Tempo L4-140 2.3L HSC (1986)
Wiper Motor: Testing and Inspection
System Testing
WIPER MOTOR INOPERATIVE, OR OPERATES AT ONE SPEED ONLY
Non-Depressed Park Type
1.
Check linkage for binding or obstruction and repair as needed.
2.
Place ignition switch in on position.
3.
Slightly separate electrical connector to wiper motor to gain access to terminals, but leave harness connected to motor.
4.
Connect test lamp between red wire terminal at motor and ground. If lamp does not light, check wiper system feed circuit from ignition switch.
5.
Place wiper switch in low position and connect test lamp between white wire terminal at motor and ground.
6.
Place wiper switch in high position and connect test lamp between blue wire terminal at motor and ground.
7.
If lamp does not light in step 5 or 6, check continuity of wiper switch and wiper system wiring. Repair wiring or replace switch as needed.
8.
If lamp lights in steps 5 and 6, check motor as outlined in ``Wiper Motor Current Draw Test.''
Depressed Park Type
1.
Check linkage for binding or obstruction and repair as needed.
2.
Disconnect electrical connector to motor brush plate and place ignition switch in on position.
3.
Place wiper switch in low position and connect test lamp between yellow/red and blue/orange wire terminals in harness connector.
4.
Place wiper switch in high position and connect test lamp between yellow/red and white wire terminals in harness connector.
5.
If lamp does not light in step 3 or 4, check feed circuit from ignition switch, wiper switch continuity and continuity of wiring between switch and
motor.
6.
If lamp lights in steps 3 and 4, check motor as outlined in ``Wiper Motor Current Draw Test.''
WIPERS DO NOT PARK
When wiper switch is placed in off position with ignition on, wipers should return to a park position and stop. Non-depressed park type wipers should
return to their lowest point of travel within one wipe cycle. In depressed park systems, wipers return to their lowest point of travel, then the motor
reverses to park wipers in a concealed position and stops. Before checking for defective electrical components, ensure wiper arms, motor crank arm, and
wiper linkage are properly installed.
Fig. 1 Park switch test connections. Non-depressed park motor exc. Tempo & Topaz
