Dodge Ram. Manual — part 63
Symptom:
SOFTWARE CHECKSUM FAILURE
When Monitored and Set Condition:
SOFTWARE CHECKSUM FAILURE
When Monitored:
When the DRBIII
t performs the PCI Amplifier Test.
Set Condition:
When the Amplifier detects a fault with the software checksum.
POSSIBLE CAUSES
AMPLIFIER
INTERMITTENT CONDITION
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 on.
With the DRBIII
t, perform the Amplifier pretest.
Is the fault condition present?
All
Yes
→ Replace the Amplifier in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to the wiring diagrams in the service information to help
isolate a possible intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
249
AUDIO
Symptom:
*AMPLIFIER PRETEST
POSSIBLE CAUSES
AMPLIFIER PRETEST
NO FAULT MESSAGE DISPLAYED
TEST
ACTION
APPLICABILITY
1
NOTE: Perform this test if the vehicle is experiencing a problem with no
sound or poor sound quality from a speaker or channel.
Turn the ignition on.
Turn the radio on.
With the DRBIII
t enter Body, Audio Systems, Digital Audio Amplifier then System
Tests.
With the DRBIII
t enter any one of the amplifier tests.
NOTE: The Continuous Tone test will send a continuous tone to each
speaker. This test will verify the integrity of an individual speaker channel,
but will not display any fault messages.
NOTE: The PCI Amplifier Test will detect a PCI or Checksum Failure, and
will display fault messages.
NOTE: The Input Test will detect activity on the amplifier input channels,
and will display fault messages.
NOTE: The Speaker Output Test will detect activity on the amplifier output
channels, and will display fault messages.
Did the DRBIII
t display a fault message?
All
Yes
→ Perform the appropriate corresponding test.
Perform BODY VERIFICATION TEST - VER 1.
No
→ If the DRB does not display a fault message and the vehicle is
experiencing a problem with a speaker or channel, refer to the
wiring diagrams in the service information to help isolate a
possible open in the wiring to the affected speaker or channel.
Perform BODY VERIFICATION TEST - VER 1.
250
AUDIO
Symptom:
*CHIME INOPERATIVE
POSSIBLE CAUSES
ACTUATE CHIME WITH DRBIII
t
INSTRUMENT CLUSTER - CHIME INOPERATIVE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Close the doors.
With the DRBIII
t, actuate the Chime.
Does the chime sound when actuated by the DRB?
All
Yes
→ If the chime operates as it should, check for other reasons that the
chime is being inoperative. Refer to symptom list for related
problems.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Instrument Cluster in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
251
CHIME
Symptom:
*CHIME SOUNDS WITH DRIVER DOOR OPEN KEY REMOVED
POSSIBLE CAUSES
KEY-IN IGN SW STATUS
KEY-IN IGNITION SWITCH SHORTED
KEY-IN IGNITION SW SENSE SHORT TO GROUND
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure the exterior lamps turn on and off properly and are off before
continuing this test.
With the DRB III select: Instrument Cluster, Input Output.
Read the Key-In Ign Sw.
Remove the key from the ignition switch.
Does the DRB III show Key-In Ign OPEN?
All
Yes
→ Replace and program the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Ignition Switch connector.
Did the chime turn off?
All
Yes
→ Check the Ignition Lock Cylinder for damage. If OK replace the
Ignition Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn ignition off.
Disconnect the Ignition Switch connector.
Disconnect the Instrument Cluster C3 connector.
Measure the resistance of the Key-in Ignition Switch Sense circuit to ground at the
Ignition Switch connector.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Key-In Ignition Switch Sense wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
252
CHIME
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