Beretta V6-173 2.8L (1989)
2.
If motor operates at high speed, connect battery voltage to low speed terminal 2, Fig. 10. If motor operates at low speed, connect battery voltage to
high speed terminal 1, Fig. 10.
3.
If motor operates at affected speed, check continuity of wiring between motor and switch. If wiring is satisfactory, switch is defective.
4.
If motor fails to operate in affected speed, repair or replace motor.
Motor Operates At One Speed In Both High & Low Switch Positions
1.
Disconnect electrical connector to wiper motor and alternately connect battery voltage to motor low and high speed terminals, Fig. 10.
2.
If motor runs at both low and high speeds, check continuity of wiring between motor and wiper switch. If wiring is satisfactory, wiper switch is
defective.
3.
If motor operates at one speed in both test positions, check for short between high and low speed motor brushes and repair as needed.
Motor Inoperative In Delay Mode
1.
Disconnect wiper switch electrical connector at pulse control module and connect ohmmeter between brown and dark green wire terminals in
connector.
2.
Meter readings should be approximately 50 ohms with switch in minimum delay position to 500,000 ohms with switch in maximum delay position.
3.
If readings are as specified, pulse control module is defective. If readings are not as specified, wiper switch is defective.
Motor Will Not shutoff
1.
Disconnect electrical connector to wiper motor.
2.
Connect jumper wire between motor terminals 2 and 3, and apply battery voltage to terminal 4, Fig. 10.
3.
If motor runs to park position and stops, control switch is defective.
4.
If motor does not park properly, check for defective park switch, brush holder or park switch actuator.
Wipers Stop But Do Not Return To Park
1.
Rotate wiper switch to off position, disconnect wiper motor electrical connector and connect jumper wire between motor terminals 2 and 3.
Connect 12 volt power source to terminal 4, Fig. 10.
2.
If wipers do not return to park position, check park switch actuator and brush holder inside motor and repair or replace as necessary.
3.
If wipers return to park position, connect wiper motor electrical connector and check current between terminals 2 and 3 using test lamp.
4.
If lamp lights, check for open circuit in white wire between terminal 4 and fuse block. If lamp does not light, check for open circuit in orange wire
between terminal 3 and control switch.
5.
If wiring has continuity, replace control switch.
Wipers Park Above Normal Position
1.
Rotate wiper switch to off position, disconnect wiper motor electrical connector and check continuity between motor terminal 3 and ground using
test lamp.
2.
If lamp lights, check crank arm and linkage for proper installation. If lamp does not light repair or replace motor as necessary.
Depressed Park Motor W/Integral Washer Pump
On models with pulse wipers, disconnect electrical connectors to pulse module and connect switch and motor harnesses together. If problem is
corrected, pulse module is defective.
Wiper Motor Inoperative
1.
Turn ignition switch on and wiper switch off and connect test lamp lead to ground on vehicle and backprobe terminal 3.
2.
If lamp does not illuminate, check fuse.
3.
If fuse is satisfactory, locate and repair open circuit from fuse block to wiper motor.
4.
If fuse is blown, replace it.
5.
If fuse blows again, unplug motor and replace fuse.
6.
If fuse blows again, check for grounded condition in wire to terminal No. 3.
7.
If fuse does not blow again, check for high amperage of motor. Lowest current draw on dry glass should not exceed 6.5 amps.
8.
If lamp illuminated in step 1, connect test lamp lead to ground at wiper motor case and backprobe terminal 3.
9.
If lamp does not illuminate, check both motor ground connections.
10.
If lamp illuminates, set wiper switch to LO, connect test lamp lead to ground at wiper motor case and backprobe terminal 2.
11.
If lamp does not illuminate, repair open from wiper switch to motor.
12.
If lamp illuminates, backprobe terminal 1.
13.
If lamp does not illuminate, replace park switch.
14.
If lamp illuminates, backprobe terminal 4.
15.
If lamp does not illuminate, repair open between terminal Nos. 1 and 4 in wiring harness.
16.
If lamp illuminates, check armature, circuit breaker, circuit breaker ground and brushes.
Intermittent Wiper Operation In Pulse, LO or HI Modes
1.
Remove wiper fuse and connect 0-30 amp ammeter between fuse block terminals, set wiper to LO and note lowest current draw while wiper is
running on dry glass. (Current draw will fluctuate).
2.
If current draw is less than 3.5 amps, proceed as follows:
a. Check motor grounds.
