The ignition key cannot be returned to the OFF position or the ignition key can be turned to the OFF position when the selector lever is not in P | Wiring, terminals or connectors Ignition lock cylinder Key removal inhibit solenoid (part of the ignition switch) Park detect switch (part of the selector lever) Selector lever cable Mechanical damage to the selector lever, selector lever cable or selector lever knob | REFER to: Steering Wheel and Column Electrical Components . |
The PRNDL indicator does not illuminate P | Wiring, terminals or connectors PCM concern IPC Park detect switch (part of the selector lever assembly) | REFER to: INSTRUMENTATION, MESSAGE CENTER AND WARNING CHIMES . |
DIAGNOSIS AND TESTING > EXTERNAL CONTROLS > PINPOINT TESTS
DTCs B1319:11, B1319:15
Refer to Shift Interlock for schematic and connector information.
Normal Operation and Fault Conditions
The BCM provides power to the Brake Shift Interlock Actuator (BSIA). When the BCM receives a brake pedal applied input, voltage is applied to the brake shift interlock actuator. When the actuator is energized, the plunger is pulled inward allowing the selector lever to move from the park position.
DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
B1319:11 | Brake Shift Interlock Output Circuit Short To Ground | Short to ground in the Brake Shift Interlock Actuator (BSIA) circuitry. |
B1319:15 | Brake Shift Interlock Output Circuit Short To Battery or Open | Short to power or open in the Brake Shift Interlock Actuator (BSIA) circuitry. |
Possible Sources
Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
Brake Shift Interlock Actuator (BSIA)
BCM
DIAGNOSIS AND TESTING > EXTERNAL CONTROLS > PINPOINT TESTS > PINPOINT
Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.