Pinpoint Test Q: DTC C1998 - Module Calibration Not Complete

WARNING: This page is about a different car, the 2004 Lincoln Aviator. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The stability assist lamp will flash when a system calibration is required. Calibration is required after certain DTCs are cleared.

NOTE: Make sure the vehicle is not on a hoist and is sitting on level ground before performing stability assist module calibration.

Q1 CHECK FOR DTCs

Connect the diagnostic tool.
Key in ON position.
Using the recorded results from the SJB self-test:
Is any other DTC retrieved with C1998?

Yes

GO to the appropriate PINPOINT TEST A for the DTC.

Some of the pinpoint tests recommend ABS module calibration prior to any further diagnostics; in this case, GO to Q2.

GO to Q2.

Q2 ABS MODULE CALIBRATION

Connect the diagnostic tool.
Start the engine.

NOTE: Be sure to rotate the steering wheel lock-to-lock during the calibration of the ABS system.

Carry out the ABS module calibration per the diagnostic tool instructions.
Did the calibration complete for all of the stability assist sensors; and did the stability assist lamp stop flashing and go off?

Yes

GO to Q3.

GO to Q4.

Some concerns will cause the calibration not to complete. If sent here from another pinpoint test, RETURN to that pinpoint test for further diagnostics.

Q3 CLEAR DTC C1998

NOTE: Clear DTC C1998 after completing the calibration.

Connect the diagnostic tool.
Key in ON position.
Clear the DTC.
Did the DTC clear?

Yes

TEST DRIVE the vehicle. REPEAT the self-test.

If sent here from another pinpoint test, RETURN to that pinpoint test for further diagnostics.

GO to Q4.

Q4 MONITOR THE STEERING POSITION SENSOR PIDS

Key in ON position.
Monitor the ABS module steering position sensor PIDS while rotating the steering wheel clockwise and counterclockwise.
Are the two steering position sensor PID values switching as the wheel rotates?

Yes

Go To PINPOINT TEST H

Go To PINPOINT TEST G