Front Wiper Conditions Test

MOTOR WILL NOT RUN IN ANY SWITCH POSITION
1. Check fuse 15, in the instrument panel Fuse Block. See the Wiper Motor Connector Pin Call-Out table for circuit information and location. Refer to the appropriate wiring information.
a. If fuse(s) are good, go to Step 2.
b. If fuse(s) are defective, replace and check motor operation in all switch positions.
c. If motor is still inoperative and the fuse does not blow, go to Step 2.
d. If replacement fuse blows, go to Step 6.
2. Disconnect the wiper motor wire harness connector.

Fig. 2 Wiper Motor Connector:

3. Check the wiper motor low speed. Using two jumper wires, connect one jumper wire between the battery positive post and terminal 5 on the wiper motor connector. Connect the other jumper wire to ground and terminal 4 on the wiper motor connector. Check the wiper motor high speed, connect the positive jumper wire to terminal 6 on the wiper motor connector. Connect the negative jumper wire to terminal 4 on the wiper motor connector.
a. If motor runs, go to Step 4.
b. If motor does not run in high or low speed, replace the wiper motor and go to Step 4.

Fig. 3 Wiper Motor Harness Connector:

4. Using an ohmmeter, check for good ground at terminal 4 of the wiper motor wire harness connector. If OK, go to Step 5. If not OK, repair the ground circuit as necessary.

Intermittent Relay Terminal Call-Out:

5. With the ignition switch in the ON position, use a voltmeter to check for battery voltage at terminal 13 and 29 of the intermittent wiper relay in the Power Distribution Center. If no voltage check fuse 15. If not OK, go to Step 6. If OK, repair wiring as necessary.
6. Disconnect motor connector and replace fuse 15 in the fuse block. Run the wiper switch through all the stops. If the fuse blows, wiper control circuit is at fault, go to Step 7. If fuse does not blow replace wiper motor.
7. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If switch is OK, go to Step 8. If not OK, replace the Multi-Function switch.
8. Connect the Multi-Function switch. Refer to Multi-Function Switch Diagnosis and Testing. Run wiper switch through all the steps. Which step did the fuse fail.
a. OFF position, there is a short in the V6 circuit. Repair circuit as necessary.
b. LOW position, there is a short in the V3 circuit. Repair circuit as necessary.
c. HIGH position, there is a short in the V4 circuit. Repair circuit as necessary.
d. INTERMITTENT WIPER MODE, remove the Intermittent Wiper Relay and check relay terminals 14 and 37 for continuity to ground. If OK, replace relay. If not OK, repair circuit as necessary.

NO LOW SPEED
1. Disconnect motor wire harness connector and put wiper switch in LOW position.
2. Using a voltmeter, check for battery voltage between terminals 4 and 5 of the wire harness connector. If OK, replace motor assembly. If not OK, go to Step 3.
3. Check for battery voltage between terminal 5 and the battery negative post. If OK, repair ground circuit. If not OK, go to Step 4.
4. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, repair the V3 circuit. If not OK, replace the Multi-Function switch.

NO HIGH SPEED
1. Disconnect wiper motor wire harness connector and put wiper switch in HIGH position.
2. Using a voltmeter, check for battery voltage between terminals 6 and 4 of the wire harness connector. If voltage is voltage is OK, replace Wiper motor. If not OK, go to Step 3.
3. Check for battery voltage between terminal 6 and the battery negative post. If not OK, repair ground circuit to wiper motor. If OK, go to Step 4.
4. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, repair the V4 circuit. If not OK, replace the Multi-Function switch.

