Jeep Grand Cherokee WK. Manual — part 418
U0019–CAN B BUS (CONTINUED)
3.
(D55) CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the Instrument Cluster C3 harness connector.
Disconnect the Front Control Module C1 harness connector.
Measure the resistance of the (D55) Can B Bus (+) circuit between the
Front Control Module C1 harness connector and the Instrument Clus-
ter C3 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
No
>> Repair the Can B Bus (+) circuit for an open.
Perform BODY VERIFICATION TEST VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
4.
(D54) CAN B BUS (–) CIRCUIT OPEN
Measure the resistance of the (D54) Can B Bus (–) circuit between the
Front Control Module C1 harness connector and the Instrument Clus-
ter C3 harness connector.
Is the resistance below 2.0 ohms?
Yes
>> Replace the Instrument Cluster in accordance with the ser-
vice information.
Perform BODY VERIFICATION TEST VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Repair the Can B Bus (–) circuit for an open.
Perform BODY VERIFICATION TEST VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
8J - 46
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
WK
U0141–LOST COMMUNICATION WITH FRONT CONTROL 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 COMMUNICATION 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 COMMUNICATION 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.
U0159-LOST COMMUNICATION WITH PARKING ASSIST CONTROL 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.
U0164-LOST COMMUNICATION WITH HVAC CONTROL 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.
U0168-LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE
(SKREEM/WCM)
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0169-LOST COMMUNICATION WITH SUNROOF CONTROL 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.
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.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
WK
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
8J - 47
U0195-LOST COMMUNICATION WITH SDARS
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0196-LOST COMMUNICATION WITH VEHICLE ENTERTAINMENT CONTROL
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.
U0197-LOST COMMUNICATION WITH HANDS FREE PHONE 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 COMMUNICATION WITH DRIVER 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 COMMUNICATION 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.
U0208-LOST COMMUNICATION WITH HEATED SEAT CONTROL 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.
U0209-LOST COMMUNICATION WITH MEMORY SEAT CONTROL 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.
U0212-LOST COMMUNICATION WITH SCCM-CAN-B
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0231-LOST COMMUNICATION WITH RAIN SENSING 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.
8J - 48
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
WK
U0241-LOST COMMUNICATION WITH AUTO HIGHBEAM HEADLAMP CONTROL
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.
WK
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
8J - 49
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