Pinpoint Test C : The Power Adjustable Steering Column Operates In One Second Intervals When Using The Steering Column Control Switch (Jog Mode): Notes
Diagnostic Overview
Normal Operation and Fault Conditions
The SCCM monitors the position of the adjustable steering column using of Hall-effect type rotation sensors that are integral to the tilt and telescoping motors. The adjustable steering column tilt and telescopic motors can be serviced separately from the steering column.
The SCCM sends a reference voltage along the sensor feed circuit through the Hall-effect sensor and back to the SCCM through a shared signal return circuit. The sensors provide a digital signal used by the SCCM to calculate the position of the steering column in relation to the full forward/rearward and full up/down positions. The SCCM uses this signal to store and recall memory positions, to carry out the easy entry/exit operations and to make sure the adjustable steering column tilt and telescopic motors do not stall against the steering column end of travel.
If an adjustable steering column tilt or telescopic motor sensor DTC sets (or if either of the sensor circuits become open), the SCCM does not recall a programmed memory position or automatically position the steering column during the easy entry/exit operations. The affected steering column motor operates in jog mode. Jog mode allows limited operation of the affected steering column motor using only the steering column control switch. When the steering column control switch is operated in jog mode, the steering column moves in the desired direction for one second, then stops regardless of the length of time the switch is actually activated. The steering column control switch must be released, then activated again in order to move the steering column for an additional second.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1C33:11 | Steering Column Tilt Feedback Signal: Circuit Short to Ground | This DTC sets when the SCCM senses the adjustable steering column tilt motor feedback sensor signal is below 1.5 volts. This may be caused by a short to ground in the sensor signal circuit. |
| B1C33:12 | Steering Column Tilt Feedback Signal: Circuit Short to Battery | This DTC sets when the SCCM senses the adjustable steering column tilt motor feedback sensor signal is above 7 volts. This may be caused by a short to voltage in the sensor signal circuit. |
| B1C35:11 | Steering Column Telescope Feedback Signal: Circuit Short to Ground | This DTC sets when the SCCM senses the adjustable steering column telescopic motor feedback sensor signal is below 1.5 volts. This may be caused by a short to ground in the sensor signal circuit. |
| B1C35:12 | Steering Column Telescope Feedback Signal: Circuit Short to Battery | This DTC sets when the SCCM senses the adjustable steering column telescopic motor feedback sensor signal is above 7 volts. This may be caused by a short to voltage in the sensor signal circuit. |
Possible Sources
- Wiring, terminals or connectors
- Adjustable steering column tilt motor
- Adjustable steering column telescopic motor
- SCCM
Visual Inspection and Diagnostic Pre-checks
- Wiring, terminals or connectors.