Dodge Ram. Manual — part 46
Symptom:
*AIRBAG INDICATOR ON WITHOUT ACTIVE TROUBLE CODES
POSSIBLE CAUSES
AIRBAG WARNING INDICATOR ON WITHOUT ACTIVE TROUBLE CODES
INSTRUMENT CLUSTER PROBLEMS
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure the battery is fully charged.
Turn the ignition on.
Make sure that all active DTC’s have been repaired before performing this procedure.
With the DRBIII
t select the PASSIVE RESTRAINTS, AIRBAG, MONITOR DIS-
PLAY and read the WARNING LAMP STATES.
With no active DTCs, Does the LAMP REQ by ACM monitor show ON?
All
Yes
→ Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.
No
→ Refer to INSTRUMENT CLUSTER CATEGORY symptom list for
problems related to Instrument Cluster.
Perform __AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
181
AIRBAG
Symptom:
ALL CHANNELS SHORT TOGETHER OR TO GROUND
When Monitored and Set Condition:
ALL CHANNELS SHORT TOGETHER OR TO GROUND
When Monitored:
When the DRBIII
t 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 the Amplifier in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1.
182
AUDIO
Symptom:
ALL INPUTS NO ACTIVITY
When Monitored and Set Condition:
ALL INPUTS NO ACTIVITY
When Monitored:
When the DRBIII
t performs the amplifier Input Test.
Set Condition:
The Amplifier detects no activity on any of the input circuits.
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 any 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 any 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
183
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 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 speaker
circuit at the Amplifier C1 connector.
NOTE: Perform this test on each 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.
184
AUDIO
ALL INPUTS NO ACTIVITY —
Continued
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