Symptom:
ALL CHANNELS SHORT TOGETHER OR TO GROUND
When Monitored and Set Condition:
ALL CHANNELS SHORT TOGETHER OR TO GROUND
When Monitored: When the DRBIIIt performs the Speaker Output test.
Set Condition: Each Amplifier channel is shorted together or to ground.
POSSIBLE CAUSES
ALL CHANNELS SHORTED TO GROUND
SPEAKER CHANNELS SHORTED TOGETHER
AMPLIFIER
TEST ACTION APPLICABILITY
1 NOTE: The fault condition must be present to continue diagnosis. Use the
DRB III to perform the Amplifier Pre-test to verify the fault condition is
present before continuing diagnosis.
NOTE: Inspect the Amplifier harness connector and terminals for damage
that could cause several terminals/circuits to contact each other. Repair as
necessary.
Turn the ignition off.
Disconnect the Amplifier C2 harness connector.
Measure the resistance between ground and each of the Speaker (+) and (-) circuits
(12 circuits total).
Is the resistance below 1000 ohms for any of the measurements?
All
Yes → Repair the circuits that measured below 1000 ohms for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition off.
Disconnect the Amplifier C2 harness connector.
Disconnect each speaker harness connector (7 total).
Measure the resistance between each Speaker (+) and (-) circuits and every other
Speaker circuit.
Is the resistance below 1000 ohms for any of the measurements?
All
Yes → Repair the circuits that measured below 1000 ohms for a short
together.
Perform BODY VERIFICATION TEST - VER 1.
No → Replace theAmplifier in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1.
182
AUDIO
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