DIESEL CONTROL SYSTEM
Monitor "FUEL PRESSURE MEASURED", "RAIL PRESS. REGULATOR1", "INJ. PUMP REGULATOR" parameter
INJ. PUMP REGULATOR
38 ± 5%
32 ± 5%
28.5 ± 5 Mpa
145 ± 10 Mpa
19 ± 5%
48 ± 5%
Fig.1) The position of curser on the graph represents idle data.
The waveform of fuel pressure regulator valve installed at high pressure pump(fuel detecting MPROP) shows 38%
The waveform of rail pressure regulator valve installed at common rail shows 19% duty at idle, duty rises to approx.
TERMINAL AND CONNECTOR INSPECTION
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking