U1105-CAN B SIGNAL MISSING





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Continuously

  • Set Condition:

    When the CAN B Bus messages are not received within 2 seconds.


Possible Causes
  
OTHER CAN B BUS DTC's SET IN TIPM
  
(D55) CAN B BUS (+) CIRCUIT OPEN
  
(D54) CAN B BUS (-) CIRCUIT OPEN
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1.CHECK FOR ACTIVE DTCS

NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.






Does the scan tool display this DTC as active?

Yes
  • Go To 2


No
  • If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

2.CHECK TIPM FOR U0019 DTC



Does the scan tool display U0019 CAN B BUS – ACTIVE?

Yes
  • Refer to the table of contents in this section and perform the U0019 diagnostic procedure.


No
  • Go To 3

3.(D55) CAN B BUS (+) CIRCUIT OPEN








Is any voltage present on this circuit?

Yes
  • Go To 4


No

4.(D54) CAN B BUS (–) CIRCUIT OPEN





Is any voltage present on this circuit?

Yes


No