• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Shift Lock Control Solenoid Ground | -- | 1 | -- | -- |
Shift Lock Control Solenoid Voltage | B2705 02 | 1 | 2 | -- |
1. Shift lever will not move from PARK with the brake pedal pressed. 2. Shift lever will move from PARK without pressing on the brake pedal. |
The body control module (BCM) controls the shift lock solenoid by providing battery voltage to the shift lock control solenoid. The BCM utilizes a smart driver to control the voltage supplied to the shift lock solenoid. The smart driver monitors the voltage and current flow of the control circuit.
Automatic Transmission Shift Lock Control Description and Operation
Control Module References for scan tool information
⇒ | If not the specified parameter, refer to Stop Lamps Malfunction. |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If circuit test normal, 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 circuits test normal, replace the BCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Transmission Control Replacement for the 5L40/5L50-E transmission or Transmission Control Replacement for the 6L50/6L80/6L90-E transmission |
• | Control Module References for BCM replacement, setup and programming |