MOTOR KEEPS RUNNING WITH SWITCH OFF
1. Disconnect wiper motor wire harness connector.
2. Using the motor wire connector, connect a jumper wire between terminal 2 and 5, and connect terminal 1 to a battery source. The wiper motor should park. If motor does not park, replace motor. If motor parks, go to Step 3.
3. Remove intermittent relay from the PDC. Check terminal 15 for continuity to ground, If no continuity, go to Step 5. If continuity, go to Step 4.
4. Disconnect the BCM, and repeat Step 3. If no continuity, replace BCM. If continuity, repair the V14 circuit.
5. Replace the intermittent relay with a known good relay. Wipers park, replace relay. If wipers do not park, go to Step 6.
6. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, go to Step 7. If not OK, replace the Multi-Function switch.
7. With wiper switch OFF, check circuits V3, V4, and V5 for short to feed. Repair wiring as needed.

WIPERS DO NOT PARK WHEN WIPER SWITCH IS TURNED OFF
1. Disconnect wiper motor wire harness connector.
2. Using a voltmeter, check for battery voltage between terminals 1 and 4 of the wire harness connector. If voltage is voltage is OK, go to Step 4. If not OK, go to Step 3.
3. Check for battery voltage between terminal 1 and the battery negative post. If OK, repair ground circuit. If not OK, repair the feed circuit.
4. Using a ohmmeter, check for continuity between terminal 2 and 5. If OK, replace wiper motor. If not OK, go to step
5. Remove intermittent relay from the PDC. Check terminal 2 of the motor wire harness to terminal 14 of the PDC for continuity. If not OK, repair circuit. If OK, go to Step 6.
6. Check terminal 5 of the wiper motor wire harness to terminal 37 of the PDC for continuity. If OK, replace intermittent relay. If not OK, go to Step 7.
7. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, repair the V3/V5 circuit. If not OK, replace the Multi-Function switch.

MOTOR RUNS SLOWLY IN ALL SPEEDS
1. Disconnect wiper motor wire harness connector. Remove wiper arms and blades. Connect an ammeter between terminal 5 of the motor wire harness connector and battery positive post and ground pin #4. If the motor runs and the average ammeter reading is more than 6 amps, replace motor. If the motor runs and the average ammeter reading is less than 6 amps go to Step 2.
2. Check wiper motor wiring harness for short between the high and low speed circuits:
a. Set wiper switch to the LOW position.
b. Connect a voltmeter ground lead to the wiper motor ground.
c. Connect the positive lead to terminal 6 of the wire harness connector.
d. If voltage is present, there is a short in the wiring or Multi-Function switch.
e. If no voltage is present set Multi-Function switch to the HIGH position.
f. Move the positive lead to terminal 5 of the wire harness connector.
g. If voltage is present, there is a short in the wiring or Multi-Function switch.
h. If no voltage is present, check the ground for a good connection. If ground is OK, replace the wiper motor.

NO INTERMITTENT WIPER, LOW AND HIGH SPEEDS OK
1. Turn the ignition switch to the ON position.
2. Remove the intermittent relay from the PDC.
3. Check for battery voltage at terminal 13 and 29 of the intermittent relay in the PDC. If no voltage repair the V6 circuit. If voltage is OK, go to Step 4.
4. Turn the ignition switch to the OFF position. Disconnect motor wire harness connector. Place the Multi-Function switch in the Intermittent wiper position. Check for continuity between terminal 37 of the PDC and terminal 5 of the wiper motor wire harness connector. If not OK, go to Step 5. If OK, go to Step 6.
5. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, repair the V3/V5 circuit. If not OK, replace the Multi-Function switch.
6. Install intermittent relay in the PDC. Disconnect the BCM connectors.

Fig. 5 BCM Connectors:

7. Place a jumper wire between ground and terminal 73 of the BCM. Do the wiper run continuous? If no go to step Step 8. If yes, go to Step 10.
8. Perform the Multi-Function Switch Test. Refer to Multi-Function Switch Diagnosis and Testing. If OK, go to Step 9. If not OK, replace the Multi-Function switch.
9. Check for continuity between terminal 7 of the BCM and terminal 1 of the Multi-Function switch. If OK, replace BCM. If not OK, repair wire circuit.
10. Remove the intermittent relay. Check for continuity between terminal 73 of the BCM and terminal 15 of the PDC. If OK, replace the intermittent relay. If not OK, repair wire circuit.