Shift interlock problem sounds like . Does your explorer have floor mounted shifter ?
Shift Interlock System
The shift interlock system prevents the shifting from PARK unless the brake pedal is depressed. The shift interlock system consists of a shift lock actuator mounted on the floor shifter. If the ignition switch is in the RUN position, the shift lock actuator is disabled when the brake pedal is depressed.
If the selector lever will not move out of park with the key in the ON position, it will need to be unlocked manually.
Symptom Chart
Condition
Possible Sources
Action
- Shift interlock system does not release/lock correctly
- Shift interlock switch
- Circuit(s)
- Fuse(s):
- Shift lock actuator
- Brake pedal position (BPP) switch
PINPOINT TEST A: SHIFT INTERLOCK SYSTEM DOES NOT RELEASE/LOCK CORRECTLY
Test Step
Result / Action to Take
A1 TEST THE BRAKE LIGHTS
- Apply brake pedal and view brake lights.
- Do brake lights illuminate?
Yes
GO to A7 .
No
GO to A2 .
A2 TEST FUSE F22 (15A)
- Key in OFF position.
- Check fuse: Smart Junction Box (SJB) Fuse F22 (15A).
- Is the resistance less than 5 ohms?
Yes
GO to A4 .
No
GO to A3 .
A3 TEST THE CIRCUIT FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Brake Pedal Position (BPP) Switch.
- Measure the resistance between pin 1 and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to A4 .
No
REPAIR circuit for short to ground. TEST the system for normal operation.
A4 TEST THE CIRCUIT FOR AN OPEN
- Measure the resistance between SJB C2280E-28 and brake pedal position switch connector pin 1.
- Is the resistance less than 5 ohms?
Yes
GO to A5 .
No
REPAIR circuit for open. TEST the system for normal operation.
A5 TEST THE BPP SWITCH
- Measure the resistance of BPP switch while open (OFF) and closed (ON).
- Is the resistance of switch greater than 10,000 ohms while OFF and less than 5 ohms while ON?
Yes
GO to A6 .
No
INSTALL a new switch. TEST the system for normal operation.
A6 TEST THE CIRCUIT FOR A SHORT TO GROUND
- Disconnect: Shift Connector C2008.
- Measure the resistance of pin 8 and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to A7 .
No
REPAIR circuit for short to ground. TEST the system for normal operation.
A7 TEST THE CIRCUIT FOR AN OPEN
- Measure the resistance between shifter C2008-8 and brake pedal position switch connector pin 2.
- Is the resistance less than 5 ohms?
Yes
GO to A8 .
No
REPAIR circuit for open. TEST the system for normal operation.
A8 TEST FOR B+
- Key in ON position.
- Measure the voltage at shifter C2008-1 and ground.
- Is the voltage greater than 10 volts?
Yes
GO to A12 .
No
GO to A9 .
A9 TEST FUSE F20 (10A)
- Key in OFF position.
- Check fuse: Fuse F20 (10A).
- Is the resistance less than 5 ohms?
Yes
GO to A11 .
No
GO to A10 .
A10 TEST THE CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance between shifter C2008-1 and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to A11 .
No
REPAIR circuit for short to ground. TEST the system for normal operation.
A11 TEST THE CIRCUIT FOR AN OPEN
- Measure the resistance between SJB C2280C-12 and the shifter C2008-1.
- Is the resistance less than 5 ohms?
Yes
GO to A12 .
No
REPAIR circuit for open. TEST the system for normal operation.
A12 CHECK THE CIRCUIT FOR AN OPEN
- Measure the resistance between shifter C2008-6 and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new shift lock actuator. TEST the system for normal operation.
No
REPAIR circuit for open. TEST the system for normal operation.