Upper Limit

Upper limit

Checking fuel injection system
Check intake system for air leakage according to Check for air leaks in the intake system Air Leaks in the Intake System, Checking.

Hint: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check fuel pressure.
Test drive the car for approximately 10 minutes
Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note! There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information
- To replace mass air flow (MAF) sensor, Service and Repair.





Continue - Verification

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Verification




Verification
Test drive the car according to the TRIP schedule, see Verifying repairs Verifying Repairs.
Do not turn off engine after test drive.
Connect the car to VIDA again.
Read off fuel trim status.
There should not be any faults when fuel trim is finished.





Was a fault detected?

Yes - Fault-tracing information

No - Verification complete

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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 fuel injection system

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