The steering column lock control module (SCLCM) receives a discrete input from the automatic transmission shift lever and a serial data input from the instrument panel module (IPM). When the shift lever is in the park position, the switch internal to the automatic transmission shift lever closes sending a high input to the SCLCM. The SCLCM compares the serial data input to the discrete input. If the SCLCM receives a column lock enable command from the IPM and the transmission shift select switch park signal circuit is low, DTC B0005 will set.
This diagnostic procedure supports the following DTC:
DTC B0005 In Park Switch
DTC Symptom  | DTC Symptom Descriptor  | 
|---|---|
08  | Park Switch  | 
| • | DTCs B1327 or B1328 are not set as current. | 
| • | The condition must be present for 300 ms. | 
| • | The condition must be present for 5 consecutive ignition cycles. | 
| • | DTC B0005 will set when the SCLCM receives a column lock enable command from the IPM and the transmission shift select switch park signal circuit is low. | 
| • | There is a short to ground or an open in the transmission shift select switch park signal circuit. | 
| • | DTC B0005 is stored in the SCLCM memory. | 
| • | The SCLCM will command the driver information center (DIC) to display the Service Column Lock Now message. | 
| • | The SCLCM no longer detects a malfunction in the transmission shift select park signal circuit. | 
| • | A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present. | 
Step  | Action  | Yes  | No  | 
|---|---|---|---|
Schematic Reference: Column 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  | |
2  | 
 Does the scan tool display OFF?  | Go to Step 3  | System OK  | 
3  | Test the transmission shift select switch park signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?  | Go to Step 6  | Go to Step 4  | 
4  | Inspect for poor connections at the harness connector of the SCLCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?  | Go to Step 6  | Go to Step 5  | 
5  | 
 Important: Perform the setup procedure for the SCLCM. 
 Did you complete the replacement?  | Go to Step 6  | --  | 
6  | 
 Does DTC B0005 reset?  | Go to Step 2  | System OK  |