Electronic Overhead Module (EOM)

U0019-CAN B BUS





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously.

- Set Condition:
If the Can B Bus (+) or B Bus (-) circuit is open, shorted to voltage, or shorted to ground.





1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

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

- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- Go To 3

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




1. Turn the ignition off.
2. Disconnect the Electronic Overhead Module harness connector.
3. Disconnect the TIPM C5 harness connector.
4. Measure the resistance of the (D55) Can B Bus (+) circuit between the TIPM C5 harness connector and the Electronic Overhead Module harness connector.

Is the resistance below 2.0 ohms?

Yes

- Go To 4

No

- Repair the Can B Bus (+) circuit for an open.
- 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 C5 harness connector and the Electronic Overhead Module harness connector.

Is the resistance below 2.0 ohms?

Yes

- Replace the Electronic Overhead Module.
- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- Repair the Can B Bus (-) circuit for an open.
- Perform the BODY VERIFICATION TEST Body Verification Test.