Thermal Limit (Soa); 33305 Steer Right Valve - Short To Ground; 33383 Beacon Light- Open Circuit; 33384 Beacon Light - Short To Ground - JLG 1930ES Service Maintenance Manual

SECTION 6 - DIAGNOSTIC TROUBLE CODES
3-3 Ground Output Driver
DTC FAULT MESSAGE
33305 STEER RIGHT VALVE -
SHORT TO GROUND
33383 BEACON LIGHT- OPEN
CIRCUIT
33384 BEACON LIGHT - SHORT
TO GROUND
33406 LiFT UP VALVE - SHORT
TO GROUND
33407 LIFT DN VALVE - SHORT
TO GROUND
33562 BEACON LIGHT - SHORT
TO BATTERY

4-2 Thermal Limit (SOA)

DTC FAULT MESSAGE
421 POWER MODULE TOO
HOT - PLEASE WAIT
422 DRIVING AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT
423 LIFT UP AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT
6-14
DESCRIPTION
Drive, Steer, and Lift Up Pre-
vented
Current flow to the Beacon Out-
put was not detected (J1-35
BEAC)
Excessive current flow to the
Beacon Output was detected
(J1-35 BEAC)
Drive, Steer, and Lift Up Pre-
vented
Lift Up and Down Prevented
Voltage from an external source
was detected on the Beacon
Output (J1-35 BEAC)
DESCRIPTION
The power module has reached
thermal cutout.
The drive portion of the power
module has reached thermal
limit.
The lift up portion of the power
module has reached thermal
limit.
– JLG Lift –
CHECK
• Excessive current flow to the Steer Right Solenoid was
detected (J2-18 NRV).
• ZAPI - HEALTH (Status LED) - ON
• Machine Setup's BEACON is 0=NO OR 1=YES
• No motion restrictions
• Latched
• ZAPI - HEALTH (Status LED) - ON
• Machine Setup's BEACON is 0=NO OR 1=YES
• No motion restrictions
• Latched
• 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
• Machine Setup's BEACON is 0=NO OR 1=YES
• No motion restrictions
• Latched
• 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 consump-
tion, ANALYZER -> 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 consump-
tion, ANALYZER -> DIAGNOSTICS -> TRACTION ->
ARM CUR over 120 Amps while driving on the level.
• 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.
3121166