Motor Will Not Operate In Any Switch Position

Fig. 1 Two-speed Motor Terminal Locations:

Fig. 2 Intermittent Wiper Motor Terminal Locations:

Fig. 3 Wiper Motor Terminal Location:

Prior to performing diagnostic procedures, check for blown fuse in fuse block. If fuse is good, proceed to step 1. If fuse is defective, replace and check for motor operation in all switch positions. If motor is still inoperative, and fuse does not blow, proceed to step 1. If replacement fuse blows, disconnect motor wiring connector, then replace fuse. If fuse does not blow, motor is defective. If fuse blows, faulty switch or wiring is indicated.
1. Place wiper switch in low position and listen to hear if motor is running.
2. If motor is running, but output shaft is not rotating, replace gearbox assembly. If driveshaft is turning, check drive link to output shaft or linkage for proper connection.
3. Check wiper system fuse on FWD models, and replace if necessary. If fuse blows again, proceed to step 8. If fuse does not blow, continue with next step.
4. Connect voltmeter between wiper motor terminal L and ground leaving electrical connector in place.
5. If meter indicates approximately 12 volts, check motor ground as follows:
a. On models less concealed wipers, ensure ground strap is properly connected and free of corrosion.
b. On models with concealed wipers, connect jumper wire between motor terminal P2 and ground. If motor runs, check continuity of wiring between motor and switch, switch continuity and ensure switch is grounded.
6. If motor ground is satisfactory in step 5, check wiper motor brushes and armature, and repair as needed.
7. If voltmeter indicates no voltage at motor terminal L, and fuse or circuit breaker is satisfactory, check continuity of wiper system wiring and wiper switch. Repair wiring or replace switch as needed.
8. If wiper system fuse is blown on front wheel drive models or if circuit breaker is cycling on all other models, disconnect electrical connector to wiper motor. On FWD models install a suitable test circuit breaker across wiper system fuse terminals.
9. Check voltage at terminal L in electrical connector to wiper motor.
10. If circuit breaker continues to cycle, check for short circuit in wiper system wiring or defective switch.
11. If meter indicates approximately 12 volts in step 9, and circuit breaker does not cycle, check motor as follows:
a. Remove wiper arm assemblies.
b. Connect positive lead of ammeter to battery positive post, and connect negative lead to motor terminal L. On models with concealed wipers, connect jumper wire between motor terminal P2 and ground.
c. If motor operates and draws less than 6 amps, motor is satisfactory. Recheck switch, wiring and circuit breaker.
d. If motor does not operate, or operates but draws more than 6 amps, disconnect ammeter and remove crank arm retainer and arm from motor.
e. Repeat step b. If motor operates and draws 3 amps or less, repair wiper linkage. If motor does not operate, or operates but draws more than 3 amps, repair or replace motor.