Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking connectors and components

Hint: If there is a diagnostic trouble code (DTC) for the boost pressure sensor, fault tracing the diagnostic trouble code (DTC) for the boost pressure sensor should be handled first.








- Ignition off
Check the connector of the mass air flow sensor, boost pressure sensor, system relay and engine control module (ECM) for contact resistance and oxidation.
Check the induction system for air leaks.

Hint: The diagnostic trouble code (DTC) can be caused by a damaged boost pressure sensor 2 (MAP) or mass air flow sensor.

Remedy as necessary.

Other information
- Engine control module (ECM), replacing Service and Repair.
- Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000.
- Signal specification Signal Specification.
- Boost pressure sensor 1, replacing Boost Pressure Sensor 1, Replacing.
- Replacing the mass air flow (MAF) sensor Service and Repair.
- Checking wiring and terminals Checking Wiring And Terminals









Continue - Verification

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Verification




Verification

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




- Reinstall the components, reconnect the connectors etc.
- Start the engine
- Rev the engine above 4000 rpm twice.




- Check whether the diagnostic trouble code (DTC) status changes to intermittent. If the fault has been remedied, the diagnostic trouble code (DTC) status should have changed to intermittent

Is the status of the diagnostic trouble code (DTC) intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking connectors and components

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