WP13 Diesel Engine Series Operating Manual
24
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Check whether the rail pressure sensor has its initial voltage of about 500mV, or check whether
the set rail pressure is 30-50 MPa. It can be measured as follows:
Enter the operation interface of the fault diagnosis instrument, select the “real values” and click
“Next”.
Select required function
Press >> to continue
Identification
Fault memory
Delete the faults in the fault memory
Implementation element
Function test
Real values
At this time, all “real values” will appear. Select “Voltage of accumulator tube pressure sensor” and
“rated fuel rail pressure”.
Engine speed
Rated fuel rail pressure
Actual fuel rail pressure
Voltage of accumulator tube pressure sensor
If not normal, first check whether the connectors are fastened reliably, and if there is no problem,
the rail pressure sensor may be damaged.
If no inspection equipment is available, unplug the rail pressure sensor connector and try restarting
it (after started, let it enter the “limp home mode”).
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Check whether the flow measurement unit is intact, unplug the flow measurement unit
connectors and try starting it again.
①
Firstly, observe whether there is any hardware damage and whether the connectors are firmly
connected.
②
Connect the fault diagnosis instrument to complete the Meter-unit test.
Enter the operation interface of the fault diagnosis instrument, select the “function test” and click
“Next”.
