Taurus V6-195 3.2L DOHC SHO (1994)
Wiper Motor: Testing and Inspection
Motor Test
The ignition switch must be in RUN for all tests. Verify proper operation of wiper system in LO. With system operating in LO, turn signal and
windshield wiper switch to OFF when windshield wiper blades are in vertical (straight-up) position. Windshield wiper blades should complete cycle
and press park (to bottom of windshield). If the windshield wiper blades do not park, refer to appropriate condition of system below and test and
service as indicated:
Windshield wiper motor stops when turn signal and windshield wiper switch is turned to OFF (does not complete cycle).
1. Remove windshield wiper motor park switch connector and check for battery voltage, using Rotunda Digital Volt-Ohmmeter 014-00407 or
equivalent on Circuit 65 (DG). If battery voltage is not present, service circuit as required. If voltage is present, go to Step 2.
2. Check windshield wiper motor ground wiring at turn signal and windshield wiper switch connector.
3. With both windshield wiper motor connectors disconnected, use an ohmmeter, such as Rotunda Digital Volt-Ohmmeter 014-00407, or equivalent,
to verify continuity (less than one ohm) between circuits 28 (BK/PK) and 58(W) in the wiring harness. If continuity is not present, trace and
service as required. If continuity is Ok, leave connectors disconnected and go to Step 4.
4. Check for continuity to ground terminal on gear cover at circuit terminal 28 (BK/PK) on windshield wiper motor. If open, replace windshield
wiper motor. If ground is present, leave connectors disconnected and go to Step 5.
5. Verify continuity (less than one ohm resistance) between Circuits 61 (Y/R) and 63(R) in the wiring harness. If continuity is not present, trace and
service as required. If lack of continuity is traced to windshield wiper governor, check turn signal and windshield wiper switch for continuity as
outlined. Replace turn signal and windshield wiper switch if continuity is not present. If continuity is present in turn signal and windshield wiper
switch and lack of continuity has been traced to windshield wiper governor, replace windshield wiper governor. If continuity between Circuits 61
(Y/R) and 63(R) is OK, leave connectors disconnected and go to Step 6.
6. Check for continuity between Circuits 63(R) and 65 (DG) on windshield wiper motor. If open, replace windshield wiper motor.
A. Windshield wiper blades go into depressed park (below windshield), but windshield wiper motor keeps running. Replace windshield wiper motor.
B. Windshield wiper blades stall or jam (windshield wiper motor starts running in reverse direction) while going from park to depressed park (below
windshield).
7. Check windshield wiper mounting arm and pivot shaft and service as required. If OK, go to Step 8.
8. Check windshield wiper motor arm and windlatch assembly. If bent or cracked, replace windshield wiper motor.
A. Windshield wiper blades complete cycle, but continue to wipe for part of another cycle and park on windshield, or
B. Windshield wiper blades run continuously in OFF or INTERVAL, or
C. Windshield wiper blades run to bottom of windshield and stop, but will not depress park below windshield.
9. Perform turn signal and windshield wiper switch continuity test. If continuity test fails, replace windshield wiper motor. If continuity test is OK on
standard windshield wiper system, replace windshield wiper motor. If continuity test is OK on interval wiper system, go to Step 10.
10. Check wash Circuit 941 (BK/W) for no voltage. If any voltage is present, service as required. If no voltage is present, go to Step 11.
11. Disconnect connectors at windshield wiper motor and check for continuity between Circuits 61 (Y/R) and 63(R) going to windshield wiper
governor. If open, replace windshield wiper governor. If continuity is present, replace windshield wiper motor.