Dodge Durango (HB). Manual — part 528
B223D-OCCUPANT CLASSIFICATION MODULE DTC PRESENT (CONTINUED)
3.
REPLACE THE OCCUPANT RESTRAINT CONTROLLER
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the
proper precautions could result in accidental airbag deployment and personal injury or death.
If there are no possible causes remaining, view repair.
Repair
Replace the Occupant Restraint Controller in accordance with Service Instructions.
Perform the ORC VERIFICATION TEST - VER 1.
HB
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 381
U0019–CAN B BUS
8O - 382
RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
U0019–CAN B BUS (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
Whenever the CAN B Bus (+) or CAN B Bus (-) circuit is open, shorted to voltage, or shorted to ground.
Possible Causes
ACTIVE U0019 CAN B BUS DTC IN FRONT CONTROL MODULE
(D55) CAN B BUS (+) CIRCUIT OPEN
(D54) CAN B BUS (-) CIRCUIT OPEN
OCCUPANT RESTRAINT CONTROLLER (ORC)
Diagnostic Test
1.
VERIFY DTC U0019–CAN B BUS IS ACTIVE
Turn the ignition on.
With the scan tool, read Occupant Restraint Controller (ORC) DTCs.
Does the scan tool display active: U0019–CAN B BUS?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition by
inspecting the related wiring harness for chaffed, pierced,
pinched, and partially broken wires. Also, inspect the
related connectors for broken, bent, pushed out, spread,
corroded, or contaminated terminals.
Perform ORC VERIFICATION TEST – VER 1.
HB
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 383
U0019–CAN B BUS (CONTINUED)
2.
CHECK FOR ACTIVE CAN B BUS RELATED DTCS IN THE FRONT CONTROL MODULE (FCM)
With the scan tool, read Front Control Module (FCM) DTCs
Does the scan tool display any active CAN B BUS related
DTCs?
Yes
>> Diagnose and repair the DTC(s). (Refer to 8 - ELECTRI-
CAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS
AND TESTING)
No
>> Go To 3
3.
CHECK (D55) CAN B BUS (+) CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the ORC C2 connector.
Disconnect the Front Control Module (FCM) C1 connector.
Measure the resistance of the (D55) CAN B Bus (+) circuit between
the Front Control Module C1 connector and the ORC C2 connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
No
>> Repair the (D55) CAN B Bus (+) circuit for an open.
Perform ORC VERIFICATION TEST - VER 1.
8O - 384
RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
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