Toyota 1 MZ–FE Manual page 455

2
Check for open in harness or ECM.
3
Check for open in harness or ECM.
Confirm good connection at ECM.
If OK, replace ECM..
1MZ–FE ENGINE – CIRCUIT INSPECTION
(1) Disconnect the mass air flow meter connec–
tor.
(2) Connect sensor wire harness terminals to–
gether.
(3) Turn ignition switch ON.
Read temperature value on the OBDll scan tool or
TOYOTA hand–held tester.
Temperature value: 120 C (248 F) or more
Confirm good connection at sensor.
If OK, replace mass air flow meter.
(1) Remove glove compartment.
(See page EG2–309)
(2) Connect between terminals THA and E2 of
ECM E8 connector.
HINT: Mass air flow meter connector is disconnected.
Before checking, do a visual and contact pres–
sure check for the ECM connector. (See page
EG2–418)
(3) Turn ignition switch ON.
Read temperature value on the OBDII scan tool or
TOYOTA hand–held tester.
Temperature value: 120 C (248 F) or more
Open in harness between terminals E2 or
THA, repair or replace harness.
EG2–455