Component Inspection

Visual Inspection
1. Check that MAPS 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 " 2Check MAPS" as follows
Check MAPS
1. IG "OFF" and install a scantool
2. ENG "ON" and monitor "MAPS" data on the service data.
3. Monitor signal waveform at terminal 1 of MAPS with scantool.
  Specification: Signal waveform will be displayed as follows. (Be aware that the signal of MAPS is not voltage display but frequency display.)
  
  Fig 1: Identifying Signal Waveform
4. Are both service data and signal wave form displayed correctly?
  YES
  - Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good MAPS and check for proper operation. If the problem is corrected, replace MAPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.