Isuzu 2008MY N Series, Workshop Manual

Page: 36 / 404

Engine Control System (4HK1) 1A-33
Diagnostic Information and Procedures
Engine Control System Check Sheet
LNW81AXF000101
ENGINE CONTROL SYSTEM CHECK SHEET
Inspectors Name
Customer’s Name Model & Model Year
Driver’s Name Chassis No.
Date Vehicle Brought In Engine No.
License No. Odometer Reading km/miles
g/s
kPa
Engine Does
Not Run
Engine does not crank No initial combustion No complete combustion
Hard Start Engine cranks slowly Other ( )
Abnormal idling speed High idling speed ( RPM) Low idling speed ( RPM)
Rough idling Incorrect Idle
Other ( )
Hesitation, sag, stumble Surge Cut out
Lack of power, sluggishness, sponginess
Poor
Driveability
Other ( )
Soon after starting After accelerator pedal depressed
Engine Stall During A/C operation After accelerator pedal released Shifting from N to D
Other ( )
Black smoke White smoke Poor fuel economy
Abnormal combustion noise
P
roblem
Sy
mptoms
Others
Other ( )
Dates problem occurred
Constant Intermittently ( times per day/month) Once only
Problem frequency
Other ( )
Fine Cloudy Rainy Snow
Weather
Various/Other ( )
Hot (approx. ) Warm Cool Cold (approx. )
Outside
Temperature
Any temperature
Highway
Suburbs City area Uphill
Place
Downhill Rough road Other ( )
Over (approx. tons) No load
Load Condition
Other (approx. tons)
Cold Warming up After warming up Any temperature
Engine
Temperature
Other ( )
Starting Just after starting ( Min.) Idling
Racing Driving Constant speed Acceleration
Deceleration A/C switch On/Off
Engine Operation
Other ( )
C
ondi
tion
When
Pr
oblem
Oc
cu
rs
P
DPD accumulation status
DPD distance status
DPD incomplete regeneration status
DPD insufficient regeneration status
Exhaust differential pressure at instructed conditions
Averaged MAF when exhaust differential pressure is measured
resent Code Nothing
P or U Code
No. (
)
Diagnostic Trouble
Code (DTC) or Flash
Code
History Code Nothing
P or U Code
No. (
)
DPD System
1
1 2
2 3
3
0
0 1
1 2
2
4
4 5
DPD manual regeneration frequently
DPD regeneration long time
Fuel Amount Full Above 1/2 Below 1/2 Near empty
Fuel Bland
Condition of MIL or SVS lamp Remains On Intermittently turns On Does not turn On
DPD lamp or MID indicator
Blinked Did not blink
DPD switch
Pushed Did not push
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