Operation CHARM: Car repair manuals for everyone.

Ground Circuits Testing


Before checking the ground circuit from the faulty component all the way to the ground stud, check the circuit from the splice pack to ground by testing some of the other subsystems grounded by the same splice pack. If the other subsystems function properly, it is most likely that the path from the splice pack to ground is good (or at least one of the paths is good with redundantly grounded splice packs).

Rear Body Splice Pack

Location: Above left rear shock tower.

The rear body splice pack provides a ground path for the rear body, decklid, and hatch harnesses. If one of the following systems is operating normally, the ground circuit is most likely good.

^ License, CHMSL, cargo lamps

^ Fuel pump

^ Washer pump (Wagon)

Check for OPENS/SHORTS.

Repair as needed.

If this component is good go to the next item indicated on the "Complaint-Condition" chart.


Circuit 5SOAS

Location: Connects rear body splice pack cavity A to I/P chassis ground ring terminal.

Type: Black 14 gage wire

Function: This circuit provides ground for the left rear body ground splice pack.

Check for OPENS/SHORTS.

Repair as needed.

If this component is good, go to the next item indicated on the "Complaint-Condition" chart.


Circuit 550AT

Location: Connects cargo lamp connector cavity B to left rear body ground splice pack cavity H.

Type: Black 22 gage wire

Function: This circuit provides ground for the cargo lamp

Check for OPENS/SHORTS.

Repair as needed.

If this component is good, go to the next item indicated on the "Complaint-Condition" chart.