Electronic Booster Gauge (EBG)
U0019-CAN B BUS
For a complete wiring diagram, refer to the Wiring Information. Electrical Diagrams
- When Monitored:
Continuously with the ignition in the Run or Accessory position.
- Set Condition:
Whenever the CAN B Bus (+) or CAN B Bus (-) circuit is open, shorted to voltage, or shorted to ground.
1. VERIFY DTC U0019-CAN B BUS IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read EBG DTCs.
Does the scan tool display active DTC: U0019-CAN B BUS?
Yes
- Go To 2
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
2. CHECK FOR ACTIVE CAN B BUS RELATED DTCS IN THE TIPM
1. With the scan tool, read TIPM DTCs.
Does the scan tool display any active CAN B BUS related DTCs?
Yes
- Totally Integrated Power Module (TIPM) Perform the appropriate diagnostic procedures.
No
- Go To 3
3. CHECK THE (D55) CAN B BUS (+) CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the EBG harness connector.
NOTE: Check connectors - Clean and repair as necessary.
3. Disconnect the TIPM C3 harness connector.
4. Measure the resistance of the (D55) CAN B Bus (+) circuit between the TIPM C3 connector and the EBG connector.
Is the resistance below 2.0 Ohms?
Yes
- Go To 4
No
- Repair the open in the (D55) CAN B Bus (+) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
4. CHECK THE (D54) CAN B BUS (-) CIRCUIT FOR AN OPEN
1. Measure the resistance of the (D54) CAN B Bus (-) circuit between the TIPM C3 connector and the EBG connector.
Is the resistance below 2.0 Ohms?
Yes
- Replace the EBG.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Repair the open in the (D54) CAN B Bus (-) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.