ad0752d600012a

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

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

Applies to: ENGINE 111.979 in MODEL 901, 902, 903, 904

Where it sits

Function group 1 Engine › 07 Mixture formation › 07.52 PEC-SFI fuel injection/ignition system — Series 901 · Series 902 · Series 903 · Series 904

EinPAS 15 Engine › 15.45 Engine management › 15.45.1 Basic information — Series 901 · Series 902 · Series 903 · Series 904

Also applies to engines/gearboxes: 111 979

AD07.52-D-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

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

O2 sensor(R22)

Control module

1.1

Actuation

Engine coolant temperature

> 80 °C

Engine: Idling

Actuate injection valves in groups

Cylinders 2 and 3

OFF

ON

Engine speed reduces briefly or engine stalls

Engine speed increases

1.2

Cables

1.2

Single resistance

Ignition: OFF

Coupling disconnected at

injection valve 2 or 3

Measured at injection valve

2 or 3

14 - 16 Ω

Injection valve 2 or 3