Dodge Ram 2004, Service Manual

Page: 224 / 642

Symptom:
LEFT FRONT I/P AND LEFT REAR CHANNELS SHORT ACROSS
When Monitored and Set Condition:
LEFT FRONT I/P AND LEFT REAR CHANNELS SHORT ACROSS
When Monitored: When the DRBIII
t
performs the Speaker Output test.
Set Condition: When the Left Front I/P Speaker and Left Rear Speaker circuits are
simultaneously shorted.
POSSIBLE CAUSES
LEFT FRONT I/P AND LEFT REAR CHANNELS SHORTED ACROSS
LEFT FRONT I/P AND LEFT REAR SPEAKER CIRCUITS SHORTED
AMPLIFIER
TEST ACTION APPLICABILITY
1 NOTE: The fault condition must be present to continue diagnosis. Use the
DRBIII
t
to perform the Amplifier pretest to verify the fault condition is
present before continuing diagnosis.
NOTE: Amplifier speaker circuits are both shorted simultaneously.
Turn the ignition off.
Access and disconnect the Left Front I/P and Left Rear Speaker harness connectors.
Turn the ignition on.
With the DRBIII
t
, perform the Amplifier pretest.
Is the fault condition still present?
All
Yes
→
Go To 2
No
→
Replace the Left Front I/P and Left Rear Speakers in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Access and disconnect the Left Front I/P Speaker harness connector.
Access and disconnect the Left Rear Speaker harness connector.
Access and disconnect the Amplifier C2 harness connector.
Measure the resistance of the Left Front I/P Speaker (+) and (-) circuits.
Measure the resistance of the Left Rear Speaker (+) and (-) circuits.
Is the resistance below 5.0 ohms on each measurement? All
Yes
→
Repair both Speaker (+) and (-) circuits for a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Amplifier in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
210
AUDIO