Chrysler RAM TRUCK 2500 1994 Service Manual page 473

8K - 4 WINDSHIELD WIPER AND WASHER SYSTEMS
•
PROCEDURE
(1) I f motor will not run on high speed, put switch
in HIGH position and connect a test lamp between
motor terminal "H" and ground (Fig. 3).
TERMINAL
" H "
WIPER
MOTOR
/
G R O U N D
J948K-25
Fig. 3 Test Lamp Between Terminal "H" and Ground
I f motor will not run on low speed, put switch i n
LOW position and connect a test lamp between motor
terminal "L" and ground.
(2) I f test lamp does not light at motor terminal,
there is an open i n wiring or switch. I f test lamp
lights at motor terminal, replace motor assembly.
CONDITION
Motor will keep running with switch i n O F F
position.
P R O C E D U R E
(1) Remove wiring harness. Connect jumper from
terminal P2 to terminal "L" of wiper motor (Fig. 4).
(2) Connect second jumper from terminal " P I " to
battery. I f motor runs to PARK position and stops,
wiper switch is faulty. I f motor keeps running and
does not park, replace motor assembly.
CONDITION
Motor will stop wherever it is, when column
switch is put in O F F position. (Wipers do not
continue running to PARK position).
P R O C E D U R E
(1) Remove motor wiring connector and clean ter­
minals. Reconnect connector and test motor. I f prob­
lem persists, proceed to step (2).
(2) Put wiper switch to OFF and ignition switch to
ACCESSORY position. Disconnect motor wiring con-
TERMINALS
WIPER
MOTOR
J948K-26
Fig. 4 One Jumper Wire Between Terminal "P2" and
"L". One Jumper Wire Between Terminal "PI"and
"B+"
nector. Connect a voltmeter or test lamp to the motor
ground strap. Connect the other lead to terminal "PI"
of wiring connector.
(a) I f voltage is not present, check for an open
circuit i n the wiring harness or wiper control
switch or fuse.
(b) I f voltage is present, proceed to step (3).
(3) Remove wiper motor from vehicle and connect
an ohmmeter or continuity tester between terminals
"L" and "P2" (Fig.
5).
OHMMETER
TERMINALS
J948K-27
Fig. 5 Ohmmeter Between Terminal "V and "P2"
(a) I f there is continuity between these termi­
nals, the problem is a defective motor.
(b) I f there is no continuity, the problem is an
open circuit i n the wiper control switch or wiring
harness.