Diagnostic Instructions
DTC Descriptor
DTC B2515: Steering Column Lock Solenoid/Motor Feedback Circuit
Circuit/System Description
The steering column lock control module (SCLCM) controls the column lock motor using an internal lock relay, an internal unlock relay, and an internal lock enable relay. The lock and unlock relays provide a low input to the column lock motor. When
the column needs to be locked the lock enable relay will energize the lock relay, which provides a high input to the lock side of the motor, energizing the motor to lock the steering column.
When the SCLCM receives the low input from the instrument panel module (IPM) the internal lock enable relay is energized and provides a high input to the lock side of the column lock motor. The unlock side of the column lock motor is grounded through
the internal unlock relay within the SCLCM. The column lock motor will send an input back to the SCLCM indicating the motor is energized for the locked position. This results in the locking of the steering column.
Conditions for Running the DTC
| • | DTCs B0005, B1000, B1327, B1328, or B2907 are not set as current. |
Conditions for Setting the DTC
| • | This DTC will set when the SCLCM checks for a valid feedback signal, but the feedback is not what was expected. This indicates a failure in the motor feedback switch/motor circuit. |
| • | The condition must occur 5 consecutive times for this DTC to set. |
Actions Taken When the DTC Sets
| • | DTC B2515 is stored in the SCLCM memory. |
| • | The SCLCM will command the driver information center (DIC) to display the Service Column Lock Now message. |
Conditions for Clearing the DTC
| • | The SCLCM no longer detects a malfunction in the motor feedback switch/motor circuit. |
| • | A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present. |
Reference Information
Schematic Reference
Column Lock Schematics
Connector End View Reference
Description and Operation
Steering Wheel and Column Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
Circuit/System Testing
- Ignition OFF, steering wheel locked, disconnect the X2 connector at the SCLCM.
- Test for 450-500 ohms between the steering column lock signal circuit terminal A and the ground circuit terminal B.
| ⇒ | If outside the specified range, replace the steering wheel theft deterrent lock. |
- Reconnect the steering wheel theft deterrent lock.
- Ignition ON, steering wheel unlocked, disconnect the X2 connector at the SCLCM.
- Test for 250-350 ohms between the steering column lock signal circuit terminal A and the ground circuit terminal B.
| ⇒ | If outside the specified range, replace the steering wheel theft deterrent lock. |
- Test for infinite resistance between the steering column unlock circuit terminal C and the signal circuit terminal A.
| ⇒ | If less than the specified range, replace the steering wheel theft deterrent lock. |
- Test for infinite resistance between the steering column lock circuit terminal D and the signal circuit terminal A.
| ⇒ | If less than the specified range, replace the steering wheel theft deterrent lock. |
- If all circuits test normal, replace the SCLCM.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
