Toyota 1 MZ–FE Manual page 470

EG2–470
INSPECTION PROCEDURE
OBD II scan tool (excluding TOYOTA hand–held tester)
HINT: If diagnostic trouble codes P0110, P0115, and P0120 are output simultaneously, E2 (sensor
ground) may be open.
Connect the OBD II scan tool and read the throttle valve opening
percentage (See page EG2–467, step 1 ).
Check voltage of terminal IDL and E2 of ECM.
Check voltage between terminal VC of wire harness side connector
and body ground (See page EG2–468, step 3).
Check throttle position sensor (See page EG2–468, step 4).
1MZ–FE ENGINE – CIRCUIT INSPECTION
Check for intermittent problems.
(See page EG2–417)
(1) Remove glove compartment.
(See page EG2–309)
(2) Turn ignition Switch ON.
Measure voltage between terminals IDL and E2 of
ECM.
Throttle Valve
Go to step
Go to step
Replace throttle position sensor.
Fully closed
Fully open
Voltage
0 – 3.0 V
9–14V