Dodge Ram Truck 1500-2500-3500. Manual — part 254
SOFTWARE CHECKSUM FAILURE
For the Audio system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
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
1.
AMPLIFIER
NOTE: 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?
Yes
>> Replace the Amplifier in accordance
with the Service Information.
Perform BODY VERIFICATION TEST -
VER 1.
No
>> Refer to the wiring diagrams in the ser-
vice information to help isolate a possi-
ble intermittent condition.
Perform BODY VERIFICATION TEST -
VER 1.
8A - 18
AUDIO - ELECTRICAL DIAGNOSTICS
DR/DH
RIGHT FRONT I/P CHANNEL SHORT ACROSS
For the Audio system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
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 FROM IP SPEAKER
RIGHT FRONT I/P SPEAKER CIRCUITS SHORTED
AMPLIFIER
1.
RIGHT FRONT I/P CHANNEL SHORT ACROSS
NOTE: NOTE: The fault condition must be present to continue
diagnosis. Use the DRBIII
T
to perform the Amplifier pretest to ver-
ify 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?
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.
RIGHT FRONT I/P SPEAKER CIRCUITS SHORTED
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 (-) cir-
cuits.
Is the resistance below 5.0 ohms?
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 Infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
DR/DH
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 19
RIGHT FRONT DOOR CHANNEL SHORT ACROSS
For the Audio system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the DRBIII
T
performs the Speaker Output test.
•
Set Condition:
When the Right Front Door circuit is shorted.
Possible Causes
RIGHT FRONT DOOR CHANNEL SHORT ACROSS
RIGHT FRONT DOOR SPEAKER CIRCUITS SHORTED
RIGHT FRONT DOOR SPEAKER
AMPLIFIER
1.
RIGHT FRONT DOOR CHANNEL SHORT ACROSS
NOTE: NOTE: The fault condition must be present to continue
diagnosis. Use the DRBIII
T
to perform the Amplifier pretest to ver-
ify the fault condition is present before continuing diagnosis.
Turn the ignition off.
Access and disconnect the Right Front Door Speaker harness connec-
tor.
Turn the ignition on.
With the DRBIII
T
, perform the Amplifier pretest.
Is the fault condition still present?
Yes
>> Go To 2
No
>> Replace the Right Front Door Speaker in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
2.
RIGHT FRONT DOOR SPEAKER CIRCUITS SHORTED
Turn the ignition off.
Access and disconnect the Right Front Door Speaker harness connec-
tor.
Access and disconnect the Amplifier C2 harness connector.
Measure the resistance of the Right Front Door Speaker (+) and (-)
circuits.
Is the resistance below 5.0 ohms?
Yes
>> Repair the Right Front Door Speaker (+) and (-) circuits for
a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Amplifier in accordance with the Service Infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
8A - 20
AUDIO - ELECTRICAL DIAGNOSTICS
DR/DH
LEFT REAR CHANNEL SHORT ACROSS
For the Audio system circuit diagram (Refer to 8 - ELECTRICAL/AUDIO - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the DRBIII
T
performs the Speaker Output test.
•
Set Condition:
When the Left Rear Speaker circuit is shorted.
Possible Causes
LEFT REAR CHANNEL SHORT ACROSS
LEFT REAR SPEAKER CIRCUITS SHORTED
AMPLIFIER
1.
LEFT REAR CHANNEL SHORT ACROSS
NOTE: 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 Left Rear Speaker harness connector.
Turn the ignition on.
With the DRBIII
T
, perform the Amplifier pretest.
Is the fault condition still present?
Yes
>> Go To 2
No
>> Replace the Left Rear Speaker in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
2.
LEFT REAR SPEAKER CIRCUITS SHORTED
Turn the ignition off.
Access and disconnect the Left Rear Speaker harness connector.
Access and disconnect the Amplifier C2 harness connector.
Measure the resistance of the Left Rear Speaker (+) and (-) circuits.
Is the resistance below 5.0 ohms?
Yes
>> Repair the Left Rear 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.
DR/DH
AUDIO - ELECTRICAL DIAGNOSTICS
8A - 21
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