[8] Check component B5/1 (Charge pressure sensor).: The atmospheric pressure between component B5/1 (Charge pressure sensor) an

[8] Check component B5/1 (Charge pressure sensor).: The atmospheric pressure between component B5/1 (Charge pressure sensor) and component N3/9 (CDI control unit) is implausible.

Test 1: Possible cause and remedy

1. Possible cause and remedy
Check actual value B5/1 (Charge pressure sensor).
Figure legend

- B5/1 (Charge pressure sensor)
- M16/6 (Throttle valve actuator)
- The muffler was removed from the picture to improve the view.
Test prerequisite

- Operate engine at idling speed.
Status of the relevant actual values:
- Boost pressure:Warning! Communication with ECU required.

- Atmospheric pressure:Warning! Communication with ECU required.

- Boost air temperature:Warning! Communication with ECU required.
Specified value(Engine at idle)

- The actual values must not vary by more than 60 hPa.
NOTE

- When the coupling on component B5/1 (Charge pressure sensor) is unplugged, a substitute value of approx. 800 hPa is displayed.
Question

- Are the actual values o.k.?







YES
The actual values are okay.Further procedure

- Inspect air cleaner for soiling/ replace.
- Check component B5/1 (Charge pressure sensor) for dirt.
End of test

NO
The actual values are not okay.Possible cause and remedy

- Inspect air cleaner for soiling/ replace.
- Check component B5/1 (Charge pressure sensor) for dirt.
- Component B5/1 (Charge pressure sensor) is defective.
- Control unit N3/9 (CDI control unit) is defective.
End of test