Ground DODGE RAM 1999 Service Repair Manual

Ram Van & Ram Wagon
1) Place window glass halfway between up and down positions.
Verify glass can be moved slightly from side to side, front to rear,
and up and down. If glass does not move freely, check window glass,
tracks and regulator for sticking or binding. Repair as necessary and
recheck system operation. If glass moves freely, go to next step.
2) Disconnect negative battery cable. Disconnect and remove
power window switch in door with inoperative window. See POWER WINDOW
SWITCH under REMOVAL & INSTALLATION. Connect negative battery cable.
Turn ignition on. Measure voltage between passenger power window
switch wiring harness connector terminal (Tan wire) or driver power
window switch wiring harness connector terminal (Tan wire) and ground.\
See WIRING DIAGRAMS. If battery voltage is not present, repair open
Tan wire as necessary. If battery voltage exists, and inoperative
window is on driver side, go to step 4). If battery voltage exists,
and inoperative window is on passenger side, go to next step.
NOTE: Passenger's power window switch is grounded through driver's
power window switch.
3) Disconnect negative battery cable. Check continuity
between ground and passenger's power window switch harness connector
terminals No. 2 (Brown/White wire) and No. 4 (Violet/White wire). Se\
e
WIRING DIAGRAMS. If continuity exists on both circuits, go to step 5).
If continuity does not exist on either or both circuits, repair open
circuit.
4) Check power window switch. See POWER WINDOW SWITCH under
COMPONENT TESTS. Replace faulty power window switch as necessary. If
switch is okay, go to next step.
5) Using an ohmmeter, check continuity of each circuit
between inoperative power window switch wiring harness connector and
corresponding power window motor wiring harness connector terminal.
See WIRING DIAGRAMS. If continuity does not exist in one or more
circuits, repair open circuit(s) as necessary. Recheck system
operation. If continuity exists in all circuits, power window switch
and switch circuits are okay. Check power window motor. See POWER
WINDOW MOTOR under COMPONENT TESTS.
REMOVAL & INSTALLATION
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION
before disconnecting battery.
DOOR TRIM PANEL
Removal & Installation (Caravan, Town & Country, & Voyager)
1) Using a trim stick, pry courtesy light from door trim.
Disconnect courtesy light connector. Remove door assist handle (if
equipped). Remove door pull cup (if equipped). Remove screws attachin\
g
trim panel to door below map pocket (if equipped). Using a trim stick,\
remove screw cover from switch panel.
2) Remove screws securing switch panel to door trim and
remove panel. Using a trim stick, remove seat/mirror memory switch (if
equipped). Remove screw securing door trim to door panel from behind
inside latch release handle.
3) Disengage clips holding door trim to door frame around
perimeter of panel. Tilt top of trim panel away from door to gain
access to latch linkage. Disengage clip holding linkage rod to inside
latch release handle. Separate linkage rod from latch handle. Remove

MOTOR WILL NOT RUN
Check for blown fuse. Check voltage at motor. Check wiper
switch, ground circuit and wiring.
MOTOR RUNS, BLADES DO NOT MOVE
Check for loose motor crank, disconnected linkage or loose
arms on pivot shaft. Check for faulty wiper motor.
BLADES DO NOT PARK PROPERLY
Check for improperly installed wiper arms. Check for faulty
linkage. Check for faulty wiring, wiper switch or wiper motor.
WIPER KNOCK NOISE
Check for improperly installed wiper arms. Check for faulty
linkage or wiper motor.
BLADES CHATTER
Check for foreign substance on blades or glass. Check for
twisted arm holding blade at wrong angle to glass. Check for bent or
damaged blades.
WASHERS DO NOT OPERATE
Check for low washer fluid level. Check for contaminated
washer fluid. Check for leaking or improperly routed hoses. Check for
faulty wiring, wiper switch or washer pump.
COMPONENT TESTS
INTERMITTENT WIPER RELAY
1) Remove relay. See INTERMITTENT WIPER RELAY under REMOVAL &
INSTALLATION. Check continuity between relay terminals No. 30 and 87A.
Continuity should exist. Check continuity between relay terminals No.
30 and 87. Continuity should not exist. Check resistance between relay
terminals No. 85 and 86. Resistance should be 70-80 ohms.
2) Connect battery voltage between relay terminals No. 85 and
86. Check continuity between relay terminals No. 30 and 87A.
Continuity should not exist. Check continuity between relay terminals
No. 30 and 87. Continuity should exist. Replace relay if continuity or
resistance is not as specified.
WIPER/WASHER SWITCH
NOTE: Wiper/washer switch is part of multifunction steering column
switch. If wiper/washer switch fails, entire multifunction
switch must be replaced.
Disconnect wiper/washer switch connector. Check continuity
between appropriate switch terminals with switch in specified
position. See WIPER/WASHER CONTINUITY TEST table. See Fig. 2. Replace
multifunction switch if continuity is not as specified.
WIPER/WASHER CONTINUITY TEST









