Isuzu 2008MY N Series, Руководство по ремонту

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Engine Control System (4HK1) 1A-39
Scan Tool Data List
The Engine Scan Tool Data List contains all engine
related parameters that are available on the scan tool.
A given parameter may appear in any one of the data
lists, and in some cases may appear more than once,
or in more than one data list in order to group certain
related parameters together. Use the Engine Scan Tool
Data List only after the following is determined:
• The Engine Controls - Diagnostic System Check is
completed.
• On-board diagnostics are functioning properly.
Scan tool values from a properly running engine may
be used for comparison with the engine you are
diagnosing. The Engine Scan Tool Data List represents
values that would be seen on a normal running engine.
Only the parameters listed below are referenced in this
service manual for use in diagnosis.
Scan Tool Parameter Units Displayed Typical Data Value at Engine
Idle
Typical Data Value at 1700
RPM
Operating Conditions: Engine idling or 1700RPM/ Engine coolant temperature is between 75 to 85
°
C (167 to
185
°
F)/ Accelerator pedal is constant/ Neutral or Park/ Accessories OFF/ Vehicle located at sea level/ DPD is not
under regeneration
Engine Speed RPM Nearly 575 RPM Nearly 1700 RPM
Desired Idle Speed RPM 575 RPM 575 RPM
Calculated Engine Load % Less than 25% Less than 20%
Coolant Temperature
°
C/
°
F 75 to 85
°
C/ 167 to 185
°
F 75 to 85
°
C/ 167 to 185
°
F
Engine Coolant Temperature
Sensor
Volts 0.4 to 0.6 volts 0.4 to 0.6 volts
Intake Air Temperature
°
C/
°
F 20 to 40
°
C/ 68 to 104
°
F 20 to 40
°
C/ 68 to 104
°
F
Intake Air Temperature
Sensor
Volts 1.4 to 2.3 volts 1.4 to 2.3 volts
Fuel Temperature
°
C/
°
F 20 to 60
°
C / 50 to 140
°
F 20 to 60
°
C / 50 to 140
°
F
Fuel Temperature Sensor Volts 0.8 to 2.3 volts 0.8 to 2.3 volts
MAF (Mass Air Flow) g/cyl More than 0.8 g/cyl at sea
level
More than 0.8 g/cyl at sea
level
Averaged MAF (Mass Air
Flow)
g/s — —
MAF Sensor (Mass Air Flow) Volts More than 1.5 volts at sea
level
More than 2.5 volts at sea
level
Barometric Pressure kPa/ psi Nearly 100 kPa/ 14.5 psi at
sea level
Nearly 100 kPa/ 14.5 psi at
sea level
Barometric Pressure Sensor Volts Nearly 2.3 volts at sea level Nearly 2.3 volts at sea level
Desired Turbocharger
Position
% 10 to 20% 25 to 35%
Desired Boost Pressure kPa/ psi Nearly 100 kPa/ 14.5 psi at
sea level
Less than 115 kPa/ 16.7 psi at
sea level
Boost Pressure kPa/ psi Nearly 100 kPa/ 14.5 psi at
sea level
Less than 115 kPa/ 16.7 psi at
sea level
Boost Pressure Sensor Volts Nearly 1.0 volt at sea level Less than 1.3 volts at sea
level
Desired Fuel Rail Pressure MPa/ psi Nearly 32 MPa/ 4,600 psi More than 90 MPa/ 13,000 psi
Fuel Rail Pressure MPa/ psi 28 to 35 MPa/ 4,000 to 5,000
psi
More than 90 MPa/ 13,000 psi
Fuel Rail Pressure Sensor Volts 1.4 to 1.6 volts More than 2.4 volts
LG4HKED-WE-0871.book 39 ページ ２００７年１１月２９日 木曜日 午後６時２９分