U0212

U0212-LOST COMMUNICATION WITH SCM (SAS)

For a complete wiring diagram, refer to the wiring information Electrical Diagrams.

- When Monitored:

- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- Set Condition:
If the Final Drive Control Module fails to receive bus messages from the Steering Angle Sensor for approximately 500 ms.





1. VERIFY DTC IS ACTIVE

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

1. Ignition on, engine not running.
2. With the scan tool, read and record DTCs.
3. With the scan tool, read and record Environmental Data (EV Data).
4. With the scan tool, erase DTCs.
5. Cycle the ignition switch.
6. With the scan tool, read DTCs.

Does this DTC reset?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

2. CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs
1. With the scan tool, read all active DTCs from all CAN C Bus modules.

NOTE: Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

Does the scan tool display any active DTCs related to the conditions listed above?

Yes

- Diagnose and repair the DTCs.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

No

- Go To 3

3. VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS
1. With the scan tool, select ECU View.
2. Verify that the Steering Angle Sensor is active on the bus.

Is the Steering Angle Sensor active on the bus?

Yes

- Perform the Stored Lost Communication diagnostic procedure Stored Lost Communication DTCs
- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- Go To 4

4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCs
1. With the scan tool, select Network View and select Advanced.

Is there more than one module with active DTCs "Logged Against" the STEERING ANGLE SENSOR?

Yes

- Replace/update the Steering Angle Sensor.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

No

- Replace the Final Drive Control Module (FDCM).
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.