JLG 1250AJP Troubleshooting Manual page 49

Note Pretest Instructions
1.46.10 Disconnect the 12 position
BLAM passthru connector
[X058] and the ground mod-
ule J7 connector [X007]
1.46.11 Disconnect the BLAM side
of the 3 way CAN connector
in the main terminal box
[X269] and the ground mod-
ule J7 connector [X007]
1.46.12 Disconnect the ground
module side of the 3 way
CAN connector in the main
terminal box [X014] and the
ground module J7 connec-
tor [X007]
1.46.13 Disconnect the main boom
angle sensor 1 connector
[X048] and the BLAM mod-
ule J1 connector [X086]
1.46.14 Disconnect the main boom
angle sensor 2 connector
[X049] and the BLAM mod-
ule J1 connector [X086]
1.46.15 Disconnect the ground
module J7 connector
[X007] and the BLAM mod-
ule J1 connector [X086]
1.46.16 Disconnect the platform
module J7 connector
[X007]
1.46.17 Disconnect the platform
module J7 connector
[X007]
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Is there CAN HI continuity between socket 10
of the 12 position BLAM passthru connector
[X058.10.soc] and socket 13 of the ground
module J7 connector [X007.13.soc] and CAN
LO continuity between socket 11 of the 12
position BLAM passthru connector
[X058.11.soc] and socket 24 of the ground
module J7 connector [X007.24.soc]?
Is there CAN HI continuity between pin A of the
3 way CAN connector [X269.A.pin] and
socket 13 of the ground module J7 connector
[X007.13.soc] and CAN LO continuity
between pin B of the 3 way CAN connector
[X269.B.pin] and socket 24 of the ground
module J7 connector [X007.24.soc]?
Is there CAN HI continuity between socket A of
the 3 way CAN connector [X014.A.soc] and
socket 13 of the ground module J7 connector
[X007.13.soc] and CAN LO continuity
between socket B of the 3 way CAN connector
[X269.B.soc] and socket 24 of the ground
module J7 connector [X007.24.soc]?
Does the CAN resistance between socket 6
and socket 7 of the BLAM module J1 connec-
tor [X086.6.soc X086.7.soc] measure 120Ω
and open circuit between socket 6 and shield
[X086.6.soc] and open circuit between socket
7 and shield [X086.7.soc]?
Does the CAN resistance between socket 6
and socket 7 of the BLAM module J1 connec-
tor [X086.6.soc X086.7.soc] measure 120Ω
and open circuit between socket 6 and shield
[X086.6.soc] and open circuit between socket
7 and shield [X086.7.soc]?
Does the CAN resistance between socket 6
and socket 7 of the BLAM module J1 connec-
tor [X086.6.soc X086.7.soc] measure 120Ω
and open circuit between socket 6 and shield
[X086.6.soc] and open circuit between socket
7 and shield [X086.7.soc]?
Does the CAN resistance between socket 31
and socket 30 of the platform module J7 con-
nector [X169.31.soc X169.30.soc] measure
120Ω and open circuit between socket 6 and
shield [X086.6.soc] and open circuit between
socket 7 and shield [X086.7.soc]?
Does the CAN resistance between pin 31 and
pin 30 of the platform module J7 connector
[X169.31.pin X169.30.pin] measure 120Ω
and open circuit between pin 31and shield
[X169.32.pin] and open circuit between pin
30 and shield [X169.32.pin]?
1250AJP
Result Corrective Action
Yes Repair/Replace the harness between the BLAM
module J1 connector [X086] and the 12 position
BLAM passthru connector [X058]
No Go to step 1.46.11
Yes Repair/Replace the harness between the 12 posi-
tion BLAM passthru connector [X058] and the 3
way CAN connector in the main terminal box
[X269]
No Go to step 1.46.12
Yes Repair/Replace the 3 way CAN connector in the
main terminal box [X014 X269 X270]
No Repair/Replace the harness between the 3 way
CAN connector in the main terminal box [X014]
and the ground module J7 connector [X007]
Yes Replace main boom angle sensor 1
No Go to step 1.46.14
Yes Replace main boom angle sensor 2
No Go to step 1.46.15
Yes Replace the ground module
No Go to step 1.46.16
Yes Go to step 1.46.17
No Go to step 1.46.18
Yes Check the connections at the platform module J7
connector [X169]
No Replace the platform module
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