Grand Cherokee 2WD V8-4.7L VIN J (2004)
Auxiliary Power Outlet: Testing and Inspection
Relay Circuit Test
DIAGNOSIS AND TESTING - RELAY CIRCUIT TEST
1. The relay common feed terminal cavity (30) of the junction block is connected to battery voltage and should be hot at all times. Check for battery
voltage at the fused B(+) circuit cavity in the junction block receptacle for the cigar lighter relay. If OK, go to Step 2. If not OK, repair the fused
B(+) circuit to the Power Distribution Center (PDC) fuse as required.
2. The relay normally closed terminal (87A) is connected to terminal 30 in the de-energized position, but is not used for this application. Go to Step
3.
3. The relay normally open terminal (87) is connected to the common feed terminal (30) in the energized position. This terminal supplies battery
voltage to the fused B(+) fuse in the junction block that feeds the cigar lighter when the relay is energized by the ignition switch. There should be
continuity between the junction block cavity for relay terminal 87 and the fused B(+) fuse in the junction block at all times. If OK, go to Step 4. If
not OK, repair the open fused B(+) circuit to the junction block fuse as required.
4. The coil ground terminal (85) is connected to the electromagnet in the relay. It receives battery feed to energize the cigar lighter relay when the
ignition switch is in the Accessory or On positions. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition
switch output (acc/ run) circuit cavity for relay terminal 85 in the junction block receptacle for the cigar lighter relay. If OK, go to Step 5. If not
OK, repair the open fused ignition switch output (acc/run) circuit to the ignition switch as required.
5. The coil battery terminal (86) is connected to the electromagnet in the relay. The junction block cavity for this terminal should have continuity to
ground at all times. If not OK, repair the open ground circuit to ground as required.
