New Holland WorkMaster 50 Service Manual page 744

From
X-9003 pin 4
X-9003 pin 3
NOTE: Wiggle the harness during the check to promote an intermittent electrical connection.
A. If there is no continuity, there is an open circuit in the intake manifold pressure sensor B-9001 wiring in the
engine harness (EN). Locate and repair the broken conductor.
B. If there is continuity, leave connectors X-9003 and X-9001 disconnected and continue to Step 4.
4. Check the intake manifold pressure sensor B-9001 wiring in the engine harness (EN) for a short to a voltage
source.
With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness
(EN) side :
From
X-9003 pin 4
X-9001 pin A40
X-9001 pin A10
A. If there is continuity, there is a short circuit in the intake manifold pressure sensor B-9001 wiring in the engine
harness (EN). Locate and repair the shorted conductor.
B. If there is no continuity, leave connector X-9003 disconnected and continue to Step 5.
5. Replace the intake manifold pressure sensor B-9001.
Use the Electronic Service Tool (EST) to check the status of this fault.
A. If the fault is no longer active, return the machine to service.
B. If the fault is still active, 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 03 – Engine sensors and fuel injection (engine schematics)
(55.100.DP-C.20.E.03)
Electrical systems - FAULT CODES
To
X-9001 pin A40
X-9001 pin A10
To
X-9003 pin 3
All pins in connector X-9001
All pins in connector X-9001
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Value
There should be continuity.
There should be continuity.
Value
There should be no continuity.
There should be no continuity.
There should be no continuity.