Thermal Limit (Soa); 33297 Left Brake - Short To Ground; 33298 Steer Left Valve - Short To Ground; 33299 Line Contactor Coil - Short To Battery - JLG 1930ES Service Maintenance Manual

SECTION 6 - DIAGNOSTIC TROUBLE CODES
3-3 Ground Output Driver
DTC FAULT MESSAGE
33297 LEFT BRAKE - SHORT TO
GROUND
33298 STEER LEFT VALVE - SHORT
TO GROUND
33299 LINE CONTACTOR COIL -
SHORT TO BATTERY
33302 NEGATIVE SUPPLY - SHORT
TO BATTERY
33303 NEGATIVE SUPPLY - SHORT
TO GROUND
33304 RIGHT BRAKE - SHORT TO
GROUND
33305 STEER RIGHT VALVE -
SHORT TO GROUND
33406 LiFT UP VALVE - SHORT TO
GROUND
33407 LIFT DN VALVE - SHORT TO
GROUND

4-2 Thermal Limit (SOA)

DTC FAULT MESSAGE
421 POWER MODULE TOO HOT -
PLEASE WAIT
422 DRIVING AT CUTBACK -
POWER MODULE CURRENT
LIMIT
6-12
DESCRIPTION
Drive and Steer Prevented
Drive, Steer and Lift Up Prevented
Drive, Lift and Steer Prevented
Drive, Lift, and Steer Prevented
Drive, Lift and Steer Prevented
Drive, and Steer Prevented
Drive, Steer, and Lift Up Prevented
Drive, Steer, and Lift Up Prevented
Lift Up and Down Prevented
DESCRIPTION
The power module has reached thermal
cutout.
The drive portion of the power module
has reached thermal limit.
– JLG Lift –
CHECK
• Excessive current flow to the Left Brake Solenoid was detected (J1-
34 NLB).
• ZAPI - HEALTH (Status LED) - ON
• Excessive current flow to the steer left solenoid detected (J2-9
NLV).
• ZAPI - HEALTH (Status LED) - ON
• Voltage from an external source was detected on the Negative
Main Line Contactor.
• ZAPI - HEALTH (Status LED) - ON
• At power-up, the system module detected an external short on
J1-12, J1-17, J1-23, J2-14 or J2-15. Normally these pins are
grounded by the System Module. All functions are prevented to
protect the control system.
• ZAPI - HEALTH (Status LED) - ON
• At power-up, the System Module detected an external short on
J1-12, J1-17, J2-14 or J2-15. Normally these pins are grounded
by the System Module. Since the external ground may compro-
mise integrity, all functions will be prevented.
• ZAPI - HEALTH (Status LED) - ON
• Excessive current flow to the Right Brake solenoid was detected
(J1-33 NRB).
• ZAPI - HEALTH (Status LED) - ON
• Excessive current flow to the Steer Right Solenoid was detected
(J2-18 NRV).
• ZAPI - HEALTH (Status LED) - ON
• Excessive current flow to the Lift Up Solenlid was detected at (J2-
2 PDV or J2-16 NDV).
• ZAPI - HEALTH (Status LED) - ON
• Excessive current flow to the Lift Down Solenoid was detected
(J2-16 NDV).
• ZAPI - HEALTH (Status LED) - ON
CHECK
• Power down and allow to cool.
• Do not operate in ambients over 140° F (60° C).
• Check for jammed or obstructed drive motors.
• Check for excessively high current consumption in the pump,
ANALYZER -> DIAGNOSTICS -> PUMP -> PUMP CUR over 130
Amps with an empty deck.
• Check for excessively high traction current consumption, ANA-
LYZER -> DIAGNOSTICS -> TRACTION -> ARM CUR over 120
Amps while driving on the level.
• Check for jammed or obstructed drive motors.
• Check for excessively high traction current consumption, ANA-
LYZER -> DIAGNOSTICS -> TRACTION -> ARM CUR over 120
Amps while driving on the level.
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