LTD Country Squire V8-302 5.0L VIN F TBI (1983)
Wiper Motor: Testing and Inspection
Circuit Breaker Test
On models with a dash mounted rotary wiper switch, the circuit breaker is integral with the switch. On rotary pin type switches normally used with
depressed park wipers, the circuit breaker has a rated capacity of 8{1-4} amps. On rotary blade type switches normally used with non-depressed park
wipers, the circuit breaker has a rated capacity of 7 amps. The circuit breaker used on models with dash mounted slide-type switches and models with
steering column mounted switches is located in the fuse block, and the rated capacity is stamped on the circuit breaker.
Fig. 16 Windshield wiper switch circuit breaker test connections
TEST 1
1.
Adjust current draw on volt-amp tester until it equals circuit breaker rating.
2.
Connect switch or circuit breaker to tester, Fig. 16, and leave connected for 10 minutes while maintaining current reading on tester at rated
current. If the circuit breaker opens during the 10 minutes, replace the circuit breaker or wiper switch assembly.
TEST 2
1.
Adjust the current draw on the volt-amp tester until it is twice the current rating of the circuit breaker.
2.
Connect switch or circuit breaker as shown in Fig. 16, while maintaining the current draw at twice the rating of the circuit breaker. The current
reading on the ammeter should drop to zero within 30 seconds. If it takes more than 30 seconds for the reading to drop to zero, replace the circuit
breaker or switch assembly.
Motor Testing
Exc. Taurus & Sable
1.
Perform steps 1 through 3 as outlined in ``System Testing.''
2.
Using suitable jumper wires, connect battery voltage to white wire terminal on motor side of electrical connector.
3.
If motor does not run, connect a jumper wire between motor housing and ground.
4.
If motor runs, repair motor ground. If motor does not run, repair or replace motor.
5.
If motor runs in step 2, stop motor with wiper arm at top of travel by disconnecting jumper wire.
6.
Connect battery voltage to red wire terminal on motor side of electrical connector.
7.
If motor does not run to park position and stop, repair or replace motor.
Notes On Testing
If a malfunction exists on models with intermittent wipers and all other components are satisfactory, check intermittent governor ground and/or replace
governor.
System Testing
Turn the ignition switch on and verify proper operation of the wipers in low speed. When the wipers pass the vertical (straight up) position, turn the
wiper switch to OFF. The wipers should complete the cycle and park below the windshield. If the wipers do not operate properly, refer to appropriate
symptom and test as indicated.
