Circuit Description
The steering column lock control module (SCLCM) receives an input from the body control module (BCM) enable relay. When the BCM goes to the off power mode then a low input is sent to the SCLCM.
DTC Descriptor
This diagnostic supports the following DTC:
DTC B2907 Steering Column Lock Solenoid/Motor Enable Relay Circuit
Conditions for Running the DTC
| • | DTCs B1327 or B1328 are not set as current. |
| • | The condition must be present for 300 ms. |
Conditions for Setting the DTC
When the SCLCM is locking the column but no input has been received on the steering column lock enable relay circuit from the BCM.
Action Taken When the DTC Sets
| • | Stores a DTC B2907 in the SCLCM memory. |
| • | Stores a DTC B2907.01 in the BCM memory for a short to battery in the steering column lock enable relay circuit. |
| • | Stores a DTC B2907.06 in the BCM memory for an open or a short to ground in the steering column lock enable relay circuit. |
| • | The SCLCM will command the Service Column Lock Now to turn ON in the driver information center (DIC). |
Conditions for Clearing the MIL/DTC
| • | When the SCLCM is locking the column and ground has been received on the steering column lock enable relay circuit for 300 ms. |
| • | A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present. |
| • | Use a scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Column/Ignition Lock Schematics Connector End View Reference: Steering Wheel and Column Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the scan tool display Disabled? | Go to Step 5 | Go to Step 3 |
3 | Observe the Column Lock Relay Signal parameter in the data list for the body control module (BCM) with the scan tool. Does the scan tool display Off? | Go to Step 6 | Go to Step 4 |
4 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
5 | Inspect for poor connections at the harness connector of the SCLCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
6 | Repair an open, a short to ground, or a short to battery in the steering column lock enable relay circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 9 | -- |
7 | Replace the BCM. Refer to Body Control Module Replacement . Did you complete the replacement? | Go to Step 9 | -- |
8 |
Important: Perform the setup procedure for the SCLCM.
Did you complete the replacement? | Go to Step 9 | -- |
9 |
Does DTC B2907 reset? | Go to Step 2 | System OK |
