Section 1. Fault Dictionary And Selected Troubleshooting; Air Filter Bypassed; Alternator Power Short To Ground; Aux Power Open Circuit - JLG 1250AJP Troubleshooting Manual

SECTION 1. FAULT DICTIONARY AND SELECTED TROUBLESHOOTING

For a cross-reference list of fault codes, see A.8 Service Fault Code Cross References on Pg. 9

1.1 AIR FILTER BYPASSED

Flash Code: 4-3
Air filter bypassed. This fault should never occur on properly configured machines. Reload ground module software or
replace the ground module.

1.2 ALTERNATOR POWER SHORT TO GROUND

Flash Code: 3-3
Alternator power short to ground. The alternator power output [X001.10] is shorted to ground. See 1.378 COMMON STG
PROCEDURE on Pg. 175.

1.3 AUX POWER OPEN CIRCUIT

Flash Code: 3-3
Auxiliary power open circuit. There is an open circuit in the auxiliary power output [X001.13]. See 1.377 COMMON STB OR
OC PROCEDURE on Pg. 174.

1.4 AUX POWER SHORT TO BATTERY

Flash Code: 3-3
Auxiliary power short to battery. The auxiliary power output [X001.13] is shorted to battery voltage. See 1.377 COMMON
STB OR OC PROCEDURE on Pg. 174.

1.5 AUX POWER SHORT TO GROUND

Flash Code: 3-3
Auxiliary power short to ground. The auxiliary power output [X001.13] is shorted to ground. See 1.378 COMMON STG PRO-
CEDURE on Pg. 175.

1.6 AXLE EXT STB OR OC

Flash Code: 8-6
Axle extend short to battery or open circuit. The control system detected a short to battery or open circuit on the axle exten-
sion valve output [X230.11] controlling the front axle extend solenoid [X206] and rear axle extend solenoid [X224]. See
1.377 COMMON STB OR OC PROCEDURE on Pg. 174.

1.7 AXLE EXT STG

Flash Code: 8-6
Axle extend short to ground. The control system detected a short to ground on the axle extension valves output [X230.11]
controlling the front axle extend solenoid [X206] and rear axle extend solenoid [X224]. See 1.378 COMMON STG PROCE-
DURE on Pg. 175.

1.8 AXLE RET STB OR OC

Flash Code: 8-6
Axle retract short to battery or open circuit. The control system detected a short to battery or open circuit on the axle retract
valves output [X230.12] controlling the front axles retract solenoid [X209] and the rear axles retract solenoid [X221]. See
1.377 COMMON STB OR OC PROCEDURE on Pg. 174.
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
1250AJP 1-35