1A-84 Engine Control System
VIM Data
Item
Tech 2 Data
Display
Units
displayed
Description
How to use parameters
1/31
System Voltage
V
This parameter refers to the
power supply voltage applied to
the VIM from the battery.
When the display substantially
deviates from the actual battery
voltage, a voltage drop may
occur due to accessories
installed to the circuit. If it
deviates from the specified level,
the circuit, connector, connector
mating, or VIM may be faulty.
2/31
Vehicle Speed
km/h
This parameter refers to the
value calculated by the VIM using
the signals from the VS sensor.
When the display differs from the
speedometer reading or is
unchanged, major cause may lie
in VS sensor, circuit, VIM, or
ECM.
3/31
Barometric
Pressure Sensor
V
This parameter refers to the
signal voltage input to the VIM
from the barometric pressure
sensor. (Higher barometric
pressure provides higher
voltage.)
The barometric pressure sensor
is a proper criterion for various
control configurations (e.g.,
startup, cold, or post-warmup
condition). This parameter may
be used as one of DTC detection
conditions.
4/31
Barometric
Pressure
kPa
This parameter refers to the
value calculated by the VIM using
the signals from the barometric
pressure sensor.
When the display deviates from
the specified level, the sensor,
circuit, or ECM may be faulty.
5/31
PTO Accelerator
Sensor
V
This parameter refers to the
voltage signal input to the VIM
from the PTO accelerator sensor.
(Larger PTO accelerator position
provides higher voltage.)
When the display deviates from
the specified level as the PTO
accelerator position is changed,
the sensor, circuit, VIM, or ECM
may be faulty.
6/31
PTO Accelerator
Opening
%
This parameter refers to the
value calculated by the VIM using
the signals from the PTO
accelerator sensor.
When the display deviates from
the specified level as the PTO
accelerator position is changed,
the sensor, circuit, VIM, or ECM
may be faulty.
7/31
Ignition Switch
ON/OFF
This parameter refers to the
status of the signals input from
the key switch to the VIM. It
appears on the display after the
key switch is moved to the
position "ON" or "ST".
When the display is fixed, the
switch, circuit, VIM,or ECM may
be faulty.
8/31
Idle Up Volume
V
This parameter refers to the
signal voltage input to the ECM
from the idle up volume. (Higher
idle speed provides higher
voltage.)
When the display is improper, the
idle up volume, circuit, VIM, or
ECM may be faulty.
