Grounds

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).


I/P Splice Pack #1


Location: Taped to harness behind I/P cluster.


The systems grounded by I/P Splice Pack #1 are grounded redundantly with I/P Splice Pact #2 at ground location D (I/P chassis ground). If one of the following systems is operating normally, the ground circuit is most likely good.


^ Perf/Norm switch


^ I/P dimmer


^ Cruise module


^ Headlamp switch


^ Cigar lighter element


Check for OPENS/SHORTS.

Repair as needed.


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


I/P Splice Pack #2


Location: Taped to harness behind I/P cluster.


The systems grounded by I/P Splice Pack #2 are grounded redundantly with I/P Splice Pact #1 at ground location D (I/P chassis ground). If one of the following systems is operating normally, the ground circuit is most likely good.

^ Fuel sensor


^ Park brake switch


^ Wiper motor


^ Radio


Check for OPENS/SHORTS.

Repair as needed.


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


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.


Right Side Forward Lamp Splice Pack


Location: Behind right front headlamp.


The Right Side Forward Lamp Splice Pack provides a ground path for the right side forward lamp harness. If one of the following systems is operating normally, the ground circuit is most likely good.


^ Coolant level switch


^ Washer pump


^ All right side forward lamps Check for OPENS/SHORTS. Repair as needed.


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


Circuit 35OZ

Location: Connects I/P ground splice pack #2 cavity A to the chassis ground ring terminal.


Type: Black 18 gage wire


Function: This is the ground wire for the I/P splice pack #2.


Check for OPENS/SHORTS.

Repair as needed.


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

Circuit 35OY

Location: Connects I/P ground splice pack #1 cavity A to the chassis ground ring terminal.


Type: Black 18 gage wire


Function: This is the ground wire for the I/P splice pack #1.


Check for OPENS/SHORTS.

Repair as needed.


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


Circuit 150Y


Location: Connects right forward lamp splice pack connector cavity K to forward lamp ground ring terminal.


Type: Black 14 gage wire


Function: This is a ground wire for the right forward lamp 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 55OMM


Location: Connects rear body ground splice pack cavity A to left rear body ground ring terminal.


Type: Black 12 gage wire


Function: This is a ground wire for the 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 35ON


Location: Connects instrument panel junction block connector cavity A1 to I/P ground splice pack #1, cavity K.


Type: Black 14 gage wire


Function: This is the ground wire for the flasher module.


Check for OPENS/SHORTS.


Repair as needed.


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

Circuit 550V


Location: Connects decklid inline connector cavity B to rear body ground splice pack cavity D.


Type: Black 22 gage wire


Function: This is the ground wire for the center high-mounted stop lamp.


Check for OPENS/SHORTS.


Repair as needed.


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


Circuit 550NN


Location: Connects left rear turn/stop lamp assembly connector cavity C to rear body ground splice pack cavity E.


Type: Black 16 gage wire


Function: This is the ground wire for the left rear turn/stop lamp assembly.


Check for OPENS/SHORTS.


Repair as needed.


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


Circuit 55OPP


Location: Connects right rear turn/stop lamp connector cavity C ground ring terminal.


Type: Black 16 gage wire


Function: This is the ground wire for the right rear turn/stop lamp.


Check for OPENS/SHORTS.


Repair as needed.


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


Circuit 350K


Location: Connects I/P cluster connector cavity K to I/P ground splice pack #2 cavity C.


Type: Black 22 gage wire


Function: This is the ground wire for the I/P cluster left turn signal.


Check for OPENS/SHORTS.


Repair as needed.


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

Circuit 150P


Function: This is the ground wire for the left front park/turn lamp.


Location: Connects forward lamp in line connector cavity C to underhood junction block connector cavity E5.


Type: Black 20 gage wire


Check for OPENS/SHORTS.


Repair as needed.


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


Circuit 150L


Location: Connects forward lamp inline connector cavity C1 to forward lamp ground splice pack cavity B.


Type: Black 20 gage wire


Function: This is the ground wire for the right front park/turn lamp.


Check for OPENS/SHORTS.


Repair as needed.


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


Circuit 550AE


Location: Connects center high mounted stop lamp connector cavity B to decklid inline connector cavity cavity B.


Type: Black 22 gage wire


Function: This circuit provides ground for the center high mount stop lamp.


Check for OPENS/SHORTS.


Repair as needed.


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