Diesel Data: Automotive Repair

Test J

Pinpoint Test J: No Power in ACC

Tests J1 - J2:




Tests J3 - J5:






Normal Operation
The ignition switch receives overload protected B+ power from the RBJB fuse 22 (20A) through circuit 30-DA5 (RD/BK). The ignition switch has 4 possible states:
^ OFF
^ ACC
^ RUN
^ START

Possible Causes
^ RBIB fuse 22 (20A)
^ circuit 75-DD1 (YE)
^ circuit 30-BB20 (RD)
^ BIB fuse 13 (5A)
^ tampon switch
^ Instrument Cluster Module (ICM)

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.