Electrical systems – 5000 Diagnostic and troubleshooting Order number 232370-040
Date 2006-04-10
Valid from serial number 931876-
T-code 787, 788
Table 28: List of error codes Code
Description
Possible cause / Hint or Solution
C22
“Walkie” button warning
One of the “Walkie” buttons is depressed during start-up. / Restart the truck!
C26
Steer servo start up error
The steering servo does not respond during initialisation. [A5] / Inspect the connections to the steering servo. [A5]
C28
Emergency switch warning
Emergency switch activated [S21] No voltage supply to transistor regulator [A1]. Harness problem. / Check emergency switch is not depressed. Check wiring.
C29
Service time warning
Time for next service. / Verify the service parameter. The parameter may not have been reset during the most recent service intervention. / See # 25 - Service interval on page 45 for setting of parameter #25
C31
Pressure sensor warning
Problem with the pressure sensor or the cabling [B10]. / Verify that the voltage is 24 V between cable 24 and 40 on the pressure sensor. Check voltage between cable 40 and 63 connected to the pressure sensor. The output voltage should be 0.5 Volt (unloaded machine) to 4,5 Volt (max. load)
C32
Pressure sensor varning, initial forks
Problem with the pressure sensor or the cabling [B11]. / Verify that the voltage is 24 V between cable 24 and 40 on the pressure sensor. Check voltage between cable 40 and 63 connected to the pressure sensor. The output voltage should be 0.5 Volt (unloaded machine) to 4,5 Volt (max. load)
C35
Steer servo - Internal temperature warning
Servo internal temperature has exceeded +68 °C / Steering activity too intensive.See also code E127
C41
Battery undervoltage warning
Battery voltage < 17 volt Battery parameter not correctly adjusted. / See # 21 Battery size on page 44 for setting of parameter #21 Battery due for charging
C42
Battery overvoltage warning
Battery voltage > 33 volt Fully charged battery and energy regeneration during hard reversing braking.
C43
Transistor regulator thermal cutback
Driving may be too intensive Defective transistor regulator [A1]
C50
Platform sensor active > 5 minutes with no truck activity [S19]
Sensor is continuously actuated. The sensor output has short-circuited or faulty sensor. / Inspect sensor operation.
C51
Logical fault in mast sensors
One of the signals from the fork height detection sensors is incorrect. / Verify correct operation of all fork height sensors, [S31], [S32] & [S12]
© TIEE SARL
Service Manual
7LOP10CW, 7LOP10CF
10- 65
