Toyota 1 MZ–FE Manual page 549

OBDII scan tool (excluding TOYOTA hand–held tester)
Check for open in harness or ECM.
Check for open in harness and connector between throttle position
sensor and ECM (See page IN–31).
Confirm connection at ECM. If OK, replace ECM.
1MZ–FE ENGINE – CIRCUIT INSPECTION
(1) Disconnect the throttle position sensor con–
nector.
(2) Turn ignition switch ON.
Measure voltage between terminals 1 and 2 of
throttle position sensor connector.
Voltage: 9 –14 V
Confirm good connection at sensor.
If OK, replace throttle position sensor.
Open in harness between ECM and
throttle position sensor.
EG2–549