Lt Fnt Steer Lt Stb Or Oc - JLG 1250AJP Troubleshooting Manual

1.177 LT FNT STEER LT STB OR OC

Flash Code: 8-6
Left front steer left short to battery or open circuit. The control system detected a short to battery or open circuit on the chas-
sis module left front steer left valve output [X233.4].
Note Pretest Instructions
1.177.1 Connect analyzer and read
fault log
1.177.2 Disconnect chassis module
J1 [X230] and battery nega-
tive terminal [X117]
1.177.3
1.177.4 Disconnect the left front
steer left solenoid connector
[X210]. Measure the sole-
noid resistance.
1.177.5 Disconnect the left front
steer left solenoid connector
[X210] and chassis module
J5 [X233].
1.177.6 Disconnect positive battery
terminal [X116], left front
steer left solenoid [X210]
and chassis module J5
[X233].
1.177.7 Check black ground wire
between terminal 5 of the
bottom (chassis) swivel
connector [X216.5.soc] and
the left front steer left sole-
noid connector [X210]
1.177.8 Disconnect Upper Swivel
connector [X083] and nega-
tive battery terminal [X117].
1.177.9 Disconnect negative battery
terminal [X117] and Lower
Swivel connector [X216].
1.177.10 Disconnect negative battery
terminal [X117]
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Does fault log shows other steer STB or OC
faults.
Check for an open between chassis module J1
[X229] socket 4 [X229.4.soc] and the nega-
tive battery terminal
Is there a bad connection at chassis module J5
connector [X233] or the left front steer left
solenoid connector [X210]?
Is the solenoid resistance about 4.9 Ω?
Are all contacts good and is there continuity
between left front steer left solenoid connector
yellow wire and Chassis module J5 socket 4
[X233.4.soc]?
Is there a short between left front steer left
solenoid [X210] YELLOW 9-1 wire and posi-
tive battery terminal [X116]?
Are there loose, bent, broken or corroded
wires or contacts or moisture in the connec-
tors?
Is there an open between socket 5
[X083.5.soc] and battery negative terminal
[X117]?
Is there an open between negative battery ter-
minal [X117] and Lower Swivel connector pin
5 [X216.5.pin]?
Is there an open between Auxiliary Power
Pump negative terminal and the negative bat-
tery terminal [X117].
1250AJP
Result Corrective Action
Yes Go to step 1.177.2
No Go to step 1.177.4
Yes Leave negative battery terminal disconnected.
Go to step 1.177.8
No Go to step 1.177.3
Yes Re-connect connector
No Go to step 1.177.4
Yes Go to step 1.177.5
No Replace solenoid
Yes Leave solenoid connector and chassis module J5
disconnected. Go to step 1.177.6
No Repair/Replace harness
Yes Repair/Replace harness
No Go to step 1.177.7
Yes Repair/Replace harness
No Repair/Replace connector as needed.
Yes Leave negative battery terminal disconnected.
Go to step 1.177.10
No Leave negative battery terminal disconnected.
Go to step 1.177.9
Yes Replace swivel
No Repair/replace harness to Chassis module.
Yes Repair/replace harness between Auxiliary Power
Pump negative terminal and negative battery ter-
minal.
No Repair/replace harness between Upper Swivel
connector and Auxiliary Power Pump negative
connector.
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