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Data Parameters Long Parameter Names

BAROMETRIC PRESSURE

Can be obtained from a BARO or MAP sensor directly or deducted by

the ECM from other sensor (MAF) signals. If the value at 'ignition key

on' and certain driving conditions is stored into a memory, clearing the

memory may lead to inaccurate BARO values.

CALCULATED LOAD VALUE

The ECM calculates the engine load by dividing the actual manifold

airflow volume (Otto engines) or actual fuel flow (Diesel engines) by

the maximum possible volume with a factor for pressure and

temperature compensation. Correlates with the engine vacuum. Value

is presented as a percentage and ranges from 0 to 100.

CATALYST TEMPERATURE

Bx–Sy

Shows the catalyst substrate temperature for the mentioned bank or

the temperature of the mentioned bank and oxygen sensor. Can be

obtained from a sensor directly or deducted by the ECM from other

sensor signals.

COMMANDED EGR

Shows the status of the Exhaust Gas Recirculation system between

0% (no flow) and 100% (max. flow, max. duty cycle)

COMMANDED

EQUIVALENCE RATIO

Shows the Air/Fuel ratio as commanded by the ECM. To obtain the

actual Air/Fuel ratio, multiply the stoichiometric Air/Fuel ratio by the

equivalence ratio. Conventional oxygen sensors shows the ratio when

in Open Loop only. In Closed Loop '1.0' is shown. Wide range, or

linear, oxygen sensors show the ratio in Open Loop and Closed Loop.

COMMANDED

EVAPORATIVE PURGE

Shows the status of the Evaporative Purge Control Valve between 0%

(no flow) and 100% (max. flow, max. duty cycle)

COMMANDED SEC. AIR

STATUS

Shows the position of the Secondary Air system (upstream or

downstream of the first catalytic converter) and/or its status.

COMMANDED THROTTLE

ACT.CONTROL

Shows the status of the Throttle Actuator Control between 0% (closed

throttle) and 100% (wide open throttle)

CONTROL MODULE

VOLTAGE

Shows the power input to the ECM. This is not automatically equal to

the battery voltage!

DISTANCE SINCE DTCs

CLEARED

Accumulated distance since the DTCs were cleared. The maximum

number is 65535. To set to 0, reset all DTCs

DISTANCE WHILE MIL

ACTIVE

Conditions for this counter:

1. Resets to zero when MIL state changes from 'deactivated' to

'activated' by the ECM.

2. Accumulates counts in km if MIL is activated (ON).

3. Does not change value while MIL is not activated (OFF).

4. Resets to zero if diagnostic information is cleared either by service

$04 or 40 warm-up cycles without MIL activated.

5. Does not wrap to zero if value is maximum (65535).

EGR ERROR

The Exhaust Gas Recirculation system control and feedback devices

differ, therefore no 'actual' or 'commanded' status can be shown. The

value is (actual EGR - commanded EGR), commanded EGR. E.g.

(5%-10%)/10%=-50%

ENGINE COOLANT

TEMPERATURE

Shows the temperature as measured by either the engine coolant

temperature sensor or the cylinder head temperature sensor. If neither

of these sensors are available, the engine oil temperature may be

shown instead.

Table 7-1 Long parameter names (sheet 2 of 4)

Parameter Description for long parameter

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 71 72

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Blue point Microscan III Manual do Utilizador Página 55

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