

7. RIGHT REAR SPEAKER




Turn the ignition off.
Disconnect the Right Rear Speaker 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.

Q: Does the Scan Tool display ALL OUTPUTS SHORT?

YES: Go To 8
NO: Replace the Right Rear Speaker.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

8. (+) CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Left I/P Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Right I/P Speaker harness connector.
Disconnect the Left Rear Speaker harness connector.
Disconnect the Right Rear Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between ground and each speaker (+) circuit.

Q: Is the resistance below 1000.0 (1K) ohms?

YES: Repair the speaker (+) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 9

9. (-) CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Left I/P Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Right I/P Speaker harness connector.
Disconnect the Left Rear Speaker harness connector.
Disconnect the Right Rear Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between ground and each speaker (-) circuit.

Q: Is the resistance below 1000.0 (1K) ohms?

YES: Repair the speaker (-) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

10. SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER
Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Left I/P Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Right I/P Speaker harness connector.
Disconnect the Left Rear Speaker harness connector.
Disconnect the Right Rear Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between each speaker (+) circuit and each speaker (-) circuit.

Q: 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. Body Verification Test
NO: Go To 11

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

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