New Holland WorkMaster 50 Service Manual page 850

X-9001 pin A09
X-9001 pin A10
X-9001 pin A11
X-9001 pin A12
X-9001 pin A13
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, re-connect the ECU A-9000 at connector X-9001
and continue to Step 4.
4. Check the ECU A-9000 supply voltage.
Disconnect the ECU A-9000 connector X-9102.
Place a jumper wire between X-9102 pin K28 and chassis ground. This will energize the main relay K-9102.
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 K03
X-9102 pin K05
X-9102 pin K01
A. If there is approximately 12 V, remove the jumper wire and re-connect the ECU A-9000 at connector X-9102,
then continue to Step 5.
B. If there is not approximately 12 V, there is a failure in the ECU A-9000 supply wiring. Use the appropriate
service manual, if necessary, to locate and repair the failed conductor.
5. Disconnect each of the following connectors one at a time. Monitor the status of this fault, DTC 1E6-NPL - ECU
internal failure - Sensor 5 volt supply 1 during the check.
The TVA Z-9001 connector X-9011 .
The intake manifold pressure and temperature sensor B-9001 connector X-9003.
The rail pressure sensor B-9004 connector X-9026.
The camshaft speed sensor B-9017 connector X-9008.
A. If the fault is no longer active after a component disconnection, the relevant component has failed. Replace
the component.
B. If the fault is still active after the component disconnections, leave all of the connectors disconnected and
continue to Step 6.
6. Check the TVA Z-9001 voltage supply wiring.
Disconnect the vehicle harness (VE) from the ECU A-9000 at connectors X-9102 and X-9001.
With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness
(EN) side :
From
X-9011 pin 1
Electrical systems - FAULT CODES
Pin
X-9102 pin K02
X-9102 pin K04
X-9102 pin K06
Chassis ground
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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.
The pin and connector should be free of corrosion or
damage.
The pin and connector should be free of corrosion or
damage.
To
There should be approximately 12 V.
There should be approximately 12 V.
There should be approximately 12 V.
To
There should be no voltage.
Value
Value