Lower Limit

Lower limit

Checking fuel injection system
Check intake system for air leakage.

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 the exhaust system for leakage according to Checking for air leakage in the exhaust system Checking For Air Leakage In the Exhaust System
Check fuel and residual pressure according to
Check that the oil level is between the minimum and maximum markings
Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged
Remedy as necessary.





Was a fault detected?

Yes - Verification

No - Checking mass air flow (MAF) sensor

-------------------------------------------------

Checking mass air flow (MAF) sensor
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, see Mass air flow sensor (MAF), replacing, B5234T9, B5244T7 Air Flow Meter/Sensor.






Continue - Verification

-------------------------------------------------

Verification




Verification
Test drive the car according to the TRIP schedule.
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 - VERIFICATION FAILED

No - VERIFIED

------------------------

VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

-------------------------------------------------

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

------------------------

Attempt New Test - Checking fuel injection system

-------------------------------------------------