New Holland CX720 Repair Manual page 2977

Wiper system - Problem solving (E.34.A.65 - G.40.A.30)
OPERATION
The wiper/washer system consists of a two speed motor and a separate Washer Motor and reservoir.
The system is energized by switched power and will operate in continuous or fixed interval speeds.
Refer to : Wiring harness - Electrical schematic frame 44 (A.30.A.88 - C.20.E.44).
Refer to : Wiring harness - Electrical schematic frame 45 (A.30.A.88 - C.20.E.45).
TROUBLESHOOTING
Before troubleshooting the Wiper/Washer system make sure that the following operating conditions are met:
A. The batteries are fully charged and all connections are clean and tight.
B. Transmission in neutral or park.
C. Check all connectors for full installation, loose, corroded or pushed out terminals.
D. Check Fuse #52 and Circuit Breaker 51.
E. Check Power Distribution section if fuse and circuit breaker are good.
NOTE: The batteries must be fully charged and all connections clean and tight. Use a multimeter (DVOM) for these
tests. For battery testing and service, see the battery section in the service manual.
DO NOT use a self-powered test light for any of these tests. Use of a self-powered light can cause damage
to components in this system. M979
Before performing any of the electrical tests, be sure all operating controls are in neutral or park lock position.
This will eliminate accidental movement of the machine or start-up of power driven equipment. M980
Problem
Wiper Motor is inoperative Wiper Relay
Wiper Motor works in low
speed only
Wiper Motor works in high
speed only
Wiper Motor does not
park, stops when switch
is turned OFF
BODY AND STRUCTURE - USER PLATFORM
CAUTION
CAUTION
Possible Cause
Wiper Switch
Wiper Motor
Wiper Switch
Wiper Motor
Wiper Switch
Wiper Motor
Wiper Switch
Wiper Motor
A - Wiper Relay TestWiper system Relay
- Testing (E.34.A.65.03 - G.40.A.20).
B
tem Switch - Testing (E.34.A.65.02 -
G.40.A.20).
C - Wiper Motor TestWiper system Motor
- Testing (E.34.A.65.01 - G.40.A.20).
B
tem Switch - Testing (E.34.A.65.02 -
G.40.A.20).
C - Wiper Motor TestWiper system Motor
- Testing (E.34.A.65.01 - G.40.A.20).
B
tem Switch - Testing (E.34.A.65.02 -
G.40.A.20).
C - Wiper Motor TestWiper system Motor
- Testing (E.34.A.65.01 - G.40.A.20).
B
tem Switch - Testing (E.34.A.65.02 -
G.40.A.20).
C - Wiper Motor TestWiper system Motor
- Testing (E.34.A.65.01 - G.40.A.20).
2 4/7/2006
E.34.A / 15
Correction
- Wiper Switch TestWiper
- Wiper Switch TestWiper
- Wiper Switch TestWiper
- Wiper Switch TestWiper
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