U110A

U110A-LOST COMMUNICATION WITH SCM - CAN C (STEERING ANGLE SENSOR)

U110A - Lost Communication With SCM - Can C (Steering Angle Sensor):

WHEN MONITORED
- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- FCM is configured correctly

SET CONDITION
Bus messages not received from the SCM (steering angle sensor or SAS) for approximately 2 to 5 seconds.

POSSIBLE CAUSES
- CAN B or CAN C BUS circuits open or shorted
- DTCs related to battery voltage, ignition, or VIN messages
- FCM not configured correctly
- Steering angle sensor
- Steering angle sensor power and ground
- Module that set this DTC

Diagnostic Test

1. VERIFY DTC IS ACTIVE

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

With the scan tool, read active DTCs.

Q: Is this DTC active?

YES: Go To 2
NO: Refer to the Stored Lost Communication test procedure. Refer to Body Control Systems. Stored Lost Communication DTCs
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

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

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

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

YES: Diagnose and repair the DTC.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. VERIFY THAT THE SCM (SAS) IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select Network Diagnostics.
Verify that the SCM (SAS) is active on the bus.

Q: Is the SCM (SAS) active on the bus?

YES: Go To 4
NO: Refer to Diagnosis By Symptom for No Response diagnostic procedures. Manufacturer Code Charts
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.

Q: Is there more than one module with active DTCs "Logged Against" the SCM (SAS)?

YES: Replace/update the Steering Angle Sensor (internal to the clockspring).
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace/update the module that set this DTC.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test