DaimlerChrysler SPRINTER2006 Service Manual page 108

8R - 6 WIPERS/WASHERS
DIAGNOSIS AND TESTING - WIPER &
WASHER SYSTEM
If the wiper motor operates, but the wipers do not
move on the windshield, replace the faulty wiper
linkage module. If the washer pump/motor operates,
but no washer fluid is dispensed on the glass; or, if
the wipers operate, but chatter, lift, or do not clear
the glass, clean and inspect the wiper and washer
system components as required. (Refer to 8 - ELEC-
TRICAL/WIPERS/WASHERS
(Refer to 8 - ELECTRICAL/WIPERS/WASHERS -
INSPECTION). For diagnosis and testing of the
multi-function switch (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING
TION SWITCH - DIAGNOSIS AND TESTING).
Refer to the appropriate wiring information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
The hard wired circuits and components of the
wiper and washer system may be diagnosed and
INTERMITTENT WIPER SYSTEM
CONDITION
WIPERS INOPERATIVE IN
ALL SWITCH POSITIONS
WIPERS INOPERATIVE IN
INTERMITTENT POSITION
AND NO WIPE AFTER
WASH FEATURE
WIPERS INOPERATIVE IN
LOW POSITION AND NO
PULSE FEATURE
- CLEANING)
- EXTERIOR/MULTI-FUNC-
POSSIBLE CAUSES
1. Faulty or missing fuse.
2. Faulty wiper motor ground circuit.
3. Faulty multi-function switch feed
circuit.
4. Faulty multi-function switch.
5. Faulty wiper motor.
1. Faulty wiper relay.
2. Faulty multi-function switch.
3. Faulty intermittent wipe logic cir-
cuit.
1. Faulty low speed circuit.
2. Faulty multi-function switch.
3. Faulty wiper low speed brush.
tested using conventional diagnostic tools and proce-
dures. However, conventional diagnostic methods
may not prove conclusive in the diagnosis of the
intermittent wipe logic circuitry contained within the
fuse block underneath the steering column, the rain
sensor within the base of the rear view mirror on the
windshield, or the rain sensor control module under
the instrument panel.
WARNING: To avoid personal injury or death, on
and
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
1. Test and replace the fuse as required.
2. Test and repair the open ground circuit
as required.
3. Test and repair the open fused ignition
switch output circuit between the fuse and
the multi-function switch as required.
4. Test and replace the multi-function
switch as required.
5. Test and replace the wiper motor as
required.
1. Test and replace the wiper relay as re-
quired.
2. Test and replace the multi-function
switch as required.
3. Replace the steering column fuse block
as required.
1. Test and repair the open low speed cir-
cuit between the multi-function switch and
the wiper motor as required.
2. Test and replace the multi-function
switch as required.
3. Test and replace the wiper motor as
required.
CORRECTION
VA