Case CX130 - Page 127

DIAGNOSTIC - SELECTION
4 - 39
CASE TRAINING CENTER
AUGUST 2000
Translation
Description of problem No. 8
- Not possible to change travel speed
No. Check Result Repair
1
Changing to second speed is not
shown on the checking screen
when pressing the speed
selection switch
Check the signal at connector
CN4 terminal 64 on the
electronic control box
0 Volt continuous, change the
electronic control box
Check the signal at connector
CN13 terminal 3 on the
instrument panel
0 Volt continuous, check the
connecting cable between
terminals 3 and 64
5 Volts continuous when
pressing the switch, change the
speed change switch
2
The travel mode changes when
the speed control switch is held
pressed down for over two
seconds
The electrical harness between
the electronic control box and
the 2nd speed solenoid valve
(red) is defective
The voltage is equal to 24 V at
the output from the electronic
control box (CN6 terminal 30)
Check the solenoid valve and
the hydraulic system (see
hydraulic system
troubleshooting)
The voltage is below 24 V at the
output from the electronic
control box (CN6 borne 30)
Change the harness
3
Using diagnostic mode CHK3.
the travel pressure switch does
not change to ON when the
travel function is operated
The electrical harness between
the electronic control box and
the pressure switch is cut
Repair the harness
The pressure switch is defective Change the pressure switch
4
Using diagnostic mode CHK3.
the pilot pressure switch stays
ON
The electrical harness between
the electronic control box and
the pressure switch is short
circuited
Repair the harness
The pressure switch is defective Change the pressure switch
5
Check the pressure detectors
P1. P2 and the hydraulic pump
regulating detector (N) using
mode CHK1
One of the harnesses is
defective
Repair the harness
Voltage under 5 V, at input to
one of the detectors
Change the electronic control
box
Voltage under 5 V, at input to
one of the detectors
Change the electronic control
box
Voltage equal to 5 V, at input to
one of the detectors
Change the faulty detector