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 actuator is appropriate, if VGT diaphragm and unison ring are stuck.)
Check that EEGR actuator does not operate.
( EEGR actuator turns "OFF" and 4.4% duty is outputted 3 min. after rapid acceleration. )
Monitor signal voltage of MAFS when engine speed lasts at approx. 800RPM using Scantool.
Check MAFS output signal at idle after rapid acceleration.(EEGR actuator duty 45%)
Specification : When EEGR actuator does not operate (5%) at idle : 410mg/st ± 50 mg/st
EEGR When EEGR actuator operates(45%) at idle : 360mg/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".
