U1106

U1106-CAN C SIGNAL MISSING





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
A CAN C Bus module detects a short in either CAN C Bus circuit.





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.

Turn the ignition on.
With the scan tool, record and erase active DTC's.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active DTC's.
Does the scan tool display U1106-CAN C SIGNAL MISSING 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. ANTILOCK BRAKE MODULE - INTERNAL SHORT
Turn the ignition off.
Disconnect the Antilock Brake Module harness connector.
Turn the ignition on.
With the scan tool, record and erase active DTC's.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active active DTC's.
Does the scan tool display U1106-CAN C SIGNAL MISSING as active?

Yes

- Go to 3

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Antilock Brake Module.
- Perform the ABS VERIFICATION TEST - VER 1. ABS Verification Test

3. POWERTRAIN OR ENGINE CONTROL MODULE - INTERNAL SHORT
Turn the ignition off.
Disconnect the Powertrain or Engine Control Module C1 harness connector.
Turn the ignition on.
With the scan tool, record and erase active DTC's.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active DTC's.
Does the scan tool display U1106-CAN C SIGNAL MISSING as active?

Yes

- Go to 4

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Powertrain or Engine Control Module.
- Perform the appropriate POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

4. ALL WHEEL DRIVE CONTROL (AWD) MODULE - INTERNAL SHORT
Turn the ignition off.
Disconnect the AWD Module harness connector.
Turn the ignition on.
With the scan tool, record and erase active DTC's.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active DTC's.
Does the scan tool display U0001-CAN C BUS as active?

Yes

- Go to 5

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the All Wheel Drive Control (AWD) Module.
- Perform the appropriate VERIFICATION TEST. Verification Tests

5. STEERING CONTROL MODULE (SAS) - INTERNAL SHORT
Turn the ignition off.
Disconnect the Steering Control Module (SAS) harness connector.
Turn the ignition on.
With the scan tool, record and erase active DTC's.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active DTC's.
Does the scan tool display U1106-CAN C SIGNAL MISSING as active?

Yes

- Go to 6

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Steering Control Module (SAS).
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

6. (D65) CAN C BUS (+) CIRCUIT SHORTED TO VOLTAGE




Turn the ignition off.
Disconnect the TIPM C2 harness connector.
Turn the ignition on.
Measure the voltage between the (D65) CAN C Bus (+) circuit and ground.
Is there any voltage present?

Yes

- Repair the (D65) CAN C Bus (+) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go to 7

7. (D64) CAN C BUS (-) CIRCUIT SHORTED TO VOLTAGE




Measure the voltage between the (D64) CAN C Bus (-) circuit and ground.
Is there any voltage present?

Yes

- Repair the (D64) CAN C Bus (-) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go to 8

8. (D65) CAN C BUS (+) CIRCUIT SHORTED TO GROUND




Turn the ignition off.
Measure the resistance between ground and the (D65) CAN C Bus (+) circuit.
Is any resistance present?

Yes

- Repair the (D65) CAN C Bus (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go to 9

9. (D64) CAN C BUS (-) CIRCUIT SHORTED TO GROUND




Measure the resistance between ground and the (D64) CAN C Bus (-) circuit.
Is any resistance present?

Yes

- Repair the (D64) CAN C Bus (-) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go to 10

10. (D65) CAN C BUS (+) CIRCUIT SHORTED TO (D64) CAN C BUS (-) CIRCUIT




Measure the resistance between the (D65) CAN C Bus (+) circuit and the (D64) CAN C Bus (-) circuit.
Is any resistance present?

Yes

- Repair the (D65) CAN C Bus (+) circuit for a short to the (D64) CAN C Bus (-) circuit.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the module that set this DTC.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test.