Case 1021F, 1121F Wheel Loader Repair Manual

Model: Case 1021F and 1121F
Manuals: Service Manual
Introduction
Engine
Transmission
Four Wheel Drive
Front Axle
Rear Axle
Brakes and Controls
Hydraulic System
Steering
Wheels
Cab Climate Control
Electrical System
Platform, cab, bodywork and decals
Special Tools Index
Electrical Schematics 1021F and 1121F
Hydraulic Schematics 1021F and 1121F
Manual Extract: Parking brake control Button switch – Testing – Parking Brake Switch Troubleshooting
| Test Point
| Expected Result
| Other Result (Possible Cause)
| Condition
Turn the key switch ON.
Check
Measure the voltage from Parking
Brake Switch pin 2 to chassis ground.
| Result
The voltage should be approximately
24 V.
| Action
The voltage is less than 10 V, there is
a problem in the battery supply to the
switch. Check fuse ECA-F6. Repair
as required.
| Condition
Actuate the Parking Brake Switch.
Check
Measure the voltage from Parking
Brake Switch pin 3 to chassis ground.
| Result
The voltage should be approximately
24 volts.
| Action
The voltage is less than 10 V, there
is a problem in the Parking Brake
Switch. Temporarily replace the
switch and retest.
| Condition
Actuate the Parking Brake Switch.
Check
Measure the voltage from AIC connector
pin 6 to chassis ground.
| Result
The voltage should be approximately
24 volts.
Action
Temporarily replace the Instrument
Cluster and retest.
| Action
The voltage is less than 10 volts
there is a problem in the signal wire
from the switch to the AIC display.
Repair as required.
Identify the Tier Level of your Equipment (Read our Article on Tier Level )