JLG 1230ES, Руководство по обслуживанию и ремонту

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SECTION 8 - DIAGNOSTIC TROUBLE CODES
8-10 – JLG Lift – 3121222
2510
DRIVE PREVENTED -
BRAKES NOT RELEASING
While driving on a level surface,
armature current was > 150A for
five seconds. Brakes assumed to
not be releasing properly. • Ensure vehicle is not stuck on something preventing movement.
• Check / repair drive motor wiring, brakes or mechanical issues.
2511
ELEV ANGLE SENSOR
FAULTY - NOT MOUNTED
The input voltage from the ele-
vation angle sensor indicates
the elevation angle sensor is not
mounted.
• Check that the elevation angle sensor is securely mounted.
• Check that the elevation angle sensor mechanisms are intact.
• Replace elevation angle sensor.
2512
ELEV ANGLE SENSOR
NOT DETECTING
CHANGE
The input voltage from the ele-
vation angle sensor did not
change while vehicle was lifting
up.
• Check that the elevation angle sensor is securely mounted.
• Check elevation angle sensor is not jammed or obstructed.
• If there are any other elevation angle sensor, joystick, or lift up faults,
troubleshoot them before continuing.
• Replace elevation angle sensor.
3-1 Line Contactor Open Circuit
DTC FAULT MESSAGE DESCRIPTION CHECK
311
OPEN CIRCUIT LINE
CONTACTOR
The power modules line contac-
tor did not close when ener-
gized. Drive, steer and lift up
prevented.
• Check contactor main contact wiring to battery (+) terminal and power
controller terminal B+.
• Contactor solenoid resistance should measure about 52 Ohms.
• Check contactor solenoid wiring to power module 12 position connector
terminal 8 and ground board terminal J1-19.
• Check that power module 12 position connector terminal 8 goes from 24V
to near 0V while contactor should be closing. If this happens replace con-
tactor.
• Replace the line contactor.
312
CONTACTOR DRIVER
PERMANENTLY OFF
The power modules line contac-
tor drive circuitry failed to ener-
gize when requested. Drive,
steer and lift up prevented.
• Check continuity between contactor connector pin 1 and ground board
socket J1-19.
• Contactor solenoid resistance should measure about 52 Ohms.
• Check continuity between contactor connector pin 2 and power module
connector socket 8.
• Replace power module.
3-2 Line Contactor Short Circuit
DTC FAULT MESSAGE DESCRIPTION CHECK
321
LINE CONTACTOR
MISWIRED ON OR
WELDED
Battery voltage was present at
the power module B+ terminal
at power up. Drive, steer and lift
up prevented.
• Check wiring of contactor.
• Check resistance between the studs of the contactor while disconnected
from the machine.
• Check contactor main contact wiring to battery (+) terminal and power
module terminal B+.
• Check continuity between contactor connector pin 1 and ground board
socket J1-19.
• Check continuity between contactor connector pin 2 and power module
12 position connector terminal 8.
• Measure voltage between power model B+ and B- terminals. If 24V is
present, replace line contactor.
• Replace power module.
2-5 Function Prevented
DTC FAULT MESSAGE DESCRIPTION CHECK