• | 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 or 1 | 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 controls the voltage supplied to the shift lock solenoid.
If the automatic transmission shift lock control circuit is shorted to B +, the A/T shift lock solenoid will be inoperative. The vehicle will shift out of PARK without depressing the brake pedal.
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 all circuits 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 all circuits test normal, replace the BCM. |
⇒ | If the function does not perform as specified, replace the shift lock actuator. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup and programming |