PRE-RELEASE
"READ FUNCTIONS" commandmenu
| "READ FUNCTIONS" command menu |
Values relating to the different commands are stored in the control module's internal memory. These values are updated continuously, some of them as soon as the ignition switch is turned to the ON position although most of them require the engine to be started. When the engine is switched off the control module stores the most recent value recorded.
This value is displayed next time the ignition switich is turned to the ON position but it is not relevant for commands requiring the engine to be started. The ISAT scan tool will then display an incorrect value.
The ISAT scan tool display texts below are presented in the same order as the commands under READ FUNCTIONS in the ISAT scan tool menu structure.
|
|
|
|
MASS AIR FLOW SENSOR
X.X V X.X g/s |
Shows the MASS AIR FLOW SENSOR's
input voltage (control module, pin 7) and the associated intake air flow in grammes per
second (g/s). Conversion is carried out according to the characteristics of the mass air flow
sensor:
g/s = f (V). See "Technical data".
Operating range: 0.0 - 5.0 V. |
|
BATTERY VOLTAGE
XX.X V |
Shows the control module's power supply,
+15 circuit (control module pin 58).
Operating range: 0.0 - 17.4 V. |
|
COOLANT TEMP
X.X V XX.X°C |
Shows the input voltage (control module pin 78)
from the engine coolant temperature sensor and associated temperature in °C.
Conversion is carried out according to the coolant temperature sensor's design specs:
°C = f(ohm).
Operating range: 0.0 - 5.0 V. |
|
THROTT POS SENSOR
X.X V XX.X DEGREES |
Shows the throttle position sensor's input
voltage (control module pin 73) in volts and converted into degrees.
Operating range: 0.0 - 5.0 V and 0.0 - 90 degrees. |
|
ROUGH ROAD SENSOR
XX.X V X.X g |
Shows the rough road sensor's input voltage
(control module pin 80) in volts and the car's vertical acceleration, if any, in g.
Operating range: 0.0 - 5.0 V and 0.0 - 2.5 g. |
|
ENGINE SPEED
XXXX RPM |
Shows engine speed in rpm.
Operating range: 0 - 6550 rpm. |
|
INJECTION DURATION
XX.X ms |
Shows the injection duration for cylinder 1 in ms.
Operating range: 0.0 - 98.7 ms. |
|
IGNITION TIMING
XX.X DEGREES |
Shows the ignition timing (dwell angle) for cylinder 1
in degrees before top dead centre (BTDC).
Operating range: 78 - (-144) degrees. |
|
KNOCK CONTROL
X.X DEGREES |
Shows the ignition retard in degrees when knocking
occurs in cylinder 1.
Operating range: 0 - 128 degrees. |
|
EVAP VALVE
X.XX%% |
Shows the extent of EVAP canister purge valve
opening expressed in %%.
Operating range: 0 - 100%%. |
|
CAR SPEED
XXX km/h |
Shows the speed of the car in km/h.
Operating range: 0 - 255 km/h. |
|
|
|
|
ENGINE LOAD SIGNAL
XX.XX ms |
Shows the internal control module quantity, which is
proportional to the current engine load.
Operating range: 0 - 12.25 ms. |
|
CALC. AIR MASS
XXX.X g/s |
Shows the air flow calculated by the control module
that has to pass the IAC valve for attainment of the correct idling speed.
Operating range: 0 - 17 g/s. |
|
ACTUAL AIR MASS
XXX.X g/s |
Shows the air flow through the IAC valve (mass air
flow sensor value less adapted leakage flow across the throttle butterfly) as measured by the
control module.
Operating range: 0 - 17 g/s. |
|
Closed loop
± XX %% |
Shows the working range of closed loop control. At
limit values, the diagnostic trouble codes "Adaptation lean" and "Adaptation rich" are
generated.
Operating range: ±25 %%. |
|
ADDITIVE ADAPTION
X.XXX ms |
Shows the additive fuel injection duration correction.
Adaptation takes place at idling speed. Operating range: ± 0.512 ms.
|
|
MULTIPL. ADAPTION
± XX %% |
Shows the multiplicative fuel injection duration
correction. Adaptation takes place while the car is being driven. Operating range: ±
25%%.
|
|
OXY SENSOR FRONT
X.XX V |
Shows the input voltage (control module pin 12)
from the front heated oxygen sensor mounted before the three way catalytic converter.
Operating range: 0.00 - 1.25 V. Shows the input voltage (control module pin 39) from the rear
heated oxygen sensor mounted after the three way catalytic converter. Operating range: 0.00
- 1.25 V.
|
|
FRONT OXYGEN SENSOR
X.X V REAR OXYGEN SENSOR X.X V |
Shows the preheating current (control module pin 37) for the front
heated oxygen sensor mounted before the three way catalytic converter. The preheating
current is measured internally in the control module via a 0.1 ohm resistor and presented in
volts.
Operating range: 0.0 - 1.0 V. Shows the preheating current (control module pin 30) for the rear heated oxygen sensor mounted after the three way catalytic converter. The preheating current is measured internally in the control module via a 0.1 ohm resistor and presented in volts. Operating range: 0.0 - 1.0 V. |
|
|
|
|
MISFIRING CYLINDER 1
XXX |
Shows the number of misfires for cylinder 1.
Operating range: 0 - 100 rolling. |
|
MISFIRING CYLINDER 2
XXX |
Shows the number of misfires for cylinder 2.
Operating range: 0 - 100 rolling. |
|
MISFIRING CYLINDER 3
XXX |
Shows the number of misfires for cylinder 3.
Operating range: 0 - 100 rolling. |
|
MISFIRING CYLINDER 4
XXX |
Shows the number of misfires for cylinder 4.
Operating range: 0 - 100 rolling. |
