Jeep 1997 Grand Cherokee Service Manual page 576

8R - 4 POWER SEAT SYSTEMS
DIAGNOSIS AND TESTING (Continued)
Fig. 1 Power Seat Switch Continuity
(2) Remove the power seat switch as described in
this group. Check for battery voltage at the fused
B(+) circuit cavity of the switch wire harness connec-
tor. If OK, go to Step 3. If not OK, repair the open
circuit to the junction block as required.
(3) Check for continuity between the ground cir-
cuit cavity of the switch wire harness connector and
a good ground. There should be continuity. If OK, go
to Step 4. If not OK, repair the open circuit to ground
as required.
(4) Test the power seat switch as described in this
group. If the switch tests OK, check the wire harness
for the inoperative motor between the switch and the
motor for shorts or opens. If the circuits check OK,
replace the faulty power seat adjuster and motors
Fig. 2 Power Lumbar Switch Continuity
assembly. If the circuits are not OK, repair the wire
harness as required.
POWER RECLINER ADJUSTER AND MOTOR
The tests below apply to a power seat system with-
out the memory system option. For testing of the
power seats with the memory system, refer to the
proper Body Diagnostic Procedures manual. For cir-
cuit descriptions and diagrams, refer to 8W-63 -
Power Seat in Group 8W - Wiring Diagrams.
Operate the power seat switch to move the power
recliner in each direction. The recliner should move
in both directions. If the power recliner fails to oper-
ate in only one direction, move the seat a short dis-
tance in the opposite direction and test again to be
certain the adjuster is not at its travel limit. If the
power recliner still fails to operate in only one direc-
tion, see the diagnosis for the Power Seat Switch in
this group. If the power recliner fails to operate in
either direction, proceed as follows:
(1) Test the circuit breaker in the junction block as
described in this group. If OK, go to Step 2. If not
OK, replace the faulty circuit breaker.
(2) Remove the power seat switch as described in
this group. Check for battery voltage at the fused
B(+) circuit cavity of the switch wire harness connec-
tor. If OK, go to Step 3. If not OK, repair the open
circuit to the junction block as required.
(3) Check for continuity between the ground cir-
cuit cavity of the switch wire harness connector and
a good ground. There should be continuity. If OK, go
to Step 4. If not OK, repair the open circuit to ground
as required.
ZG