Actron KAL9615 - Manual (Page 34)

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MAP (“HG) (Manifold Absolute Pressure - PCM input)
MAP (KPA)
Display: numeric inches of Mercury (“HG) or kiloPascals (KPA)
The Manifold Absolute Pressure sensor converts intake manifold vacuum or
pressure to an electric signal and sends it to the PCM. The PCM converts this signal
into a numerical pressure value expressed in kiloPascals (kPa) or inches of Mercury
(“Hg). The MAP reading will vary with engine speed and load. Vehicles should show a
MAP Sensor reading even if the engine is not running (indicating atmospheric
pressure in the manifold).
MIL STATUS (Malfunction Indicator Lamp Status - PCM output)
Display: ON or OFF
This PID shows the state that the PCM is commanding of Malfunction Indicator
Lamp. ON indicates that the PCM is requesting that the MIL to be ON (illuminated). If
the MIL Status is ON and the Malfunction Indicator Lamp is not on there is a problem
in MIL circuit. A MIL status of OFF show the request for the MIL to be off.
The PCM commands the MIL on when it wants to show the operator there is a problem.
OBD2 STATUS (OBD II Status - PCM value)
Display: CAL, FED, CA/FED, or OBD 1
This data parameter shows you the OBD requirement to which the vehicle was
designed.
CAL - Indicates that the test vehicle meets California OBD II requirements
FED - Informs you the test vehicle meets Federal OBD II requirements
CA/FED - California and Federal OBD II requirements are meet when this status is
displayed.
OBD 1 - A display of OBD 1 informs you that the test vehicle does not meet OBD II
requirements
O2 BNK1 #1 (V) (Oxygen Sensor Bank 1 Sensor 1 - PCM input)
O2 BNK1 #1 (%)
Display: 0.00 - 1.00 volts or -100 - +100 %
The Oxygen Sensor sends a signal to the PCM indicating whether the engine is
running rich or lean. The Oxygen Sensor generates a voltage signal ranging from 0 to
approximately 1000 mV (1 volt). A lean signal is .450V or less. A rich signal is .450V
or higher.
In normal operation, the Oxygen Sensor signal should be constantly switching
between rich and lean values. NOTE: The Oxygen Sensor must be above 500° and
the PCM must be in closed loop mode before the PCM will respond to the sensor
signals. Because of this most oxygen sensors are now heated to speed closed loop
operation and improve cold-start emissions and efficiency
The Bank (BNK) in the PID name refers to the exhaust manifold bank if more than
one is used on a vehicle. The Number (#) indicates the oxygen sensor location in the
exhaust system, 1 usually meaning before the catalytic convert and 2 after. Refer to
the vehicle’s service manual for correct identification.
PTO STATUS (Power Take-Off - PCM input)
Display: Active - InAct
This input allows the PCM keep track of the Power Take-Off status. Either the PTO
is engaged/active or disengaged/ inactive.