- Connect the MAF sensor 5P connector terminals No. 4 and No. 5 with a jumper wire.
Wire side of female terminals
MAF/IAT sensor 5P connector
JUMPER WIRE
- Turn the ignition switch ON (II).
- Check the MAF with the scan tool.
Is about 5 V indicated?
YES – Replace the MAF/IAT sensor. 
NO – Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM.
| NOTICE |
The battery power supply short circuit to 5 V power supply damages the ECM.
