U0026-CAN B BUS (-) CIRCUIT HIGH





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Continuously.

  • Set Condition:

    The TIPM detects the (D54) CAN B Bus (-) circuit is shorted to voltage.


Possible Causes
  
(D54) CAN B BUS (-) CIRCUIT SHORTED TO VOLTAGE
  
ANY CAN B BUS MODULE
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1.TEST FOR INTERMITTENT CONDITION

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
  • The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

2.CHECK THE (D54) CAN B BUS (-) CIRCUIT FOR A SHORT TO VOLTAGE








Is voltage above 10.0 volts?

Yes
  • Go To 3


No

3.(D54) CAN B BUS (-) CIRCUIT SHORTED TO VOLTAGE





NOTE: When performing the above step, turn the ignition off (wait one minute) before disconnecting any module. When the module is disconnected turn the ignition on to check for a short to voltage.


NOTE: This is to determine if the circuit is shorted to voltage internally within a module or if the circuit is shorted to voltage in the harness.


NOTE: Disconnecting an in-line connector can eliminate a module or group of modules from the list of possible causes for this fault. Refer to the wring diagrams to assist in diagnosis.



Is the voltage above 10.0 volts with all the CAN B Bus modules disconnected?

Yes


No