JLG 1250AJP Troubleshooting Manual page 52

SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Note Pretest Instructions
1.46.32 Disconnect the engine mod-
ule connector [X240] and
the BLAM module J4 con-
nector [X089]
1.46.33 Disconnect the engine mod-
ule can connector [X268]
and the BLAM module J4
connector [X089]
1.46.34 Disconnect the 3 position
load pin CAN pass thru con-
nector [X262]
1.46.35 Disconnect the tower lift
PVG connector [X066] and
the BLAM module J4 con-
nector [X089]
1.46.36 Disconnect the tower tele
PVG connector [X067] and
the BLAM module J4 con-
nector [X089]
1.46.37 Disconnect the main lift PVG
connector [X065] and the
BLAM module J4 connector
[X089]
1.46.38 Disconnect the bottom
swivel connector [X216]
1-52
Test
Does the CAN resistance between socket 3
and socket 4 of the BLAM module J4 connec-
tor [X089.3.soc X089.4.soc] measure 120Ω
and open circuit between socket 3 and shield
[X089.3.soc X089.5.soc] and open circuit
between socket 4 and shield [X089.4.soc
X089.5.soc]?
Does the CAN resistance between pin A and
pin B of the engine module CAN connector
[X268.A.pin X268.B.pin] measure 120Ω and
open circuit between pin A and pin C
[X268.A.pin X268.C.pin] and open circuit
between pin B and pin C [X268.B.pin
X268.C.pin]?
Does the CAN resistance between pin A and
pin B of the 3 position load pin can pass thru
connector [X262.A.pin X262.B.pin] measure
120Ω and open circuit between pin A and pin
C [X262.A.pin X262.C.pin] and open circuit
between pin B and pin C [X262.B.pin
X262.C.pin]?
Does the CAN resistance between socket 3
and socket 4 of the BLAM module J4 connec-
tor [X089.3.soc X089.4.soc] measure 120Ω
and open circuit between socket 3 and shield
[X089.3.soc X089.5.soc] and open circuit
between socket 4 and shield [X089.4.soc
X089.5.soc]?
Does the CAN resistance between socket 3
and socket 4 of the BLAM module J4 connec-
tor [X089.3.soc X089.4.soc] measure 120Ω
and open circuit between socket 3 and shield
[X089.3.soc X089.5.soc] and open circuit
between socket 4 and shield [X089.4.soc
X089.5.soc]?
Does the CAN resistance between socket 3
and socket 4 of the BLAM module J4 connec-
tor [X089.3.soc X089.4.soc] measure 120Ω
and open circuit between socket 3 and shield
[X089.3.soc X089.5.soc] and open circuit
between socket 4 and shield [X089.4.soc
X089.5.soc]?
Does the CAN resistance between socket 1
and socket 2 of the bottom swivel connector
[X216.1.soc X216.2.soc] measure 120Ω and
open circuit between socket 1 and shield
[X216.1.soc X216.3.soc] and open circuit
between socket 2 and shield [X216.2.soc
X216.3.soc]?
1250AJP
Result Corrective Action
Yes Replace the engine module
No Go to step 1.46.33
Yes Go to step 1.46.34
No Repair/replace the harness between the engine
module CAN connector [X268], the engine mod-
ule connector [X240], and the 3 position deutz
EMR2 chassis CAN connector [X084]
Yes Go to step 1.46.35
No Repair/Replace the harness between the 3 posi-
tion load pin can pass thru connector [X262] and
the engine module CAN connector [X268]
Yes Replace the tower lift PVG valve section
No Go to step 1.46.36
Yes Replace the tower tele PVG valve section
No Go to step 1.46.37
Yes Replace the main lift PVG valve section
No Repair/Replace the harness between the BLAM
module J4 connector [X089], the tower lift PVG
connector [X066], the tower tele PVG connector
[X067], the main lift PVG connector [X065], and
the 3 position load pin can pass thru connector
[X262]
Yes Go to step 1.46.39
No Repair/replace the slip ring connections in the
swivel
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