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2) Turn wiper switch off. Depress washer switch. Washer pump
and wipers should operate while switch is depressed. Wipers should
operate about 3 sweeps after switch is released. If wipers are okay
but washer is not, go to next step. If washer is okay but wipers are
not, go to step 5).
3) Turn ignition off. Disconnect negative battery cable.
Disconnect washer pump harness connector. Check resistance between
washer pump harness connector Black wire terminal and ground. If
resistance is more than zero ohms, repair open in Black wire. If
resistance is zero ohms, go to next step.
4) Connect negative battery cable. Turn ignition on. While
depressing washer switch, check voltage at washer pump harness
connector Brown wire terminal. If battery voltage exists, replace
pump. If battery voltage does not exist, repair open in Brown wire.
5) Turn ignition off. Disconnect negative battery cable.
Access CTM and disconnect CTM harness connector. Connect negative
battery cable. Turn ignition on. With washer switch depressed, check
voltage at CTM 14-pin harness connector terminal No. 10 (Brown wire).
See Fig. 3 . If battery voltage exists, check intermittent relay. See
INTERMITTENT WIPER RELAY under COMPONENT TESTS. If battery voltage
does not exist, repair open in Brown wire.
Fig. 3: Identifying Central Timer Module 14-Pin Harness Connector
Terminals
Courtesy of Chrysler Corp.
WIPER

NOTE: This testing applies to base model Ram Pickup. For high line
Ram Pickup testing, see appropriate BODY CONTROL COMPUTER
TESTS article.
NOTE: Wiper system utilizes a Central Timer Module (CTM) to control\
intermittent functions of wiper system. If problem is only
pulse wipe or wipe-after-wash, see WASHER.
1) Check fuse No. 6 (25-amp) in junction block. If fuse is
blown, replace fuse and repair short as necessary. If fuse is okay, go
to next step.
2) Turn ignition on. Check for battery voltage at fuse. If
battery voltage does not exist, repair open circuit between fuse and
ignition switch as necessary. If battery voltage exists, go to next
step.
3) Turn ignition off. Disconnect negative battery cable.
Disconnect multifunction switch harness connector. Connect negative
battery cable. Turn ignition on. Check for battery voltage at
multifunction switch harness connector terminal No. 4 (Dark Blue
wire). See Fig. 2. If battery voltage exists, go to next step. If
battery voltage does not exist, repair open in Dark Blue wire between
fuse and multifunction switch.
4) If problem is intermittent wipe feature only, go to next
step. If problem is with all wiper modes or only HI and/or LO speed
modes, go to step 7).
5) Turn ignition off. Disconnect negative battery cable.
Disconnect CTM 14-pin harness connector. Check continuity between
multifunction switch harness connector terminal No. 1 (White/Dark Blue
wire) and CTM 14-pin harness connector terminal No. 12 (White/Dark
Blue wire). See Fig. 3. If continuity does not exist, repair open in
White/Dark Blue wire. If continuity exists, go to next step.
6) Check continuity between multifunction switch harness
connector terminal No. 2 (Violet wire) and CTM 14-pin harness
connector terminal No. 3 (Violet wire). If continuity does not exist,
repair open in Violet wire. If continuity exists, check intermittent
relay. See INTERMITTENT WIPER RELAY under COMPONENT TESTS.
7) Check continuity between multifunction switch harness
connector terminals No. 6 (Brown/White wire) and No. 9 (Brown/White
wire). If continuity does not exist, repair open in Brown/White wire.
If continuity exists, go to next step.
8) Check multifunction (wiper/washer) switch. See
WIPER/WASHER SWITCH under COMPONENT TESTS. If switch tests okay,
connect switch and go to next step. If switch does not test okay,
replace multifunction switch.
9) Turn ignition off. Disconnect negative battery cable.
Access wiper motor harness connector. Check resistance between wiper
motor harness connector Black wire terminal and ground. If resistance
is more than zero ohms, repair open in Black wire. If resistance is
zero ohms, go to next step.
10) Connect negative battery cable. Turn ignition on. Check
voltage by backprobing at wiper motor harness connector terminals
listed with multifunction switch in appropriate position. See SWITCH
POSITION VOLTAGE TEST table. If battery voltage exists at each
terminal, go to next step. If battery voltage does not exist at any
terminal, repair open in appropriate wire.
SWITCH POSITION VOLTAGE TEST









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Switch Position Wiper Motor Terminal
Any .............................................................. 3
Low .............................................................. 4