11.
Is output signal within the specification?
YES
a.
Go to "Verification of Vehicle Repair".
NO
a.
Replace MAFS assy’ and go to "Verification of Vehicle Repair".
IG KEY "OFF", ENGINE "OFF".
Check that MAFS is installed in correctly according to the direction of arrow on MAFS assy’.
Check contamination of air cleaner filter.
IG KEY "ON", ENGINE "ON".
Let IDLE RPM last after warming engine up.
Check the leakage of intake system(the leakage or damage of intercooler).
Check that VGT operates correctly.(Check if vacuum operating state of VGT Control solenoid valve is appropriate, if VGT diaphragm and unison ring are stuck.)
Check that Electric EGR control valve does not operate.
( Electric EGR control valve turns "OFF" and 6% duty is outputted 1 min after rapid acceleration. Disconnect EElectric EGR control valve connector if needed. )
Monitor signal voltage of MAFS when engine speed lasts at approx. 800RPM using Scantool.
Check MAFS output signal at idle after rapid acceleration.(Electric EGR control valve duty 50%)
Specification : When EEGR actuator does not operate (6%) at idle : 340mg/st ± 50 mg/st
EEGR When EEGR actuator operates(50%) at idle : 200ms/st ± 50 mg/st
Is output signal within the specification?
YES
Go to "Verification of Vehicle Repair".
NO
Replace MAFS assy’ and go to "Verification of Vehicle Repair".
