Platform Control Valve Open Circuit; Platform Control Valve Short To Battery; Platform Control Valve Short To Ground; Platform Module Failure: Hwfs Code 1 - JLG 1250AJP Troubleshooting Manual

Note Pretest Instructions
1.243.7 Disconnect boom sensor
passthru - 19 position con-
nector [X045]
1.243.8 Take the following measure-
ment by backprobing
1.243.9 Take the following measure-
ment by backprobing
1.243.10 Disconnect the ground
module J8 connector
[X008]. Turn machine on in
platform mode

1.244 PLATFORM CONTROL VALVE OPEN CIRCUIT

Flash Code: 3-4
Platform control valve open circuit. The platform dump valve output [X002.3] is open. See 1.377 COMMON STB OR OC
PROCEDURE on Pg. 174.

1.245 PLATFORM CONTROL VALVE SHORT TO BATTERY

Flash Code: 3-4
Platform control valve short to battery. The platform dump valve output [X002.3] is shorted to battery. See 1.377 COMMON
STB OR OC PROCEDURE on Pg. 174.

1.246 PLATFORM CONTROL VALVE SHORT TO GROUND

Flash Code: 3-4
Platform control valve short to ground. The platform dump valve output [X002.3] is shorted to ground. See 1.378 COMMON
STG PROCEDURE on Pg. 175.

1.247 PLATFORM MODULE FAILURE: HWFS CODE 1

Flash Code: 9-9
Platform module failure: hardware failsafe code 1. Platform module V(low) FET has failed. A power cycle is required.
Note Pretest Instructions
1.247.1 Cycle power

1.248 PLATFORM MODULE SOFTWARE UPDATE REQUIRED

Flash Code: 9-9
Platform module software update required. The platform module software is a different major version than the ground mod-
ule. Load new platform module software.
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Turn machine on in platform mode. Is there
11VDC or more between socket 12 and socket
16 of the tower boom passthru - 19 position
connector [X045.12 X045.16]?
Turn machine on in platform mode. Is there
11VDC or more between pin 12 and pin 16 of
the MTB pass thru - 19 position connector
[X043.12.pin X043.16.pin]?
Turn machine on in platform mode. Is there
11VDC or more between pin 4 and pin 3 of the
ground module J8 connector [X008.4
X008.3]?
Is there 11VDC or more between pin 4 and pin
3 of the ground module J8 connector [X008.4
X008.3]?
Test
Does fault clear?
1250AJP
Result Corrective Action
Yes Repair/replace harness between the tower boom
passthru - 19 position connector [X045] and the
boom sensor passthru - 19 position connector
[X050]
No Go to step 1.243.8
Yes Repair/replace harness between the MTB pass
thru - 19 position connector [X043] and the tower
boom passthru - 19 position connector [X045]
No Go to step 1.243.9
Yes Repair/replace harness between the ground
module J8 connector [X008] and the MTB pass
thru - 19 position connector [X043]
No Go to step 1.243.10
Yes Repair/replace harness between the ground
module J8 connector [X008] and the MTB pass
thru - 19 position connector [X043]
No Replace the ground module
Result Corrective Action
Yes Troubleshooting complete
No Replace platform module
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