Volkswagen CJDA, Workshop Manual

Page: 416 / 553

– Then, read event memory of engine control unit, and clear
event memory if necessary
⇒
Page 26 , read event memory.
If specification is attained:
Checking wiring
– Check wiring of injector to be tested as follows:
– Using adapter cable -V.A.G 1598/39-1-, connect test box
-V.A.G 1598/42- to wiring harness of control unit
⇒
Page 24 .
The engine control unit is not connected by this action.
– Check wiring between test box and connector for open cir-
cuit referring to current flow diagram.
◆
Injector 1 -N30-: contact 1 + socket 2
◆
Injector 1 -N30-: contact 2 + socket 17
◆
Injector 2 -N31-: contact 1 + socket 47
◆
Injector 2 -N31-: contact 2 + socket 32
◆
Injector 3 -N32-: contact 1 + socket 46
◆
Injector 3 -N32-: contact 2 + socket 31
◆
Injector 4 -N33-: contact 1 + socket 1
◆
Injector 4 -N33-: contact 2 + socket 16
● Cable resistance: max. 2.0 Ω.
– Additionally, check wiring for the following:
◆
Short to positive. Specification: ∞ Ω.
◆
Short to earth. Specification: ∞ Ω.
◆
Short to one another. Specification: ∞ Ω
If no fault in lines is detected:
– Renew the defective injector
⇒
Page 418 .
– Store “injector delivery calibration values/injector voltage cal-
ibration values” and new injector in engine control unit
⇒
Page 421 .
– Then, read event memory of engine control unit, and clear
event memory if necessary
⇒
Page 26 , read event memory.
2.5 Checking engine speed sender -G28-
Function
Engine speed sender -G28- is speed and reference mark send-
er. The engine will not start if there is no speed signal. If the
speed signal fails when the engine is running, it will cause the
engine to stall immediately.
3
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
400 Repair Group 23 - Mixture preparation - injection