JLG 1250AJP Troubleshooting Manual page 55

Note Pretest Instructions
1.50.6 Disconnect 12-pin Deutsch
connector [X058] and
Power Down Relay [X011]
1.50.7 Disconnect 12-pin Deutsch
connector [X058] and
ground control module J3
[X008]
1.50.8 Plug the tower boom angle
sensor connector #2 (Left)
[X100] into the #1 (right)
sensor and the tower boom
angle sensor #1 (Right)
connector [X099] into the
#2 (left) sensor. Read
faults.
1.50.9 Disconnect right tower
boom angle sensor connec-
tor [X099] and BLAM J2
[X087]
1.50.10 Disconnect the right angle
sensor [X099] and tower
angle sensor 1 passthru
[X095] (See Figure 2-7.
Main Valve Area Connectors
on Pg. 189 for location).
1.50.11 Disconnect the #1 right side
tower boom angle sensor
passthru - 4 position
[X095]. Turn on the
machine.
1.50.12 Disconnect battery busbar -
12 pos. [X097] and ground
busbar - 12 pos. [X098]
1.50.13 Disconnect the #1 right side
tower boom angle sensor
[X099]. Turn on the
machine.
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Is there a short between 12-pin Deutsch con-
nector socket 2 [X058.2.soc] and Power
Down Relay socket 87 [X011.87.soc]?
Is there a short between 12-pin Deutsch con-
nector socket 2 [X058.2.soc] and ground
control module J3 socket 3 [X008.3.soc]?
Does the BOOM ANGLE SENSOR #2 COM-
MUNICATIONS FAULT appear?
Is there continuity between right angle sensor
socket 2 [X099.2.soc] and BLAM J2 socket 8
[X087.8.soc]?
Is there continuity between right angle sensor
socket 2 [X099.2.soc] and tower angle sensor
1 passthru [X095.2.soc]? Also, are the con-
tacts free from damage?
Is there 12VDC between the #1 right side
tower boom angle sensor passthru pin 1
[X095.1.pin] and pin 3 [X095.3.pin]?
Is there 12VDC between battery busbar socket
5 [X097.5.soc] and ANY of the sockets in
ground busbar [X098]?
Is there 12VDC between the #1 right side
tower boom angle sensor harness connector
closest to the sensor socket 1 [X099.1.soc]
and socket 3 [X099.3.soc]?
1250AJP
Result Corrective Action
Yes Leave 12-pin Deutsch connector [X058] discon-
nected. Go to step 1.50.7.
No Repair/Replace harness between 12-pin Deutsch
connector [X058], including the bus connector
itself and the Power Down Relay [X011]
Yes Ensure both contacts of the 12-pin Deutsch con-
nector socket 2 [X058.2] are seated properly in
the connector bodies and that there is continuity
between all pins.
No Repair/replace harness and or connectors
between 12-pin Deutsch connector [X058] and
ground control module J3 socket 3 [X008.3]
Yes Replace sensor #1
No Go to step 1.50.9
Yes Go to step 1.50.11
No Leave the right angle sensor [X099] discon-
nected. Go to step 1.50.10.
Yes Repair/replace harness between tower angle
sensor 1 pass through [X095] and BLAM J2
[X087]
No Repair/replace harness between right angle sen-
sor socket 2 [X099.2.soc] and tower angle sen-
sor 1 passthru - 4 position [X095]
Yes Leave the connector disconnected and machine
on. Go to step 1.50.13.
No Go to step 1.50.12
Yes Repair/replace harness and or connectors
between #1 right side tower boom angle sensor
passthru [X095] and the 12-pin V-Batt+ bus
connector sockets [X097] and/or 12-pin ground
bus connector sockets [X098].
No Repair/replace harness and or connectors
between battery busbar - 12 pos. [X097] and 12-
pin Deutsch connector socket 2 [X058.2.soc]
and/or the ground busbar - 12 pos. [X098] and
12-pin Deutsch connector socket 5 [X058.5.soc]
Yes Leave the connector disconnected. Go to step
1.50.14.
No Repair/replace the harness and or connectors
between the #1 right side tower boom angle sen-
sor [X099] and #1 right side tower boom angle
sensor passthru [X095]
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