Sky L4-2.0L Turbo (2008)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for Scan Tool Information
Circuit/System Verification
1. Ignition ON, while pressing the brake pedal, observe the scan tool Brake Lamp Cmd. parameter. The reading should be ON with the brake pedal
pressed.
‹› If not the specified parameter, refer to Stop Lamps Malfunction (See: Lighting and Horns/Testing and Inspection/Symptom Related
Diagnostic Procedures/Stop Lamps Malfunction) .
2. Ignition ON, observe the scan tool BCM BTSI Solenoid Command parameter. The parameter should change from ON to OFF when the brake
pedal is depressed.
‹› If not the specified parameter, replace the BCM.
3. Press the brake pedal, the vehicle operator should be able to move the shifter lever out of the park position.
Circuit/System Testing
1. Ignition ON, while pressing the brake pedal, observe the scan tool Brake Lamp Cmd. parameter. The reading should be ON with the brake pedal
pressed.
‹› If not the specified parameter, refer to Stop Lamps Malfunction (See: Lighting and Horns/Testing and Inspection/Symptom Related
Diagnostic Procedures/Stop Lamps Malfunction) .
2. Ignition OFF, disconnect the harness connector at the automatic transmission shift lock actuator.
3. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal B and ground.
‹› If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal A and ground.
5. Ignition ON, command the scan tool BCM brake to shift control output control ON and OFF. The test lamp should turn ON and OFF as
commanded.
‹› If the test lamp is always ON, test the control circuit for a short to voltage. If all circuits test normal, test or replace the BCM.
‹› If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If all circuits test normal, test or replace
the BCM.
6. If all circuits test normal, test or replace the shift lock actuator.
Component Testing
1. Install a 10A fused jumper wire between the control circuit terminal A and 12 volts. Install a jumper wire between the ground circuit terminal B
and ground.
2. Listen for the soleniod to turn ON and OFF.
‹› If the function does not perform as specified, replace the shift lock actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests and Procedures) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM replacement, setup and programming
