Check Sensors Related To Fuel Trim
- Check the Input Voltage of Sensors related to Fuel Trim(MAPS, TPS, ECTS, PCSV, Injector, and etc) - Refer to TROUBLESHOOTING .
- Are the sensors related to Fuel Trim O.K?
YES
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to Verification Of Vehicle Repair procedure below.
NO
- Repair as necessary and go to Verification Of Vehicle Repair procedure below.