Nominal values

DME NOMINAL VALUES

Value

Unit

Deviation

Idle speed

680

rpm

+/-20

Load signal

1.3

+/-0.3

Mass air flow

kg/h

+/-2.5

Hot film mass air flow meter

1.3

+/-0.2

Voltage

13.6

+/-0.5

Engine temperature

°C

+/-5.0

Throttle plate angle

0.0

+/-0.5

Ignition timing

5.3

°crk

+/-0.7

Spec. air mass

kg/h

+/-1.0

Spec. air adaptation

3.0

kg/h

+/-1.0

Injection time

3.0

+/-0.4

Oil temperature

90.0

°C

+/-5

Oxygen sensing, cylinder 1 - 3

1.0

+/-0.05

Oxygen sensing, cylinder 4 - 6

1.0

+/-0.05

Range 2, cylinder 1 - 3 (FRA)

1.02

+/-0.04

Range 2, cylinder 4 - 6 (FRA 2)

1.03

+/-0.05

Range 1, cylinder 1 - 3 (TRA)

0.00

+/-0.1

Range 1, cylinder 4 - 6 (TRA 2)

0.00

+/-0.1

02 sensor voltage ahead of cat. conv.

0.04 "LESS THAN EQUAL TO" U_L "LESS THAN EQUAL TO" 0.79

02 sensor voltage 2 ahead of cat. conv.

0.04 "LESS THAN EQUAL TO" U_L2 "LESS THAN EQUAL TO"0.79

⁽¹⁾ 02 sensor voltage behind cat. conv.

0.04 "LESS THAN EQUAL TO" U_L "LESS THAN EQUAL TO" 0.79

⁽¹⁾ 02 sensor voltage 2 behind cat. conv.

0.04 "LESS THAN EQUAL TO" U_L2 "LESS THAN EQUAL TO" 0.79

Camshaft position 1 deviation

0.0

°crk

+/-6.0

⁽¹⁾ Camshaft position 2 deviation

0.0

°crk

+/-6.0

Rough-running threshold

9.2

1/s²

+/-1.3

Rough running

0.0

1/s²

+/-1.5

Segment (A)

1.0

Segment (B)

1.0

Learning progress, sensor wheel adaptation

0.000

Misfire detection

0.0

Engine compartment temperature

63.0

°C

+/-8.0

Oxygen sensor heat resistance ahead of cat. conv.

3.1

ohm

+/-0.4

⁽¹⁾ Oxygen sensor heat resistance behind cat. conv.

3.1

ohm

+/-0.4

⁽¹⁾	Only for OBDII vehicles

NOTE: The stated values are the result of measurements of vehicles with different mileages and in perfect condition. Different values can result from diagnosis in the workshop because of mileage and environmental influence. For DME diagnosis, it is important to look at several values simultaneously and in a collective group during trouble shooting.

Example:

An important collective group is formed by the following values VEHICLES MEASUREMENT RESULT WITH DIFFERENT MILEAGES AND PERFECT CONDITIONS table.

VEHICLES MEASUREMENT RESULT WITH DIFFERENT MILEAGES AND PERFECT CONDITIONS

Group	Values in normal state	Change caused by secondary air (oil filler cap)
Range 2 cylinder 1 - 3 (FRA)	0.96	0.96
Range 2 cylinder 4 - 6 (FRA 2)	0.96	0.96
Range 1 cylinder 1 - 3 (TRA)	0.08	0.36
Range 1 cylinder 4 - 6 (TRA 2)	0.01	0.36
Ignition timing	5.3 °crk	3.8 °crk
Mass air flow	15.5 kg/h	11.25 kg/h
Engine speed	680 rpm	720 rpm