Diagnostic Routine C

Diagnostic Routine C

Diagnostic Overview

The Cruise Control Switch Is Inoperative Or Does Not Operate Correctly

Refer to Wiring Diagram Set 31 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Steering Wheel Switch Function .

DTC Fault Trigger Conditions

Pinpoint Test

1. CHECK THE CRUISE CONTROL SWITCH

1. Ignition ON.

2. Using a scan tool, view the SCCM (Steering Column Control Module) PIDs (Parameter Identifications).

3. Press each cruise control switch while monitoring the cruise control switch PID (Parameter Identification) SCCS.

Does the PID (Parameter Identification) value agree with the switch position?

2. CHECK FOR VOLTAGE TO THE CRUISE CONTROL SWITCHES

1. Ignition OFF.

2. Remove the driver air bag module. REFER to Driver Air Bag Module .

3. Disconnect: LH (Left Hand) Steering Wheel Switch.

4. Ignition ON.

5. Measure:

Are the voltages approximately 5 volts?

3. CHECK FOR VOLTAGE TO THE CLOCKSPRING

1. Ignition OFF.

2. Disconnect: Clockspring C218B.

3. Ignition ON.

4. Measure:

Are the voltages approximately 5 volts?

4. CHECK FOR VOLTAGE AT THE SCCM (Steering Column Control Module)

1. Ignition OFF.

2. Remove the clockspring. REFER to Clockspring .

3. Ignition ON.

4. Measure:

Are the voltages approximately 5 volts?

5. CHECK FOR CORRECT SCCM (Steering Column Control Module) OPERATION

1. Disconnect and inspect all the SCCM (Steering Column Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

3. Reconnect the SCCM (Steering Column Control Module) connectors and make sure they are seated correctly.

4. Connect all disconnected connectors.

5. Install the driver air bag module. REFER to Driver Air Bag Module .

6. Operate the system and determine if the concern is still present.

Is the concern still present?