Rear Right Wheel Sensor Out Of Range High - JLG 1250AJP Troubleshooting Manual

SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING

1.263 REAR RIGHT WHEEL SENSOR OUT OF RANGE HIGH

Flash Code: 8-6
Rear right wheel sensor out of range high. The control system detected the rear right steer angle sensor value was above the
electrical maximum. This may be due to a short to battery or a wiring problem.
Note Pretest Instructions
1.263.1
1.263.2 Extend axles. Enable crab
steering mode. Go to ANA-
LYZER ⇒ DIAGNOSTICS ⇒
DRIVE ⇒ R REAR WHEEL
ANGL.
1.263.3 Swap rear right wheel sen-
sor [X239] with a sensor
that doesn't have a fault.
1.263.4
1.263.5 Disconnect rear right wheel
sensor [X239]
1.263.6 Disconnect rear right wheel
sensor [X239] and chassis
module J3 [X231]
1.263.7 Disconnect rear right wheel
sensor [X239] and rear left
steer passthru - 4 pos.
[X236]
1.263.8 Disconnect rear right steer
passthru - 4 pos. [X236].
Turn on machine.
1.263.9 Disconnect chassis module
J3. Turn on machine.
1-132
Test
Is the rear right steer angle sensor [X239]
installed and connected properly?
Observe angle while operating steering. Steer
fully to the left. Check all wheel angles. They
should be within 2 °. Return to R REAR WHEEL
ANGL analyzer screen. Steer to right about two
seconds while monitoring the value. Repeat
checks. Repeat process for entire swing of
wheel. Did the value, while steering, pause,
jump or act erratically? -OR- Was the right rear
wheel angle more than 2° difference from
other wheels?
Check faults. Does the new location now have
a wheel sensor out of range high fault?
Calibrate steering. Does fault clear?
Turn on machine. Is there 5VDC between rear
right wheel sensor socket A [X239.A.soc] and
socket C [X239.C.soc]?
Is there continuity between rear right wheel
sensor socket B [X239.B.soc] and chassis
module J3 socket 8 [X231.8.soc]?
Is there continuity between rear right wheel
sensor socket B [X239.B.soc] and rear right
steer passthru pin 2 [X236.2.pin]?
Is there 5VDC between rear right steer
passthru socket 1 [X237.1.soc] and socket 3
[X236.3.soc]?
Is there 5VDC between chassis module J3 pin
7 [X231.7.pin] and pin 9 [X231.9.pin]?
1250AJP
Result Corrective Action
Yes Go to step 1.263.2
No Repair as needed
Yes Go to step 1.263.3
No Go to step 1.263.5
Yes Replace sensor originally at the rear right wheel.
No Go to step 1.263.4
Yes Troubleshooting complete
No Go to step 1.263.5
Yes Keep sensor disconnected.
Go to step 1.263.6.
No Go to step 1.263.8
Yes Reprogram/replace ground module
No Keep rear right wheel sensor [X239] discon-
nected.
Go to step 1.263.7
Yes Repair harness between rear right steer passthru
socket 2 [X236.2.soc] and chassis module J3
socket 8 [X231.8.soc]
No Repair/replace harness between rear right wheel
sensor socket B [X239.B.soc] and rear right steer
passthru pin 2 [X236.2.pin]
Yes Repair/replace harness between rear right steer
passthru [X236] and rear right wheel sensor
[X239]
No Go to step 1.263.9
Yes Repair/Replace harness between rear right steer
passthru [X236] and chassis module J3 [X231]
No Replace chassis module
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