SECTION 8 - DIAGNOSTIC TROUBLE CODES
8-12
– JLG Lift –
3121222
339
STEER RIGHT SHORT TO
BATTERY
The ground board detected
voltage while the steer right
solenoid was commanded off.
•
Check for continuity through this circuit. Steer right solenoid resistance
should measure about 30 Ohms. The steer right solenoid is powered with
24V from ground board J1-22, and its ground is to ground board J1-30,
37.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3310
STEER RIGHT OPEN CIR-
CUIT
The ground board did not
detect current flow to the steer
right solenoid during normal
operation.
•
Check for continuity through this circuit. Steer right solenoid resistance
should measure about 30 Ohms. The steer right solenoid is powered with
24V from ground board J1-22, and its ground is to ground board J1-30,
37.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3311
GROUND ALARM
SHORT TO BATTERY
The ground board detected
voltage while the ground alarm
was commanded off.
•
Check for continuity through this circuit. The ground alarm solenoid is
powered with 24V from ground board J1-19, its PWM signal is from
ground board J1-28, and its ground is to ground board J1-30, 37. There
should be about 1500 Ohms between ground alarm connector pin 1 and
pin 3.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3312
LEFT BRAKE SHORT TO
BATTERY
The ground board detected
voltage while the left brake was
commanded off.
•
Check for continuity through this circuit. The left brake is powered with
24V from ground board J1-23, and its ground is to ground board J1-30,
37. Brake solenoid resistance should measure about 20 Ohms.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3313
RIGHT BRAKE SHORT TO
BATTERY
Voltage was detected on the
right brake solenoid when the
ground board output was com-
manded off during power-up.
•
Check for continuity through this circuit. Brake solenoid resistance should
measure about 20 Ohms. The right brake is powered with 24V from
ground board J1-24, and its ground is to ground board J1-30, 37.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3314
LEFT BRAKE OPEN CIR-
CUIT
Current flow to the left brake
solenoid was not detected dur-
ing normal left brake operation.
•
Check for continuity through this circuit. The left brake is powered with
24V from ground board J1-23, and its ground is to ground board J1-30,
37. Brake solenoid resistance should measure about 20 Ohms.
•
Inspect the wiring for physical damage.
•
Replace ground board.
3315
RIGHT BRAKE OPEN CIR-
CUIT
The ground board did not
detect current flow to the right
brake during normal operation.
•
Check for continuity through this circuit. Brake solenoid resistance should
measure about 20 Ohms. The right brake is powered with 24V from
ground board J1-24, and its ground is to ground board J1-30, 37.
•
Inspect the wiring for physical damage.
•
Replace ground board.
33297
LEFT BRAKE - SHORT TO GROUND Drive and Steer Prevented
•
Excessive current flow to the Left Brake Solenoid was
detected (J1-34 NLB).
•
ZAPI - HEALTH (Status LED) - ON
33298
STEER LEFT VALVE - SHORT TO
GROUND
Drive, Steer and Lift Up Prevented
•
Excessive current flow to the steer left solenoid detected (J2-9 NLV).
•
ZAPI - HEALTH (Status LED) - ON
33299
LINE CONTACTOR COIL - SHORT TO
BATTERY
Drive, Lift and Steer Prevented
•
Voltage from an external source was detected on the Negative Main Line
Contactor.
•
ZAPI - HEALTH (Status LED) - ON
3-3 Ground Output Driver
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
Summary of Contents for 1230ES
Page 1: ...AS NZS Service and Maintenance Manual Model s 1230ES P N 3121222 June 22 2017 ...
Page 2: ...NOTES ...
Page 24: ...SECTION 1 MACHINE SPECIFICATIONS 1 12 JLG Lift 3121222 NOTES ...
Page 32: ...SECTION 2 GENERAL SERVICE INFORMATION 2 8 JLG Lift 3121222 NOTES ...
Page 78: ...SECTION 4 BASE COMPONENTS 4 40 JLG Lift 3121222 NOTES ...
Page 104: ...SECTION 5 CONTROL COMPONENTS 5 26 JLG Lift 3121222 NOTES ...
Page 158: ...SECTION 8 DIAGNOSTIC TROUBLE CODES 8 22 JLG Lift 3121222 NOTES ...
Page 198: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 40 JLG Lift 3121222 ...
Page 199: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 3121222 JLG Lift 9 41 ...
Page 200: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 42 JLG Lift 3121222 ...
Page 202: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 44 JLG Lift 3121222 NOTES ...