New Holland WorkMaster 50 Service Manual page 750

4. Check the fuel temperature sensor B-9002 engine harness (EN) wiring for a short to ground condition.
Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.
With the key in the OFF position use the a multimeter to perform the following continuity checks for a short to
ground condition on the engine harness (EN) side :
From
X-9005 pin 1
A. If the specified values are not measured, there is a fault in the fuel temperature sensor B-9002 engine harness
(EN) wiring. Locate and repair the failed conductor.
B. If there is no continuity, check the ECU A-9000 for the appropriate software and re-flash, if necessary.
5. 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 discov-
ered 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 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.
47866583_ 02/12/2015
55.12 [55.DTC] / 29
Value
There should be no continuity.