Toyota 1 MZ–FE Manual page 459

INSPECTION PROCEDURE
HINT; If diagnostic trouble codes "P0110" (intake air temp. circuit malfunction), "P0115" (engine
coolant temp. circuit malfunction), "P0120" (throttle position circuit malfunction) are output
simultaneously, E2 (sensor ground) may be open.
Connect the OBD II scan tool or TOYOTA hand–held tester, and read
1
value of engine coolant temperature.
Check for intermittent problems.
(See page EG2–417)
1MZ–FE ENGINE – CIRCUIT INSPECTION
(1) Remove the fuse cover on the instrument
panel.
(2) Connect the 0BDII scan tool or TOYOTA
hand–held tester to the DLC 3.
(3) Turn ignition switch ON and OBDII scan tool
or TOYOTA hand–held tester main switch
ON.
Read temperature value on the OBDII scan tool or
TOYOTA hand–held tester.
Same as actual engine coolant temperature.
If there is open circuit, OBD II scan tool or
TOYOTA hand–held tester indicates – 402C
(– 402 F).
If there is short circuit, OBD II scan tool or
TOYOTA hand–held tester indicates 1202C
(2482F) or more.
– 40
120
2 2
C (– 40 F) .......... Go to step
2 2
C (248 F) or more . . Go to step
EG2–459
2
3