3.
Has a problem been found ?
 | ▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Check MAFS" as follows. |
Check that MAFS is damaged, contaminated or deformed.
Check that air cleaner is clogged.
Has a problem been found ?
| ▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Check MAFS" as follows. |
IG "OFF" and install a GDS
ENG "ON" and monitor "MAFS" data on the service data.
Monitor signal waveform at signal terminal of MAFS with GDS.
Specification : Signal waveform will be displayed as follows. Frenquency will be increased during acceleration. (Be aware that the signal of MAFS is not voltage display but frequency display.)
Are both service data and signal waveform dispayed correctly ?
| ▶ Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure. |
| ▶ Substitute with a known - good MAFS and check for proper operation. If the problem is corrected, replace MAFS and go to "Verification of Vehicle Repair" procedure. |
