B4000 Regular Cab 4WD V6-4.0L OHV (1997)
1. Check GEM 18-pin connector, pins 5 (W/Y) and 11 (W/Y) for loose terminals or pins back-out.
2. Does connector check OK?
Step 7
Check power circuit for open.
1. Check pin 11 (W/Y) at 18-pin connector for open.
2. Does circuit check OK?
Step 8
Check GEM ground point.
1. Check pins 14 and 26 at 26-pin connector or pin 18 at 18-pin connector to a known chassis ground.