ad0752s600012a

PEC fuel injection and ignition system test of electrical system injector cylinders 2 and 3

Type ad · emne 07.52 · version 0100 · 2003-06-06

Gælder for: ENGINE 111.948 /978 in MODEL 638

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 07 Blandingstilberedning › 07.52 Benzinindsprøjtnings- og tændingssystem PMS — Serie 638

EinPAS 15 Motor › 15.45 Motorstyring › 15.45.1 Grundinformation — Serie 638

Gælder også for motorer/gearkasser: 111 948, 111 978

AD07.52-S-6000-12A

PEC fuel injection and ignition system test of electrical system injector cylinders 2 and 3

Scope of test

Measuring instrument/
Test connection

Operation/Requirement

Specified value

Possible cause/Remedy

1.0

Injection valve, cylinders 2 and 3

+, thermal shutoff

–//–, –

Injection time

Engine coolant temperature > 80°C

Engine: Idling

Actual value 03

Injection time:

approx. 2.1 - 2.6 ms

1.1

NTC temperature sensor

NTC intake air sensor

Oxygen sensor

Control module

1.1

Actuation

Engine coolant temperature > 80°C

Engine: Idling

Actuation of injection valve group cylinders 2 and 3

Actuate injection valves in groups

OFF

ON

Engine speed reduces briefly.

Engine speed increases.

1.2

Engine stalls, valve group not actuated:

Cables

1.2

Single resistance

Injection valve

2 or 3

Ignition: OFF

Coupling disconnected at injection valve 2 or 3

14-16 Ω

Injection valve 1 or 4