Footswitch Selected Before Start; Front Left Wheel Blocked - JLG 1250AJP Troubleshooting Manual

Note Pretest Instructions
1.93.28 For help with this type of test
see 6.2 Continuity Mea-
surement Over Long Dis-
tances on Pg. 321
1.93.29 Disconnect the platform
module J7 connector
[X167]
1.93.30 Disconnect the chassis
module J1 connector
[X229]
1.93.31 Disconnect the chassis
module J1 connector
[X229]
1.93.32 Disconnect the Top Swivel
connector [X083]
1.93.33 Disconnect the Bottom
Swivel connector [X216]
1.93.34 Disconnect the BLAM mod-
ule J1 connector [X086]

1.94 FOOTSWITCH SELECTED BEFORE START

Flash Code: 2-3
Footswitch selected before start. Notification that the footswitch was selected before starting the machine. Release the foot-
switch before starting the machine.

1.95 FRONT LEFT WHEEL BLOCKED

Flash Code: 8-6
Front left wheel blocked. The control system is unable to steer the front left wheel. Steering was commanded for at least 1.3
seconds without sensing an appropriate change in angle from the front left steer angle sensor. This could be caused by a
mechanical blockage, a hydraulic problem or a faulty angle sensor.
Note Pretest Instructions
1.95.1
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Is there CAN HI continuity between terminal 6
of the chassis module J1 connector [X229.6]
and terminal 13 of the ground module J7 con-
nector [X007.13] and CAN LO continuity
between terminal 7 of the chassis module J1
connector [X229.7] and terminal 24 of the
ground module J7 connector [X007.24]?
Does the CAN resistance between pin 31 and
pin 30 of the platform module J7 connector
[X169.31.pin X169.30.pin] measure 120Ω?
Does the CAN resistance between pin 6 and
pin 10 of the chassis module J1 connector
[X229.6.pin X229.10.pin] measure 120Ω?
Does the CAN resistance between socket 9
and socket 10 of the chassis module J1 con-
nector [X229.9.soc X229.10.soc] measure
0Ω?
Does the CAN resistance between socket 1
and socket 2 of the Top Swivel connector
[X083.1.soc X083.2.soc] measure 120Ω?
Does the CAN resistance between socket 1
and socket 2 of the Bottom Swivel connector
[X216.1.soc X216.2.soc] measure 120Ω?
Does the CAN resistance between socket 6
and socket 7 of the BLAM module J1 connec-
tor [X087.6.soc X087.7.soc] measure
120Ω?
Test
Is the front left wheel kept from moving?
1250AJP
Result Corrective Action
Yes Check all CAN connections for moisture and bad
connections
No Check the RED, BLACK, and Shield wires
between the chassis module J1 connector
[X229], through the swivel [X083 X216] and the
ground module J7 connector [X007]
Yes Go to step 1.93.30
No Replace the platform module
Yes Leave the chassis module disconnected and go
to step 1.93.31
No Replace the chassis module
Yes Go to step 1.93.32
No Repair/Replace the Chassis harness or CAN ter-
mination jumper wire between socket 9 and
socket 10 of the platform module J7 connector
[X229.9.soc X229.10.soc]
Yes Go to step 1.93.33
No Go to step 1.93.34
Yes Repair the RED, BLACK, and/or Shield wires
between the Bottom Swivel connector [X216]
and the chassis module J1 connector [X229]
No Replace the Swivel
Yes Repair the RED, BLACK, and/or Shield wires
between the Top Swivel connector [X083] and the
BLAM module J1 connector [X086]
No Repair the RED, BLACK, and/or Shield wires
between the ground module J7 connector [X007]
and the BLAM module J1 connector [X086]
Result Corrective Action
Yes Free the wheel from any obstructions
No Go to step 1.95.2
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