Dodge Caliber. Manual — part 211
3.
CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Totally Integrated Power Module C3 harness connector.
Measure the resistance of the (D55) CAN B BUS (+) circuit between the
Totally Integrated Power Module C3 harness connector and the Ampli-
fier C1 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
Perform BODY VERIFICATION TEST - VER 1.
No
>> Repair the CAN B BUS (+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4.
CAN B BUS (–) CIRCUIT OPEN
Measure the resistance of the (D54) CAN B BUS (–) circuit between the
Totally Integrated Power Module C3 harness connector and the Ampli-
fier C1 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Replace the Amplifier in accordance with the service infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Repair the CAN B BUS (–) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
PM
AUDIO/VIDEO SYSTEMS- ELECTRICAL DIAGNOSIS
8A - 117
U0020-CAN B BUS OFF PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
Continuously.
•
Set Condition:
•
Whenever the CAN B BUS (+) or B BUS (–) circuit is open, shorted to voltage or shorted to ground, this code
will set.
Possible Causes
CAN B BUS DTCs IN THE TOTALLY INTEGRATED POWER MODULE
(D54) CAN B BUS (–) CIRCUIT OPEN
(D55) CAN B BUS (+) CIRCUIT OPEN
AMPLIFIER
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTCs.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: U0020-CAN B BUS OFF PERFORMANCE?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
CHECK FRONT CONTROL MODULE DTCs
With the scan tool, read Totally Integrated Power Module DTCs.
Does the scan tool display any CAN B BUS DTCs – ACTIVE?
Yes
>> Refer to the symptom list for problems related to Communication in the ELECTRICAL.– ELECTRONIC
CONTROL MODULES – ELECTRICAL DIAGNOSES section.
No
>> Go to 3
8A - 118
AUDIO/VIDEO SYSTEMS- ELECTRICAL DIAGNOSIS
PM
3.
CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Totally Integrated Power Module C3 harness connector.
Measure the resistance of the (D55) CAN B BUS (+) circuit between the
Totally Integrated Power module C3 harness connector and the Ampli-
fier C1 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
Perform BODY VERIFICATION TEST - VER 1.
No
>> Repair the CAN B BUS (+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4.
CAN B BUS (–) CIRCUIT OPEN
Measure the resistance of the (D54) CAN B BUS (–) circuit between the
Totally Integrated Power Module C3 harness connector and the Ampli-
fier C1 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Replace the Amplifier in accordance with the service infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Repair the CAN B BUS (–) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
U0184-LOST COMMUNICATION WITH RADIO
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0186-LOST COMMUNICATION WITH AUDIO AMPLIFIER
For a complete wiring diagram Refer to Section 8W.
PM
AUDIO/VIDEO SYSTEMS- ELECTRICAL DIAGNOSIS
8A - 119
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0195-LOST COMMUNICATION WITH SDAR
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0197-LOST COMMINICATION WITH HANDS FREE MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0199-LOST COMMINICATION WITH DRIVERS DOOR MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0200-LOST COMMINICATION WITH PASSENGER DOOR MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0151-LOST COMMINICATION WITH OCCUPANT RESTRAINT CONTROLLER
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0154-LOST COMMINICATION WITH OCCUPANT CLASSIFICATION MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
8A - 120
AUDIO/VIDEO SYSTEMS- ELECTRICAL DIAGNOSIS
PM
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