Pinpoint Test
- RETRIEVE THE RECORDED DTCs
FROM THE IPC SELF-TEST
- Using a scan tool, perform the IPC self-test.
Is DTC U0212:00 recorded?
- Yes: REFER to Diagnostic Routine AZ: U0212:00 .
- No: GO to 2 .
- RETRIEVE THE RECORDED DTCs
FROM THE SCCM SELF-TEST
- Using a scan tool, perform the SCCM self-test.
Are any DTCs recorded?
- Yes: For DTC B137F:09, INSTALL a new LH steering wheel switch. REFER to
STEERING WHEEL SWITCH
.
For DTC B137F:11 or DTC B137F:17, GO to 3 .
- No: GO to 3 .
- CHECK THE SCCM OUTPUT AT THE LH STEERING WHEEL SWITCH
- Ignition OFF.
- Disconnect: LH Steering Wheel Switch.
- Ignition ON.
- Measure:
LH Steering Wheel Switch LH Steering Wheel Switch C2998 C2998 Pin Circuit Measurement / Action Pin Circuit 1 - 3 -
Is the voltage approximately 5 volts?
- Yes: INSTALL a new LH steering wheel switch. REFER to STEERING WHEEL SWITCH .
- No: GO to 4 .
- CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT BETWEEN THE LH STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR A SHORT TO GROUND
- Ignition OFF.
- Remove the driver air bag module. REFER to DRIVER AIR BAG MODULE .
- Disconnect: Upper Clockspring C218B.
- Measure:
LH Steering Wheel Switch Ground C2998 Ground Pin Circuit Measurement / Action Pin Circuit 3 - - Ground
Is greater than 10, 000 ohms?
- Yes: GO to 5 .
- No: REPAIR the steering wheel harness message center signal circuit.
- CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT BETWEEN THE LH STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR AN OPEN
- Ignition OFF.
- Measure:
LH Steering Wheel Switch Upper Clockspring C2998 C218B Pin Circuit Measurement / Action Pin Circuit 3 - 14 -
Is the resistance less than 3 ohms?
- Yes: GO to 6 .
- No: REPAIR the steering wheel harness message center signal circuit.
- CHECK THE MESSAGE CENTER SWITCH RETURN CIRCUIT BETWEEN THE LH STEERING WHEEL SWITCH AND THE UPPER CLOCKSPRING FOR AN OPEN
- Measure:
LH Steering Wheel Switch Upper Clockspring C2998 C218B Pin Circuit Measurement / Action Pin Circuit 1 - 8 -
Is the resistance less than 3 ohms?
- Yes: GO to 7 .
- No: REPAIR the steering wheel harness message center return circuit.
- Measure:
- CHECK THE MESSAGE CENTER SWITCH SIGNAL CIRCUIT IN THE CLOCKSPRING FOR AN OPEN
- Measure:
Upper Clockspring Lower Clockspring C218B (Component Side) C218C (Component Side) Pin Circuit Measurement / Action Pin Circuit 14 - 6 -
Is the resistance less than 3 ohms?
- Yes: GO to 8 .
- No: INSTALL a new clockspring. REFER to CLOCKSPRING .
- Measure:
- CHECK THE MESSAGE CENTER SWITCH RETURN CIRCUIT IN THE CLOCKSPRING FOR AN OPEN
- Measure:
Upper Clockspring Lower Clockspring C218B (Component Side) C218C (Component Side) Pin Circuit Measurement / Action Pin Circuit 8 - 9 -
Is the resistance less than 3 ohms?
- Yes: GO to 9 .
- No: INSTALL a new clockspring. REFER to CLOCKSPRING .
- Measure:
- CHECK FOR CORRECT SCCM OPERATION
- Disconnect and inspect all SCCM connectors.
- 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
- Reconnect the SCCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
- Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new SCCM. REFER to REFER to STEERING COLUMN CONTROL MODULE (SCCM) .
- No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.