Permanent Fault

Permanent fault

Checking for air leakage in the intake system
Check for air leakage. See Check for air leaks in the intake system Air Leaks in the Intake System, Checking.
Remedy as necessary.





Was there any air leakage?

Yes - Verification

No - Checking for air leakage in the exhaust system

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Checking for air leakage in the exhaust system
Check for air leakage. See Checking for air leakage in the exhaust system Air Leakage Exhaust System, Check.
Remedy as necessary.





Was there any air leakage?

Yes - Verification

No - Checking fuel and residual pressures

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Checking fuel and residual pressures
Check the fuel pressure and residual pressure.
Remedy as necessary.





Was the pressure OK?

Yes - Checking the compression

No - Verification

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Checking the compression
Test the compression.
Remedy as necessary.





Is the compression OK?

Yes - Replacing the component

No - Verification

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Replacing the component
- Try a new three-way catalytic converter (TWC). Replace according to Three-way catalytic converter (TWC), replacing Service and Repair.



Continue - Verification

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Verification




Verification

Verification

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








- Ignition off.
- Replace connector, components etc.
- Test drive car according to Verifying repairs Verifying Repairs.

Note! After test driving the engine should not be turned off. Information in the control module is erased.




- Connect VCT 2000 to the data link connector (DLC).
- Read off the status of the diagnostic trouble code (DTC). The text NOT READY is displayed if the diagnosis is still on-going. This indicates that the test drive was too short.





Is FAULT NOT REGISTERED displayed?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking for air leakage in the intake system

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