Dodge Caliber. Manual — part 65
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs “Logged Against” the PCM?
Yes
>> Replace the PCM in accordance with the service information.
Perform the appropriate VERIFICATION TEST.
No
>> Replace the module that set this DTC in accordance with the service information.
Perform the appropriate VERIFICATION TEST.
U0121-LOST COMMUNICATION WITH ABS
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Every 7 msec. Conditions: 1) Engine speed greater than 500 RPM. 2) Battery voltage greater than 10v but
less than 16v.
•
Set Condition:
CAN C bus messages not received for 10 seconds.
Theory of Operation
The ABS communicates with other controllers over the CAN C bus. The AWD Module continuously monitors the bus
activity and receives the messages it needs. The CAN C bus is also used to communicate AWD Control Module MIL
status to the Engine Controller, therefor if the Engine Controller is unable to communicate with the AWD Control
Module, the Engine Controller will light the MIL.
Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.
U0141 LOST COMMUNICATION WITH FCM (TIPM)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Every 7 msec. Conditions: 1) Engine speed greater than 500 RPM. 2) Battery voltage greater than 10v but
less than 16v.
•
Set Condition:
CAN C bus messages not received for 10 seconds.
Theory of Operation
Some NGC controllers communicate with other controllers over the CAN C bus. The AWD Control Module contin-
uously monitors the bus activity and receives the messages it needs. The CAN C bus is also used to communicate
PCM MIL status to the Engine Controller, therefor if the Engine Controller is unable to communicate with the AWD
Control Module, the Engine Controller will light the MIL.
Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.
PM
CLUTCH-ELECTRONICALLY CONTROLLED-ELECTRICAL DIAGNOSTICS
3 - 135
U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
Continuously with the ignition on, one valid CAN message received at least once, and no U0002-CAN C Bus
Off Performance DTC present.
•
Set Condition:
When the AWD Control Module detects an incorrect CAN message from the Power Control Module (PCM).
Possible Causes
TIPM NOT CONFIGURED CORRECTLY
ABM CAN BUS DTCS
ENGINE DTCS
ALL WHEEL DRIVE (AWD) CONTROL MODULE
Diagnostic Test
1.
CHECK FOR DTC U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM
NOTE: This DTC must be active for the results of this test to be valid.
Turn the ignition on.
With the scan tool, record and erase DTC’s.
Cycle the ignition switch from off to on.
With the scan tool, read DTC’s.
Does the scan tool display: U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION diagnostic procedure.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE). Diagnostic Test
2.
CHECK IF TIPM CAN BUS DTC’S ARE PRESENT
With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTC’s present?
Yes
>> Refer to 8-ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING and diag-
nose the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Go To 3
3.
CHECK IF ENGINE DTC’S ARE PRESENT
With the scan tool, read Engine DTCs.
Are there any Engine DTC’s present?
Yes
>> Refer to the 9 - ENGINE ELECTRICAL DIAGNOSTICS and diagnose the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Using the schematics as a guide, check the AWD Control Module pins, terminals, and connectors for
corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no
problems are found, replace the AWD Control Module per the Service Information.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
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CLUTCH-ELECTRONICALLY CONTROLLED-ELECTRICAL DIAGNOSTICS
PM
U0415-IMPLAUSIBLE DATA RECEIVED FROM ABS
For a complete wiring diagram Refer to Section 8W
Theory of Operation
The messages sent on the CAN bus are distinguished by an identifier (ID). Each CAN ID is defined to contain a
certain number of bytes. The Transmission Control Module (TCM) verifies that it has received the proper number of
bytes for each ID.
•
When Monitored:
Continuously with the ignition on, one valid CAN ID received at least once, and no U0002-CAN Bus Off Per-
formance DTC present.
•
Set Condition:
When the TCM detects an incorrect CAN ID from the ABS control module.
Possible Causes
TIPM CAN BUS DTC’S PRESENT
ABS DTC’S PRESENT
ALL WHEEL DRIVE (AWD) CONTROL MODULE
Diagnostic Test
1.
CHECK FOR TIPM CAN BUS DTCS
With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTC’s present?
Yes
>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) cate-
gory and perform the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Go To 2
2.
CHECK IF ABS DTC’S ARE PRESENT
With the scan tool, read ABS DTCs.
Are there any ABS DTC’s present?
Yes
>> (Refer to 5 - BRAKES - DIAGNOSIS AND TESTING) category and perform the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Using the schematics as a guide, check the AWD Control Module pins, terminals, and connectors for
corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no
problems are found, replace the TCM per the Service Information. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/TRANSMISSION CONTROL MODULE - REMOVAL)
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
PM
CLUTCH-ELECTRONICALLY CONTROLLED-ELECTRICAL DIAGNOSTICS
3 - 137
U0423-IMPLAUSIBLE DATA RECEIVED FROM CLUSTER/CCN
For a complete wiring diagram Refer to Section 8W
Theory of Operation
The messages sent on the CAN bus are distinguished by an identifier (ID). Each CAN ID is defined to contain a
certain number of bytes. The All Wheel Drive (AWD) Control Module verifies that it has received the proper number
of bytes for each ID.
•
When Monitored:
Continuously with the ignition on, one valid CAN ID received at least once, and no U0002-CAN Bus Off Per-
formance DTC present.
•
Set Condition:
When the AWD Control Module detects an incorrect CAN ID from the CLUSTER/CCN.
Possible Causes
TOTALLY INTEGRATED POWER MODULE (TIPM) NOT CONFIGURED CORRECTLY
CAN BUS DTC’S PRESENT
CLUSTER/CCN MODULE DTC’S PRESENT
ALL WHEEL DRIVE (AWD) CONTROL MODULE
Diagnostic Test
1.
CHECK FOR TIPM CAN BUS DTCS
With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTCs present?
Yes
>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) cate-
gory and perform the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Go To 2
2.
CHECK IF CLUSTER/CCN DTCS ARE PRESENT
With the scan tool, read CLUSTER/CCN DTCs.
Are there any CLUSTER/CCN DTCs present?
Yes
>> (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING) category and per-
form the appropriate symptom.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
No
>> Using the schematics as a guide, check the AWD Control Module pins, terminals, and connectors for
corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no
problems are found, replace the AWD Control Module per the Service Information.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELEC-
TRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).
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CLUTCH-ELECTRONICALLY CONTROLLED-ELECTRICAL DIAGNOSTICS
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