PEC fuel injection and ignition system test of electrical system injector cylinders 1 and 4

AD07.52-D-6000-11A

PEC fuel injection and ignition system test of electrical system injector cylinders 1 and 4





Scope of test

Measuring instrument/Test connection

Operation/

Requirement

Specified value

 Possible cause/

Remedy

1.0





Injection valve

Cylinders 1 and 4

Injection time



Engine coolant temperature

> 80 °C

Engine: Idling

Actual value 

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 1 and 4

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 1 or 4

Measured at injection valve

1 or 4

14 - 16 Ω

 Injection valve 1 or 4