Operation CHARM: Car repair manuals for everyone.

Hall Sensor Power

The Generic Electronic Module (GEM) sends a regulated 12 volts to both front and rear Hall effect sensors.
1. Check at the 16-way Transfer Case motor harness Connector Pins 3 and 7 for approximately 12 volts.
2. If NO voltage exists, check for continuity between GEM Connector C3-Pin 1 and transfer case harness.
3. If continuity exists, check Hall sensor at the 16-way transfer case motor harness Connector Pins 3 or 7.