Dodge Ram. Manual — part 61
Symptom:
RIGHT FRONT I/P AND RIGHT REAR CHANNELS SHORT ACROSS
When Monitored and Set Condition:
RIGHT FRONT I/P AND RIGHT REAR CHANNELS SHORT ACROSS
When Monitored:
When the DRBIII
t performs the Speaker Output test.
Set Condition:
When the Right Front I/P Speaker and Right Rear Speaker circuits are
simultaneously shorted.
POSSIBLE CAUSES
RIGHT FRONT I/P AND RIGHT REAR CHANNELS SHORTED ACROSS
RIGHT FRONT I/P AND RIGHT 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 Right Front I/P and Right 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 Right Front I/P and Right Rear Speakers in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Access and disconnect the Right Front I/P Speaker harness connector.
Access and disconnect the Right Rear Speaker harness connector.
Access and disconnect the Amplifier C2 harness connector.
Measure the resistance of the Right Front I/P Speaker (+) and (-) circuits.
Measure the resistance of the Right 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.
241
AUDIO
Symptom:
RIGHT FRONT I/P CHANNEL SHORT ACROSS
When Monitored and Set Condition:
RIGHT FRONT I/P CHANNEL SHORT ACROSS
When Monitored:
When the DRBIII
t performs the Speaker Output test.
Set Condition:
When the Right Front I/P Speaker circuit is shorted.
POSSIBLE CAUSES
RIGHT FRONT I/P CHANNEL SHORT ACROSS
RIGHT FRONT I/P 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.
Turn the ignition off.
Access and disconnect the Right Front I/P Speaker harness connector.
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 Right Front I/P Speaker in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Access and disconnect the Right Front I/P Speaker harness connector.
Access and disconnect the Amplifier C2 harness connector.
Measure the resistance of the Right Front I/P Speaker (+) and (-) circuits.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Right Front I/P 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.
242
AUDIO
Symptom:
RIGHT FRONT INPUT NO ACTIVITY
When Monitored and Set Condition:
RIGHT FRONT INPUT NO ACTIVITY
When Monitored:
When the DRBIII
t performs the amplifier Input Test.
Set Condition:
The Amplifier detects no activity on the input circuit.
POSSIBLE CAUSES
(+) CIRCUIT SHORTED TO GROUND
(-) CIRCUIT SHORTED TO GROUND
OPEN SPEAKER CIRCUITS
AMPLIFIER
RADIO
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.
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Radio harness connector.
Measure the resistance between ground and the right front speaker (+) circuit.
Is the resistance below 1000.0 (1K) ohms?
All
Yes
→ Repair the speaker (+) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Radio harness connector.
Measure the resistance between ground and the right front speaker (-) circuit.
Is the resistance below 1000.0 (1K) ohms?
All
Yes
→ Repair the speaker (-) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
243
AUDIO
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Radio harness connector.
Measure the resistance of each right front speaker (+) and (-) circuit between the
Radio and the Amplifier.
Is the resistance below 5.0 ohms for each circuit?
All
Yes
→ Go To 4
No
→ Repair the speaker circuits for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Reconnect the Radio harness connector.
Disconnect the Amplifier C1 harness connector.
Turn the ignition on and the Radio on to a known good radio station or have a tape
or CD playing.
Turn the radio volume control up at least 25 positions.
With the voltmeter in the AC voltage scale, measure the voltage of each right front
speaker circuit at the Amplifier C1 connector.
NOTE: Perform this test on each right front speaker circuit.
Is the voltage at least 120mV AC (0.12 VAC) on each speaker circuit?
All
Yes
→ Replace the Amplifier in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Radio.
Perform BODY VERIFICATION TEST - VER 1.
244
AUDIO
RIGHT FRONT INPUT NO ACTIVITY —
Continued
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