Pinpoint Test I: DTCs C0051:16 And C0051:17

Steering Column Switches

Pinpoint Test I: DTCs C0051:16 And C0051:17

Normal Operation

The Steering Column Control Module (SCCM) continuously monitors the voltage supplied to the steering wheel rotation sensor (also known as the steering wheel position sensor). If voltage outside of defined limits is detected by the SCCM (Steering Column Control Module), the applicable DTC sets.

- DTC C0051:16 (Steering Wheel Position Sensor: Circuit Voltage Below Threshold)- If the SCCM (Steering Column Control Module) detects voltage to the steering wheel rotation sensor below 10 volts this DTC sets.

- DTC C0051:17 (Steering Wheel Position Sensor: Circuit Voltage Above Threshold)- If the SCCM (Steering Column Control Module) detects voltage to the steering wheel rotation sensor above 15.5 volts this DTC sets.

This pinpoint test is intended to diagnose the following:

- Steering wheel rotation sensor

PINPOINT TEST I : DTCs C0051:16 AND C0051:17

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

I1 CHECK THE SCCM (Steering Column Control Module) DTCs

- Review the SCCM (Steering Column Control Module) DTCs retrieved and recorded during Inspection and Verification.

Is DTC B119D:16 and/or B119D:17 present?

Yes
DIAGNOSE DTCs B119D:16 and B119D:17 before diagnosing DTCs C0051:16 or C0051:17.

For DTC B119D:16, GO to Pinpoint Test J. Pinpoint Test J: DTC B119D:16

For DTC B119D:17, GO to Pinpoint Test K. Pinpoint Test K: DTC B119D:17
No
GO to I2.

I2 CHECK THE STEERING WHEEL ANGLE SENSOR STATUS (SW_ANG_SENS) PID

- Enter the following diagnostic mode on the scan tool: DataLogger- SCCM (Steering Column Control Module).

- Monitor the SW_ANG_SENS PID.

Does the PID display CORRECT?

Yes
The condition that caused the DTC to set is not present at this time. CLEAR the DTCs. DRIVE the vehicle for more than 1 minute at a speed greater than 32 km/h (20 mph) and make at least one left turn and one right turn. REPEAT the self-test. If the DTC(s) does not return, RETURN the vehicle to the customer. If the DTC(s) return, GO to I3.
No
If the PID displays FAULT, INSTALL a new steering wheel rotation sensor. REPEAT the self-test. TEST the system for normal operation.

If the PID displays PSCM (Power Steering Control Module) NOT INITIALIZED, GO to I3.

I3 CHECK FOR CORRECT SCCM (Steering Column Control Module) OPERATION

- Ignition OFF.

- Disconnect: All SCCM (Steering Column Control Module) Connectors.

- Check the SCCM (Steering Column Control Module) connectors for:
- corrosion

- damaged pins

- pushed-out pins


- Connect: All SCCM (Steering Column Control Module) Connectors.

- Make sure the SCCM (Steering Column Control Module) connectors are seated correctly, then operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new SCCM (Steering Column Control Module). REFER to Steering Column Control Module (SCCM) . CLEAR the DTCs. TEST the system for normal operation.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.