Evaluating Measured Value Blocks At Full Load (Engine Code Cpyb); Conditions For Measurements At Full Load - Volkswagen CJDA Workshop Manual

Display Operating mode or component
zone
3 Charge pressure (actual)
4 Duty cycle of charge pressure control sol-
enoid valve
Evaluation: display group 11, display zone 3 - charge pres-
sure (actual)
Display shows Possible cause of fault
Below specification
◆ Leaks between turbocharger and en-
◆ Charge pressure control defective
Above specification
◆ Charge pressure control defective
◆ Turbocharger defective
◆ Defective charge pressure sender
6.5 Evaluating measured value blocks at
full load (engine code CPYB)
Note conditions for measurements at full load
Display group:
◆ 1 - Injected quantity
◆ 3 - Exhaust gas recirculation
◆ 8 - Torque limit 1 ⇒ P age
◆ 11 - Charge pressure control

6.5.1 Conditions for measurements at full load

Always follow safety precautions
Read measured value block
Note
Due to the various use cases of industrial engines, check
whether the engine attains full load under the respective operat-
ing conditions before performing measurements at full load.
– At full load, increase engine speed from 1500 rpm to full
throttle (accelerator pedal position sender at end stop).
– Have a second person read the measured values at approx.
2300 rpm.
– Exit diagnosis function.
– Switch off ignition.
6 Measured value blocks, engine codes CPYA, CPYB, CPYC, CPYD, CPYE, CPYF, CPYG
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
gine (charge air system)
-G31-
⇒ P age
⇒ P age
130,
⇒ P age
130,
131,
⇒ P age
132,
⇒ P age
110.
⇒ P age
110.
Industriemotoren - Industrial Engines 2009 ▶
Specification
1600...1900 mbar
35...70 %
Fault remedy
– Checking charge air system for leaks
⇒ P age 331
– Checking charge pressure control
⇒ P age
333.
– Checking charge pressure control
⇒ P age
333.
– -G31- Check.
129.
3
Evaluation
⇒ P age 129
---
⇒ P age 343
129