Component Inspection

Component Inspection

1. Visual Inspection
(1) Check that MAFS is damaged, contaminated or deformed.
(2) Check the air cleaner is clogged.
(3) Has a problem been found?
YES
- Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
- Go to "Check MAFS" as follows
2. Check MAFS
(1) IG "OFF" and install a scantool
(2) ENG "ON" and monitor "MAFS" data on the service data.
(3) Monitor signal waveform at terminal 1 of MAFS with scantool.
Specification : Signal waveform will be displayed as follows. (Be aware that the signal of MAFS is not voltage display but frequency display.)




(4) Are both service data and signal wave form dispayed correctly?
YES
- Go to "Verification of Vehicle Repair" procedure.
NO
- 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.