New Holland WorkMaster 50 Service Manual page 852

With the key in the OFF position, use a multimeter to perform the following continuity checks on the vehicle
harness (VE) side :
From
X-9001 pin A11
A. If the specified values are measured, leave the ECU A-9000 connectors X-9102 and X-9001 disconnected.
Then, continue to Step 9.
B. If the specified values are not measured, there is a failure in the rail pressure sensor B-9004 voltage supply
wiring. Use the appropriate service manual, if necessary, to locate and repair the failed conductor.
9. Check the camshaft speed sensor B-9017 voltage supply wiring.
With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness
(EN) side :
From
X-9008 pin 3
With the key in the OFF position, use a multimeter to perform the following continuity checks on the engine
harness (EN) side :
From
X-9008 pin 3
X-9008 pin 1
With the key in the OFF position, use a multimeter to perform the following continuity checks on the vehicle
harness (VE) side :
From
X-9001 pin A13
A. If the specified values are measured, re-connect all of the connectors and continue to Step 10.
B. If the specified values are not measured, there is a failure in the camshaft speed sensor B-9017 voltage supply
wiring. Use the appropriate service manual, if necessary, to locate and repair the failed conductor.
10. Check the ECU A-9000 for the appropriate software and re-flash, if necessary.
A. If the fault has been resolved, return the machine to service.
B. If the fault has not been resolved, escalate an ASIST concern.
11. Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,
or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent
breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.
A. If you find damage or the display indicates other than normal display readings, Then, repair the damage
discovered during the inspection or locate and repair the other than normal display condition and verify that
the error has been resolved.
B. If you do not find damage and the display indicates only normal readings, Then, erase the fault code and
continue operation.
Wiring harnesses - Electrical schematic sheet 02 – Engine Control Unit (ECU) power and after treatment
system (engine schematics) (55.100.DP-C.20.E.02)
Wiring harnesses - Electrical schematic sheet 03 – Engine sensors and fuel injection (engine schematics)
(55.100.DP-C.20.E.03)
Electrical systems - FAULT CODES
To
All pins in connector X-9001.
To
Chassis ground
To
Chassis ground
X-9008 pin 3
To
All pins in connector X-9001.
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55.12 [55.DTC] / 131
Value
There should be no continuity.
Value
There should be no voltage.
Value
There should be no continuity.
There should be no continuity.
Value
There should be no continuity.