JLG 3246ES Service Manual - Manual (Page 166)

SECTION 6 - DIAGNOSTIC TROUBLE CODES
6-14 – JLG Lift – 3121166
33305 STEER RIGHT VALVE -
SHORT TO GROUND
Drive, Steer, and Lift Up Pre-
vented • Excessive current flow to the Steer Right Solenoid was
detected (J2-18 NRV).
• ZAPI - HEALTH (Status LED) - ON
33406 LiFT UP VALVE - SHORT
TO GROUND
Drive, Steer, and Lift Up Pre-
vented • Excessive current flow to the Lift Up Solenlid was
detected at (J2-2 PDV or J2-16 NDV).
• ZAPI - HEALTH (Status LED) - ON
33407 LIFT DN VALVE - SHORT
TO GROUND
Lift Up and Down Prevented • Excessive current flow to the Lift Down Solenoid was
detected (J2-16 NDV).
• ZAPI - HEALTH (Status LED) - ON
4-2 Thermal Limit (SOA)
DTC FAULT MESSAGE DESCRIPTION CHECK
421 POWER MODULE TOO
HOT - PLEASE WAIT The power module has reached
thermal cutout. • 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 consump-
tion, ANALYZER -> DIAGNOSTICS -> TRACTION ->
ARM CUR over 120 Amps while driving on the level.
422 DRIVING AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT The drive portion of the power
module has reached thermal
limit. • Check for jammed or obstructed drive motors.
• Check for excessively high traction current consump-
tion, ANALYZER -> DIAGNOSTICS -> TRACTION ->
ARM CUR over 120 Amps while driving on the level.
423 LIFT UP AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT The lift up portion of the power
module has reached thermal
limit. • Check for jammed or obstructed arm stack or pivot
bushing.
• Check for excessively high current consumption in the
pump, ANALYZER -> DIAGNOSTICS -> PUMP -> PUMP
CUR over 130 Amps with an empty deck.
• Refer to Pump Motor Electrical Evaluation in Section
4.8.
4-4 Battery Supply
DTC FAULT MESSAGE DESCRIPTION CHECK
441 BATTERY VOLTAGE TOO
LOW - SYSTEM SHUT-
DOWN The power module momen-
tarily measured battery voltage
under 14.5V between ground
board J1-39 and ground board
J1-40. • Recharge batteries or check for damaged batteries.
• Check battery charger function.
442 BATTERY VOLTAGE TOO
HIGH - SYSTEM SHUT-
DOWN The power module momen-
tarily measured battery voltage
> 37.0V. • May be due to improper battery charging or incorrect
voltage batteries being used.
443 LSS BATTERY VOLTAGE
TOO HIGH The load sensing system mod-
ule momentarily measured bat-
tery voltage > 34.0V. • May be due to improper battery charging or incorrect
voltage batteries being used.
• Refer to Section 2.3: Troubleshooting in the LSS man-
ual, 3124288.
3-3 Ground Output Driver
DTC FAULT MESSAGE DESCRIPTION CHECK