Intermittent Wipe Module; Multi-Function Switch - Dodge ram truck 3500 1996 Service Manual

81 - 6 WIPER AND WASHER SYSTEMS —
DIAGNOSIS - H D TESTING (Continued)
TERMINAL T E S T
J948K-25
Fig. 4 Test Lamp Between Terminal H and Ground
;-26
Fig. 5 One Jumper Wire Between Terminal P2 and L
- One Jumper Wire Between Terminal P1 and B+
(2) Connect a second jumper from terminal P I to
the battery. I f motor runs to the park position and
stops, the multi-function switch is faulty. I f the motor
keeps running and does not park, replace the faulty
motor assembly.
CONDITION
The wiper motor will stop when wiper/washer
switch is set in the Off position, but the wipers
do not continue running to the park position.
PROCEDURE
(1) Remove the motor wiring connector and clean
the terminals. Reconnect the wiring and test the
motor. I f not OK, go to Step 2.
(2) Set the wiper/washer switch in the Off position.
Disconnect the motor wiring connector. Connect a
voltmeter or test lamp to the motor ground strap.
Connect the other lead to terminal P I of the wiring
connector. I f voltage is not present, check for an open
circuit i n the wiring harness or multi-function
switch. I f voltage is present, go to Step 3.
BR
(3) Connect an ohmmeter or continuity tester
between terminals L and P2 (Fig. 6). I f there is con­
tinuity between these terminals, the problem is a
faulty motor. I f there is no continuity, the problem is
an open i n the wiring or a faulty multi-function
switch.
OHMMETER TERMINALS
Fig. 6 Ohmmeter Between Terminal L and P2
MULTI-FUNCTION SWITCH
Perform the diagnosis for the wiper and/or washer
systems as described i n this group before testing the
multi-function switch. For circuit descriptions and
diagrams, see 8W-53 - Wipers in Group 8W - Wiring
Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AN AIR-
BAG, REFER TO GROUP 8M - PASSIVE RESTRAINT
SYSTEMS BEFORE ATTEMPTING STEERING
WHEEL OR STEERING COLUMN COMPONENT
DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI­
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Disconnect the multi-function switch connector
as described in this group.
(2) Using an ohmmeter, perform the switch conti­
nuity checks at the switch terminals as shown in the
chart (Fig. 7).
(3) I f the switch fails any of the continuity checks,
replace the faulty switch.
INTERMITTENT WIPE MODULE
See the diagnosis for the Wiper Motor or Multi-
Function Switch i f the problems do not involve the
Delay function. I f the problem occurs only in the
Delay mode, the following tests are to be performed.
For circuit descriptions and diagrams, refer to 8W-53
- Wipers in Group 8W - Wiring Diagrams.