PINPOINT TEST E: DTCs C1278 AND C1963

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

NOTE: Overtightening of the Steering Angle Sensor Module (SASM) fasteners may deform or damage the sensor housing, possibly resulting in faulty operation.

NOTE: Make sure that the SASM is mounted securely to the column with 2 fasteners. A loose sensor or missing fastener may result in incorrect sensor operation. Make sure that the sensor connector is mated securely to the harness connector. Before proceeding with electrical testing, make sure that the vehicle battery is fully charged.

E1 CHECK THE SASM FOR DTCs
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - SASM .
- Retrieve and record any SASM DTCs.
- Are any DTCs retrieved?
- Yes: GO to the STEERING ANGLE SENSOR MODULE (SASM) DTC CHART .
- No: If the SASM does not respond to the scan tool, REFER to MODULE CONFIGURATION to diagnose the HS-CAN communications concern.
  If no DTCs were retrieved from the SASM self-test, GO to E2 .
E2 CALIBRATE THE ABS MODULE
- Enter the following diagnostic mode on the scan tool: IVD Initialization Sequence.
- Carry out the IVD Initialization sequence following the scan tool instructions.
- Does the IVD Initialization sequence indicate a fault?
- Yes: DRIVE the vehicle at a speed greater than 40 km/h (25 mph). REPEAT the ABS module self-test. GO to the ABS MODULE DTC CHART to diagnose the DTC retrieved.
- No: GO to E3 .
E3 MONITOR THE SASM PID (SWA POS)
- Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
- Monitor the SWA POS PID while rotating the steering wheel clockwise and counterclockwise very slowly.
- Does the PID move in intervals of 1 degree?
- Yes: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CARRY OUT the ABS module self-test with the brake pedal not applied.
- No: INSTALL a new SASM . REFER to STEERING ANGLE SENSOR MODULE (SASM) . CLEAR the DTCs. CARRY OUT the ABS module self-test with the brake pedal not applied.