Front Right Wheel Sensor Fault - Check Mounting - JLG 1250AJP Troubleshooting Manual

1.100 FRONT RIGHT WHEEL SENSOR FAULT - CHECK MOUNTING

Flash Code: 8-6
Front right wheel sensor fault - check mounting. The control system detected the front right steer angle sensor value was
below the mechanical minimum angle while the wheel was detected as blocked. The sensor may be mounted improperly or
the sensor may be faulty.
Note Pretest Instructions
1.100.1 Check faults
1.100.2 Disconnect front right steer
sensor [X200]
1.100.3
1.100.4 Extend axles. Go to ANA-
LYZER ⇒ DIAGNOSTICS ⇒
DRIVE ⇒R FRONT WHEEL
ANGL
1.100.5 Swap front right wheel sen-
sor [X200] with a sensor
that doesn't have a fault.
1.100.6
1.100.7 Disconnect front right wheel
sensor [X200]
1.100.8 Disconnect front right wheel
sensor [X200] and chassis
module J3 [X231]
1.100.9 Disconnect front right wheel
sensor [X200] and front
right steer passthru - 4 pos.
[X201]
1.100.10 Disconnect front right steer
passthru - 4 pos. [X201].
Turn on machine.
1.100.11 Disconnect chassis module
J3. Turn on machine.
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Is the fault FRONT RIGHT WHEEL BLOCKED
present?
Do the connectors have any loose, damaged,
corroded contacts or moisture inside?
Is the front right wheel sensor [X200] in tact
and properly installed? This includes checking
that the sensor pin will turn the sensor and the
sensor is properly tensioned.
Monitor value while operating steering. Steer
fully to the left, then fully to the right. Does the
displayed angle ever climb above ±42.11?
-OR- Does the value pause, jump or act errati-
cally?
Check faults. Does the new location now have
a wheel sensor fault?
Calibrate steering. Does fault clear?
Turn on machine. Is there 5VDC between front
right wheel sensor socket A [X200.A.soc] and
socket C [X200.C.soc]?
Is there continuity between front left wheel
sensor socket B [X200.B.soc] and chassis
module J3 socket 2 [X231.2.soc]?
Is there continuity between front right wheel
sensor socket B [X200.B.soc] and front right
steer passthru pin 2 [X201.2.pin]?
Is there 5VDC between front right steer
passthru socket 1 [X201.1.soc] and socket 3
[X201.3.soc]?
Is there 5VDC between chassis module J3 pin
1 [X231.1.pin] and pin 3 [X231.3.pin]?
1250AJP
Result Corrective Action
Yes Troubleshoot that first
No Go to step 1.100.2
Yes Repair as needed
No Go to step 1.100.3
Yes Go to step 1.100.4
No Reinstall and recheck
Yes Repair/replace sensor and mounting as needed
No Go to step 1.100.5
Yes Replace sensor originally at the front right wheel.
No Go to step 1.100.6
Yes Troubleshooting complete
No Go to step 1.100.7
Yes Keep sensor disconnected.
Go to step 1.100.8.
No Go to step 1.100.10
Yes Reprogram/replace ground module
No Keep front right wheel sensor [X200] discon-
nected.
Go to step 1.100.9
Yes Repair harness between front right steer passthru
socket 2 [X201.2.soc] and chassis module J3
socket 2 [X231.2.soc]
No Repair/replace harness between front right wheel
sensor socket B [X200.B.soc] and front right
steer passthru pin 2 [X201.2.pin]
Yes Repair/replace harness between front right steer
passthru [X201] and front right wheel sensor
[X200]
No Go to step 1.100.11
Yes Repair/Replace harness between front right steer
passthru [X201] and chassis module J3 [X231]
No Replace chassis module
1-83