2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

ALL OUTPUTS SHORT - PREMIUM 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 FRONT DOOR SPEAKER

RIGHT FRONT DOOR SPEAKER

(+) CIRCUIT SHORTED TO GROUND

(-) CIRCUIT SHORTED TO GROUND

SPEAKER (+) & (-) CIRCUITS SHORTED TOGETHER

SPEAKER SECTION OF RADIO

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 ALL OUTPUTS SHORT?

Yes

Go To 2

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 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.

Does the Scan Tool display ALL OUTPUTS SHORT?

Yes

Go To 3

No

Replace the Left Front Door Speaker.
Perform BODY VERIFICATION TEST - VER 1.

3. 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.

Does the Scan Tool display ALL OUTPUTS SHORT?

Yes

Go To 4

No

Replace the Right Front Door Speaker.
Perform BODY VERIFICATION TEST - VER 1.

4. (+) CIRCUIT SHORTED TO GROUND

Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between ground and each speaker (+) circuit.

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 To 5

5. (-) CIRCUIT SHORTED TO GROUND

Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between ground and each speaker (-) circuit.

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 To 6

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

Turn the ignition off.
Disconnect the Left Front Door Speaker harness connector.
Disconnect the Right Front Door Speaker harness connector.
Disconnect the Radio C1 harness connector.
Measure the resistance between each speaker (+) circuit and each speaker (-) circuit.

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

Go To 7

7. SPEAKER SECTION OF RADIO

If there are no possible causes remaining, view repair.

Repair

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