Troubleshooting Hints - Brake Transaxle Shift Interlock

1. The Shift Lever should lock in PARK with the ignition key in the RUN position and the Brake Pedal released. If the Shift Lever can be moved from the PARK position, with the key in the RUN position and without depressing the Brake Pedal, CHECK mm Signal operation. If the mm Signals do not operate correctly, check TURN/BU Fuse 16 to see if it is open (the Turn Signal Flasher is on the same circuit as BTSI). If the fuse is open, LOCATE and REPAIR source of the overload. REPLACE the fuse. If the fuse is good (Turn Signals operate correctly), CONTINUE with diagnostics.
- CHECK for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove GOOD in a Continuity/Voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
- CHECK for proper installation of aftermarket electronic equipment which may affect the integrity of other systems. Refer to "General Troubleshooting Procedures". Diagnostic Aids
2. With the ignition key in the OFF position, the Shift Lever should not move from the PARK position. If the lever moves, the problem may be with the BTSI Solenoid, or the Shift Linkage itself. If the shift linkage is binding, refer to the Transmission Section. If the shift linkage does not appear to be binding, continue with BTSI Diagnostics.
3. If the Park/Neutral Position (PNP) Switch needs adjustment or replacement, refer to Computers and Control Systems. Computers and Control Systems