Manufacturer Code Charts: 118800

The signal from component Atmospheric pressure sensor is implausible.


Possible cause:

- N3/9 (CDI control unit)
Affected functions:

- Power generation

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Test 1: Check component B28/8 (Pressure differential sensor (DPF)).

1. Check component B28/8 (Pressure differential sensor (DPF)).
Check actual value Atmospheric pressure.
Test prerequisite

- Ignition ON
Status of the relevant actual values:
- Boost pressure:Warning! Communication with ECU required.

- Atmospheric pressure:Warning! Communication with ECU required.

- Intake air pressure:Warning! Communication with ECU required.
Specified value

- With the ignition on, the values for boost pressure, atmospheric pressure and intake air pressure must not deviate from one another by more than 30 hPa.
Question

- Are all the relevant actual values OK?


YES
The actual values are okay.Other possible cause of fault

- In the event of stored faults with high fault frequency counter:Component N3/9 (CDI control unit) is defective.
End of test

NO
At least one further actual value is not OK. Possible cause and remedy

- Test wiring N3/9 (CDI control unit) - B28/5 (Pressure sensor downstream of air cleaner) and N3/9 (CDI control unit) - B5/1 (Charge pressure sensor) for Open circuit, repair or replace if necessary.
- Component N3/9 (CDI control unit) is defective.
End of test