Circuit Description
The tilt/telescoping steering column module (SCCM) receives ground inputs from contacts inside the tilt/telescoping switch. The SCCM then supplies battery voltage to the tilt motor UP or DOWN circuit, or, the telescope motor IN or OUT circuit depending on which direction of movement is requested. Both motors are reversible and the circuits are simply reversed to accomplish movement in opposite directions.
Conditions for Running the DTC
The SCCM checks the tilt and telescope motors for excessive current every 300 milliseconds if there is no code B1327 currently set.
Conditions for Setting the DTC
The SCCM sets DTC B2891 any time it detects the motor current is out-of-range for 100 milliseconds.
Action Taken When the DTC Sets
When DTC B2891 is set as current, the steering column tilt/telescoping module (SCCM) enables the affected motor for manual and memory recall positioning. A reoccurrence of the over current condition causes the affected motor to stop.
Conditions for Clearing the DTC
| • | The SCCM detects that motor current is no longer present. |
| • | Use the On-Boards clearing DTCs feature. |
| • | Use a scan tool. |
Diagnostic Aids
Since most occurrences of this DTC may be caused by excessive current during cold weather conditions, review the circumstances with the customer to verify the conditions under which the DTC set.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Tilt/Telescoping Steering Column Diagnostic System Check? | -- | Go to Tilt/Telescoping Steering Column Diagnostic System Check | |
2 |
Does the Motor Current parameter display more than the specified value? | 7 amps | ||
3 | With the scan tool, observe the Motor Current parameter while operating the switch from the Idle position to the In and Out positions. Does the Motor Current parameter display more than the specified value? | 7 amps | Go to Diagnostic Aids | |
4 |
Important: Perform the set up procedure for the tilt/telescoping steering column control module. Replace the tilt actuator. Refer to Tilt Motor Assembly - Disassemble - Off Vehicle . Did you complete the replacement? | -- | -- | |
5 |
Important: Perform the set up procedure for the tilt/telescoping steering column control module. Replace the telescope actuator. Refer to Telescope Motor Assembly - Disassemble - Off Vehicle . Did you complete the replacement? | -- | -- | |
6 |
Does the DTC reset? | -- | System OK |
