RAM 1500 Van V8-5.9L VIN Z LDC (2001)
Wiper Control Module: Testing and Inspection
Intermittent Wipe Module Test
The intermittent wipe module is used on vehicles that are not equipped with the Vehicle Theft Security System (VTSS). If the problem being diagnosed
involves only some of the intermittent wipe delay positions, test the wiper switch and/or washer switch circuitry of the multi-function switch before
proceeding with the following tests. (Refer to LAMPS/LIGHTING - EXTERIOR/MULTI-FUNCTION SWITCH - DIAGNOSIS AND TESTING). If
the problem being diagnosed involves all of the intermittent wipe delay positions and/or the wipe-after-wash feature, the following tests will confirm the
hard wired circuits that provide inputs to or outputs from the intermittent wipe module.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, SEAT BELT TENSIONER, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG
SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
1. Disconnect and isolate the battery negative cable. Disconnect the instrument panel wire harness connector for the intermittent wipe module from
the module connector receptacle. Check for continuity between the ground circuit cavity of the instrument panel wire harness connector for the
intermittent wipe module and a good ground. If OK, go to Step 2. If not OK, repair the open ground circuit to ground (G201) as required.
2. Reconnect the battery negative cable. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output
(run-acc) circuit cavity of the instrument panel wire harness connector for the intermittent wipe module. If OK, go to Step 3. If not OK, repair the
open fused ignition switch output (run-acc) circuit between the intermittent wipe module and the fuse block as required.
3. Turn the ignition switch to the OFF position. Disconnect and isolate the battery negative cable. Disconnect the headlamp and dash wire harness
connector for the wiper motor from the wiper motor pigtail wire connector. Check for continuity between the wiper park switch sense circuit
cavities of the instrument panel wire harness connector for the intermittent wipe module and a good ground. There should be no continuity. If OK,
go to Step 4. If not OK, repair the shorted wiper park switch sense circuit between the intermittent wipe module and the wiper motor as required.
4. Check for continuity between the wiper park switch sense circuit cavities of the instrument panel wire harness connector for the intermittent wipe
module and the headlamp and dash wire harness connector for the wiper motor. There should be continuity. If OK, replace the faulty intermittent
wipe module. If not OK, repair the open wiper park switch sense circuit between the intermittent wipe module and the wiper motor as required.
