Dodge 2000 DURANGO Service Manual page 476

8R - 2 POWER SEAT SYSTEMS
DIAGNOSIS AND TESTING
POWER SEAT SYSTEM
Before any testing of the power seat system is
attempted, the battery should be fully-charged and
all wire harness connections and pins cleaned and
tightened to ensure proper continuity and grounds.
For circuit descriptions and diagrams, refer to 8W-63
- Power Seat in Group 8W - Wiring Diagrams.
With the dome lamp on, apply the power seat
switch in the direction of the failure. If the dome
lamp dims, the seat may be jamming. Check under
and behind the seat for binding or obstructions. If
the dome lamp does not dim, proceed with testing of
the individual components and circuits.
POWER SEAT ADJUSTER AND MOTORS
For circuit descriptions and diagrams, refer to
8W-63 - Power Seat in Group 8W - Wiring Diagrams.
Operate the power seat switch to move all three
seat motors in each direction. The seat should move
in each of the selected directions. If the power seat
adjuster fails to operate in only one direction, move
the adjuster a short distance in the opposite direction
and test again to be certain that the adjuster is not
at its travel limit. If the power seat adjuster still
fails to operate in only one direction, see Power Seat
Switch in the Diagnosis and Testing section of this
group. If the power seat adjuster fails to operate in
more than one direction, proceed as follows:
(1) Check for battery voltage at the fuse in the
Power Distribution Center (PDC). If OK, go to Step
2. If not OK, repair the shorted circuit or component
as required and replace the faulty fuse.
(2) Remove the power seat switch from the seat.
Check for battery voltage at the fused B(+) circuit
cavity of the power seat switch wire harness connec-
tor. If OK, go to Step 3. If not OK, repair the open
circuit to the PDC as required.
(3) Check for continuity between the ground cir-
cuit cavity of the power seat switch wire harness con-
nector and a good
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 power seat motor(s) between the
power seat switch and the motor for shorts or opens.
If the circuits check OK, replace the faulty power
seat adjuster and motors assembly. If the circuits are
not OK, repair the wire harness as required.
POWER SEAT SWITCH
For circuit descriptions and diagrams, refer to
8W-63 - Power Seat in Group 8W - Wiring Diagrams.
ground. There should
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the power seat switch from the power
seat.
(3) Use an ohmmeter to test the continuity of the
power seat switches in each position. See the Power
Seat Switch Continuity chart (Fig. 1). If OK, see
Power Seat Adjuster and Motors in the Diagnosis
and Testing section of this group. If not OK, replace
the faulty power seat switch unit.
SWITCH
POSITION
OFF
VERTICAL
UP
VERTICAL
DOWN
HORIZONTAL FORWARD
HORIZONTAL AFT
FRONT TILT UP
FRONT TILT
DOWN
REAR TILT
UP
be
REAR TILT
DOWN
Fig. 1 Power Seat Switch Continuity
POWER SEAT SWITCH
CONTINUITY
BETWEEN
B & N, B & J, B & M,
B & E, B & L, B & K
A & E, A & M, B & N,
B & J
A & J, A & N, B & M,
B & E
A & L, B & K
A & K, B & L
A & M, B & N
A & N, B & M
A & E, B & J
A & J, B & E
DN