Dodge 2000 DURANGO Service Manual page 391

DN
DIAGNOSIS AND TESTING (Continued)
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Check the fuses in the junction block. If OK, go
to Step 2. If not OK, repair the shorted circuit or
component as required and replace the faulty fuse(s).
(2) Disconnect and isolate the battery negative
cable. Remove the instrument panel lower bezel and
unplug the wire harness connector from the rear win-
dow switch pod. Connect the battery negative cable.
Turn the ignition switch to the On position. Check
for battery voltage at the fused ignition switch out-
put (run) circuit cavity of the rear window switch pod
wire harness connector. If OK, go to Step 3. If not
OK, repair the open circuit to the junction block as
required.
(3) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cav-
ity of the rear window switch pod 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 rear wiper and washer switch continu-
ity. See Wiper Switch and Washer Switch in the
Diagnosis and Testing section of this group for the
procedures. If OK, go to Step 5. If not OK, replace
the faulty rear window switch pod.
(5) Remove the liftgate trim panel and unplug the
rear wiper motor wire harness connector. Connect
the battery negative cable. Check for battery voltage
at the fused B(+) circuit cavity of the rear wiper
motor wire harness connector. If OK, go to Step 6. If
not OK, repair the open circuit to the junction block
as required.
(6) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cav-
ity of the rear wiper motor wire harness connector
and a good ground. There should be continuity. If
OK, go to Step 7. If not OK, repair the open circuit to
ground as required.
(7) Check for continuity between the rear wiper
motor control circuit cavity of the rear wiper motor
wire harness connector and a good ground. There
should be no continuity. If OK, go to Step 8. If not
OK, repair the short circuit as required.
(8) Check for continuity between the rear wiper
motor control circuit cavities of the rear wiper motor
wire harness connector and the rear window switch
GROUP 8M - PASSIVE
STEERING COLUMN,
ground. There should
WIPER AND WASHER SYSTEMS
pod wire harness connector. There should be continu-
ity. If OK, replace the faulty rear wiper motor. If not
OK, repair the open circuit as required.
OR
WASHER SYSTEM
FRONT
The diagnosis found here addresses an inoperative
washer pump or wipe-after-wash feature. If the
washer pump operates, but no washer fluid is emit-
ted from the washer nozzles, be certain to check the
fluid level in the reservoir. Check for ice or other for-
eign material in the reservoir, and for pinched, dis-
connected, broken, or incorrectly routed washer
system plumbing. For circuit descriptions and dia-
grams, refer to 8W-53 - Wipers in Group 8W - Wiring
Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
be
(1) Turn the ignition switch to the On position.
Turn the wiper switch to the Low or High speed posi-
tion. Check whether the wipers operate. If OK, go to
Step 2. If not OK, see Wiper System in the Diagnosis
and Testing section of this group.
(2) Turn the wiper switch to the Off position.
Depress the washer switch. The washer pump should
operate and the wipers should operate for as long as
the washer switch is depressed. The wipers should
continue to operate for about three sweep cycles after
the switch is released before they park. If the wipers
are OK, but the washers are not, go to Step 3. If the
washers are OK, but the wipers are not, go to Step 5.
(3) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Unplug the washer pump wire harness connector.
Measure the resistance between the ground circuit
cavity of the washer pump wire harness connector
and a good ground. The meter should read zero
ohms. If OK, go to Step 4. If not OK, repair the cir-
cuit to ground as required.
(4) Connect the battery negative cable. Turn the
ignition switch to the On position. With the washer
switch depressed, measure the voltage at the washer
switch output circuit cavity of the washer pump wire
harness connector. The meter should read battery
voltage. If OK, replace the faulty pump. If not OK,
repair the open circuit as required.
TO GROUP 8M -
STEERING COLUMN,
8K - 7
PASSIVE
OR