Test A: No Power in All Ignition Switch Positions
Pinpoint Test A: No Power in All Ignition Switch PositionsRefer to Vehicle/Diagrams, Power Distribution for schematic and connector information.
Normal Operation
The battery junction box (BJB) provides the ignition switch with fused battery power through BJB fuse 7 (60A) along circuit 1050 (LG/VT). The ignition switch then provides power to the central junction box (CJB) through several different circuits depending on the ignition switch position. The ignition switch has 4 possible positions:
^ OFF - No power on any circuit
^ ACC - Power on circuit 297 (BK/LG) to CJB
^ RUN - Power on circuit 687 (GY/YE) to CJB
- Power on circuit 297 (BK/LG) to CJB
- Power on circuit 1499 (PK/LG) to CJB
^ START - Power on circuit 33 (WH/PK) to CJB
- Power on circuit 1499 (PK/LG) to CJB
This pinpoint test is intended to diagnose the following:
^ Wiring, terminals or connectors
^ Fusible link(s)
^ Fuse
^ Ignition switch