Isuzu N 2008 Series Workshop Manual page 46

ASR Commanded APP (Accelerator Pedal Position)
This parameter displays the controlled angle of the
accelerator pedal calculated by the electric hydraulic
control unit (EHCU) when anti slip regulator (ASR)
system operated. The scan tool will display 100% when
the ECM is not controlled to reduce fuel injection
quantity. The scan tool will display a lower percentage
when the ECM is controlled to reduce fuel injection
quantity to reduce drive wheels spinning.
PTO Switch
This parameter displays the state of the PTO switch to
the ECM. When the PTO switch is operated by control
lever or button, scan tool displays On.
PTO Remote Throttle
This parameter displays the angle of the PTO remote
throttle sensor as calculated by the ECM using the
signal from the PTO remote throttle sensor. The PTO
remote throttle angle is a range of values indicating a
low percentage when the throttle sensor is not operated
to a high percentage when the throttle sensor is
operated.
PTO Remote Throttle Sensor
This parameter displays the voltage signal sent to the
ECM from the PTO remote throttle sensor. PTO remote
throttle sensor is a range of values indicating a low
voltage when the throttle sensor is not operated to a
high voltage when the throttle sensor is operated.
Engine Warm Up Switch
This parameter displays the input state of the engine
warm up switch to the ECM. On indicates the engine
warm up switch is closed and allows energizing the
exhaust brake solenoid valve and intake throttle valve
depending upon engine condition.
A/C Signal
This parameter displays the state of the air conditioning
(A/C) compressor engagement. On indicates the ECM
receiving an A/C compressor On signal. Off indicates
the ECM is not receiving an A/C compressor On signal.
Refrigerator Switch
This parameter displays the state of the refrigerator
compressor engagement. On indicates the ECM
receiving a refrigerator compressor On signal. Off
indicates the ECM is not receiving a refrigerator
compressor On signal.
Oil Level
This parameter displays the input state of the engine oil
level switch to the ECM. Normal indicates the engine oil
level is not too low for safe operation of the engine. Low
indicates the engine oil level is abnormally low and has
opened the engine oil level switch.
Glow Pulg Relay Command
This parameter displays the commanded state of the
glow relay control circuit. On indicates the glow relay
control circuit is being grounded by the ECM, allowing
voltage to the glow plugs.
Engine Control System (4JJ1)
Malfunction Indicator Lamp (MIL)
This parameter displays the commanded state of the
malfunction indicator lamp (MIL) control circuit. The
MIL should be On when the scan tool indicates
command On. The MIL should be Off when the scan
tool indicates command Off.
Distance While MIL is Activated
This parameter displays the mileage since the
malfunction indicator lamp (MIL) is turned ON.
Engine Runtime With MIL Active
This parameter displays the accumulated ignition
switch ON time elapsed since the malfunction indicator
lamp (MIL) is turned ON. The scan tool will display the
time in minutes.
Total Engine Overspeed Event
This parameter indicates counter of engine overspeed
event. Counter will be zero if any DTC is cleared.
Total Engine Coolant Overtemperature Event
This parameter indicates counter of engine overheat
event. The counter is active if engine coolant is over
110°C (230°F). Counter will be zero if any DTC is
cleared.
Total Fuel Temperature Overtemperature Event
This parameter indicates counter of fuel temperature
excessively high condition. The counter is active if fuel
temperature is over 90°C (194°F). Counter will be zero
if any DTC is cleared.
Total Intake Air Temperature Overtemperature
Event
This parameter indicates counter of intake air
temperature excessively high condition. The counter is
active if intake air temperature is over 60°C (140°F).
Counter will be zero if any DTC is cleared.
DPD Regeneration Switch
This parameter displays the input state of the DPD
regeneration switch to the ECM. On indicates the DPD
regeneration switch is closed and allows entering the
regeneration process
accumulation condition.
DPD Mode
This parameter displays the state of the DPD. It mainly
indicates an action request or status to the user during
regeneration event. 1 or 50 indicates DTC is set, which
is not allowing the DPD regeneration. 30 indicates
under normal engine operation.
DPD Accumulation Status
This parameter displays the state of PM accumulations.
It indicates that the PM accumulative amount to the
filter increases while parameter is increasing from 0 to
5. This parameter uses together with DPD Distance
Status parameter to determine regeneration type
manually.
1A-43
depending upon PM