Diagnostic Instructions
DTC Descriptor
DTC B0005 08: In Park Switch/Signal Circuit
Circuit/System Description
The steering column lock control module (SCLCM) receives a discrete input from the automatic transmission shift lever and a serial data input from the body control module (BCM). 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 BCM and the transmission shift select switch (park)
signal circuit is low, DTC B0005 will set.
Conditions for Running the DTC
| • | 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. |
Conditions for Setting the DTC
| • | DTC B0005 will set when the SCLCM receives a column lock enable command from the BCM 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. |
Actions Taken When DTC Sets
| • | 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. |
Conditions for Clearing the DTC
| • | 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. |
Reference Information
Schematic Reference
Column Lock Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Steering Wheel and Column Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Park Switch (Auto) in BCM Data while moving the automatic transmission shift lever. The reading should change between Active and Inactive.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the automatic transmission shift lever.
- Ignition ON, verify that a test lamp illuminates between the auxiliary power circuit A and ground.
| ⇒ | If the test lamp does not illuminate, test the auxiliary power circuit for a short to ground or an open/high resistance. If the circuit tests normal and the COLUMN LK MODULE auxiliary power circuit fuse is open, test the signal circuit F for
a short to ground. |
- Verify the scan tool Park Switch (Auto) is Inactive.
| ⇒ | If not the specified value, test the signal circuit F for a short to voltage. If the circuit tests normal, replace the SCLCM. |
- Install a 3A fused jumper wire between the signal circuit terminal F and the auxiliary power circuit A. Verify the scan tool Park Switch (Auto) is Active.
| ⇒ | If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the SCLCM. |
- If all circuits test normal, test or replace the automatic transmission shift lever assembly.
Component Testing
- Ignition OFF, disconnect the harness connector at the automatic transmission shift lever.
- Test for infinite resistance between the signal F and the auxiliary power A with the switch in the open position.
| ⇒ | If not the specified value, replace the automatic transmission shift lever. |
- Test for less than 1 ohm of resistance between the signal F and the auxiliary power A with the switch in the closed position.
| ⇒ | If greater than the specified range, replace the automatic transmission shift lever. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
