Faulty Signal

Faulty signal

Checking the connector








- Ignition off
- Check the boost pressure sensor connector. Check for contact resistance and oxidation
- Reinstall the components, reconnect the connectors etc.
- Ignition on.
Read off the boost pressure and the atmospheric pressure.
The difference in pressure must not be greater than 140 hPa.
If the difference is less than 140 hPa, the cause of the fault was loose connections in the connector.

Other information:
- To access or replace the boost pressure sensor. See Temperature and pressure sensor, replacing Service and Repair.









Is the difference between the pressures less than 140hPa?

Yes - Fault Found

No - Replacing the component

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Replacing the component
If the difference between the pressures is greater than 140 hPa, try replacing the boost pressure sensor.

Hint: Normal atmospheric pressure is 1013 hPa. Check which of the sensors appears to display the incorrect reading.

If the fault is not in the boost pressure sensor, replace the engine control module (ECM).

Note! The atmospheric pressure sensor is built into the engine control module (ECM) and therefore cannot be replaced as a separate item.

Caution! New engine control module (ECM)s (ECM) are supplied without software. The engine control module (ECM) must be programmed before it will function after replacement.

Remedy as necessary.

Other information:
- Normal atmospheric pressure is 1013 hPa
- To access or replace the boost pressure sensor, see Temperature and pressure sensor, replacing Service and Repair
- To access or replace the engine control module (ECM), see Engine control module (ECM), replacing Service and Repair
- For information about signals on 5 cylinder engines, see Signal specification Signal Description / Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Description / Specification.














Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on
- Read off the boost pressure sensor pressure and atmospheric pressure sensor pressure
- The difference between the pressure sensors should not be greater than 140 hPa.





Is the difference between the pressure sensors less than 140hPa?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the connector

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