New Holland WorkMaster 50 Service Manual page 760

From
X-9039 pin 2
X-9039 pin 1
A. If there is between 2.4 - 2.6 V, leave connector X-9039 disconnected and continue to Step 6.
B. If there is not between 2.4 - 2.6 V, continue to Step 5.
5. Check the crankshaft position sensor B-9007 engine harness (EN) wiring for an open circuit.
Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.
With the key in the OFF position, use a multimeter to perform the following continuity checks for an open circuit
on the engine harness (EN) side :
From
X-9039 pin 2
X-9039 pin 1
A. If there is continuity, leave connectors X-9039 and X-9001 disconnected and continue to Step 5.
B. If there is no continuity, there is an open circuit in the crankshaft position sensor B-9007 circuit wiring in the
engine harness (EN). Locate and repair the broken conductor.
6. Replace the crankshaft position sensor B-9007.
Use the Electronic Service Tool (EST) to verify the status of this fault.
A. If the fault has been resolved, return the machine to service.
B. If the fault has not been resolved, check the ECU A-9000 for the appropriate software and re-flash, if necessary.
7. 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
Chassis ground
Chassis ground
To
X-9001 pin A44
X-9001 pin A59
47866583_ 02/12/2015
55.12 [55.DTC] / 39
Value
There should be between 2.4 - 2.6 V.
There should be between 2.4 - 2.6 V.
Value
There should be continuity.
There should be continuity.