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 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.
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 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. |
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
Description and Operation
Steering Wheel and Column Description and Operation
Electrical Information Reference:
Scan Tool Reference
Control Module References
Circuit/System Verification
Ignition ON, observe the scan tool Park Position Input while moving the automatic transmission shift lever. The reading should change between In Park and Out of Park.
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 accessory voltage circuit A and ground.
| ⇒ | If the test lamp does not illuminate, test the accessory voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the IPM/ALDL accessory voltage circuit fuse is open, test the signal circuit A
for a short to ground. |
- Verify the scan tool Park Position Input is Out of Park.
| ⇒ | 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 accessory voltage circuit A. Verify the scan tool Park Position Input is In Park.
| ⇒ | 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 accessory voltage 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 accessory voltage 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.
