Diesel Data: Automotive Repair

Test A: The Ignition Switch Is Inoperative

Pinpoint Test A: The Ignition Switch Is Inoperative

Test A1-A2:





Normal Operation
The ignition switch receives overload protected B+ power from the battery junction box (BJB) fuse 34 (30A) through circuit 1715 (RD). The ignition switch has 4 possible states:
^ OFF
^ ACC
^ RUN
^ START

Possible Causes
^ BJB fuse 34 (30A)
^ circuit 1715 (RD) open or short to ground
^ ignition switch
^ BJB