New Holland WorkMaster 50 Service Manual page 872

A. If there is less than approximately 12 V, continue to Step 5.
B. If there is approximately 12 V, check the ECU A-9000 for the appropriate software and re-flash, if necessary.
5. Check the ECU A-9000 voltage supply wiring for a short circuit to ground.
With the key in the ON position, use a multimeter to perform the following voltage check on the vehicle harness
(VE) side :
From
X-9102 pin K01
X-9102 pin K03
X-9102 pin K05
A. If there is continuity, there is a short circuit to ground condition in the ECU A-9000 voltage supply wiring. Use
the appropriate service manual to locate and repair the shorted conductor.
B. If there is no continuity, check the ECU A-9000 for the appropriate software and re-flash, if necessary.
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 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 02 – Engine Control Unit (ECU) power and after treatment
system (engine schematics) (55.100.DP-C.20.E.02)
Electrical systems - FAULT CODES
To
Chassis ground
Chassis ground
Chassis ground
47866583_ 02/12/2015
55.12 [55.DTC] / 151
Value
There should be no continuity.
There should be no continuity.
There should be no continuity.