U0019-CAN B BUS–ORC





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–ORC IS ACTIVE




Does the scan tool display active: U0019-CAN B BUS–ORC?

Yes
  • Go To 2


No
  • If the DTC is stored, check for an intermittent condition by inspecting the related wiring harness for chafed, 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. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNOSIS AND TESTING)

2.CHECK FOR ACTIVE CAN B BUS RELATED DTCS IN THE FRONT CONTROL MODULE (FCM)



Does the scan tool display any active CAN B BUS related DTCs?

Yes


No
  • Go To 3

3.CHECK (D55) CAN B BUS (+) CIRCUIT FOR AN OPEN



WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.


WARNING: If the Occupant Restraint Controller is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.



NOTE: Check connectors - Clean and repair as necessary.






Is the resistance below 2.0 ohms?

Yes
  • Go To 4


No

4.CHECK (D54) CAN B BUS (–) CIRCUIT FOR AN OPEN





Is the resistance below 2.0 ohms?

Yes


No