New Holland WorkMaster 50 Service Manual page 856

4. Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.
Check the following pins listed below on the ECU A-9000 and in connectors X-9001 and X-9102.
X-9102 pin K17
X-9102 pin K18
X-9001 pin A29
A. If a pin or connector shows signs of corrosion or damage, repair as necessary.
B. If a pin or connector shows no signs of corrosion or damage, continue to Step 5.
5. 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.
6. 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 dis-
covered 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
Pin
47866583_ 02/12/2015
55.12 [55.DTC] / 135
Physical condition
The pin and connector should be free of corrosion or
damage.
The pin and connector should be free of corrosion or
damage.
The pin and connector should be free of corrosion or
damage.