Isuzu 2008MY N Series Workshop Manual page 50

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 Accumulate Status
This parameter displays the state of the 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.
DPD Distance Status
This parameter displays the state of the distance since
last regeneration. It indicates that the accumulative
distance without regeneration event increases while
parameter is increasing from 0 to 4. This parameter
uses together with
parameter to determine regeneration type manually.
DPD Incomplete Regeneration Status
This parameter indicates an error status of the DPD
regeneration. 1 or 2 indicates the frequency of the
regeneration event that did not finish within a
predetermined time.
DPD Insufficient Regeneration Status
This parameter indicates an error status of the DPD
regeneration. 1 or 2 indicates the frequency of
incomplete filter purification after the regeneration
event.
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.
Exhaust Differential Pressure
This parameter displays the exhaust differential
pressure as calculated by the ECM using the signal
from the exhaust differential pressure sensor. The scan
tool will display a low exhaust differential pressure at
small PM accumulation, and a high exhaust differential
pressure at large PM accumulation.
Exhaust Differential Pressure Sensor
This parameter displays the voltage signal set to the
ECM from the exhaust differential pressure sensor.
Exhaust differential pressure sensor is a range of value
indicating a low voltage at a low differential pressure,
such as small PM accumulation, and a high voltage at a
high differential pressure,
accumulation.
DPD Accumulation
depending upon
such as large
Engine Control System (4HK1)
Exhaust Temperature 1
This parameter displays the temperature of the exhaust
gas in front of filter as calculated by the ECM using the
signal from the exhaust gas temperature sensor 1. The
scan tool will display a low temperature when the
exhaust gas temperature sensor 1 signal voltage is
high, and a high temperature when the exhaust gas
temperature sensor 1 signal voltage is low.
Exhaust Temperature Sensor 1
This parameter displays the voltage signal sent to the
ECM from the exhaust gas temperature sensor 1.
Exhaust gas temperature sensor 1 is a range of value
indicating a low voltage when the temperature is high,
and a high voltage when the temperature is low.
Exhaust Temperature 2
This parameter displays the temperature of the exhaust
gas in front of oxygen catalyst as calculated by the
ECM using the signal from the exhaust gas
Status temperature sensor 2. The scan tool will display a low
temperature when the exhaust gas temperature sensor
2 signal voltage is high, and a high temperature when
the exhaust gas temperature sensor 2 signal voltage is
low.
Exhaust Temperature Sensor 2
This parameter displays the voltage signal sent to the
ECM from the exhaust gas temperature sensor 2.
Exhaust gas temperature sensor 2 is a range of value
indicating a low voltage when the temperature is high,
and a high voltage when the temperature is low.
Exhaust Throttle Status
This parameter displays the commanded state of the
exhaust throttle solenoid valve control circuit. On
indicates the exhaust throttle solenoid valve is being
grounded by the ECM, allowing vacuum pressure to
the exhaust throttle valve.
PM
Immobilizer Function Programmed
This parameter displays the state of the immobilizer
function programming in the ECM. The scan too; will
display Yes or No. Yes indicates the immobilizer
security information is correctly programmed in the
ECM. No indicates the ECM is not programmed or
ECM is reset.
Wrong Immobilizer Signal
This parameter displays the input state of the received
response signal to the ECM. When the ECM received
wrong responce signal from the immobilizer control unit
(ICU), the scan tool displays Yes.
Immobilizer Signal
This parameter displays the input state of the response
PM signal to the ECM. When the ECM received any
response signal from the immobilizer control unit (ICU),
the scan tool displays Yes.
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