Standard Wipers
HIGH SPEED TEST1. Turn ignition switch on and turn wiper switch to high position.
2. If there is voltage at circuit 61 pin (yellow/red wire) at wiper motor connector, but motor does not run, electrically ground circuit 58 (white wire).
3. If motor runs with circuit 58 grounded, repair wiper switch ground circuit or replace wiper switch.
4. If motor does not run with circuit 58 grounded, repair or replace motor.
5. If there is voltage only at circuit 65 pin (green wire), replace wiper switch. If there is no voltage at 65, trace problem back to source of current.
LOW SPEED TEST
1. Turn ignition switch on and turn wiper switch to low position.
2. If there is voltage at circuit 61 pin (yellow wire) at wiper motor connector but motor does not run, electrically ground circuit 56 (blue wire).
3. If motor runs with circuit 56 grounded, repair wiper switch ground circuit or replace wiper switch.
4. If motor does not run with circuit 56 grounded, repair or replace motor.
5. If there is voltage only at circuit 65 pin, replace wiper switch. If there is no voltage at 65, trace problem back to source of current.
PARK OPERATION TEST
1. Turn ignition switch on and wiper switch to off position.
2. If wipers do not park, check for voltage at circuits 63 (red wire) and 61 (yellow wire) pins at wiper motor connectors.
3. If there is voltage at 61 and 63, ground circuit 56 (blue wire).
4. If wipers park with 56 grounded, repair ground circuit or replace wiper switch. If motor does not run, repair or replace motor.
5. If there is voltage at 65 circuit pin (green wire) but not at 63, repair wiper motor park switch.
6. If there is no voltage at 65, trace problem back to source of current.