Diagnostic Routine AD

Diagnostic Routine AD

Diagnostic Overview

The Message Center Is Not Operating Correctly

Refer to Wiring Diagram Set 60 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Overview and REFER to Steering Wheel Switch - Message Center .

SCCM (Steering Column Control Module) DTC Fault Trigger Conditions






Pinpoint Test

1. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE IPC (Instrument Panel Cluster) SELF-TEST

1. Using a scan tool, perform the IPC (Instrument Panel Cluster) self-test.

Is DTC (Diagnostic Trouble Code) U0212:00 recorded?








2. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE SCCM (Steering Column Control Module) SELF-TEST

1. Using a scan tool, perform the SCCM (Steering Column Control Module) self-test.

Are any DTCs (Diagnostic Trouble Codes) recorded?








3. CHECK THE SCCM (Steering Column Control Module) OUTPUT AT THE LH (Left Hand) STEERING WHEEL SWITCH

1. Ignition OFF.

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

3. Ignition ON.

4. Measure:





Is the voltage approximately 5 volts?








4. CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT BETWEEN THE LH (Left Hand) STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR A SHORT TO GROUND

1. Ignition OFF.

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

3. Disconnect: Upper Clockspring C218B.

4. Measure:





Is greater than 10,000 ohms?








5. CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT BETWEEN THE LH (Left Hand) STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR AN OPEN

1. Ignition OFF.

2. Measure:





Is the resistance less than 3 ohms?








6. CHECK THE MESSAGE CENTER SWITCH RETURN CIRCUIT BETWEEN THE LH (Left Hand) STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR AN OPEN

1. Measure:





Is the resistance less than 3 ohms?








7. CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT IN THE CLOCKSPRING FOR AN OPEN

1. Measure:





Is the resistance less than 3 ohms?








8. CHECK THE MESSAGE CENTER SWITCH RETURN CIRCUIT IN THE CLOCKSPRING FOR AN OPEN

1. Measure:





Is the resistance less than 3 ohms?








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

1. Disconnect and inspect all 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. Make sure they seat and latch correctly.

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

Is the concern still present?