Pinout Values and Diagnostic Parameters

1NZ-FE ENGINE CONTROL: SFI SYSTEM (for Hatchback): TERMINALS OF ECM





HINT
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

















*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

1. WAVEFORM 1





Igniter Signal (IGT and IGF signal)





HINT
The wavelength becomes shorter as the engine speed increases.

2. WAVEFORM 2





Crankshaft Position Sensor Signal and Camshaft Position Sensor Signal





HINT
The wavelength becomes shorter as the engine speed increases.

3. WAVEFORM 3





No. 1 (to No. 4) Injector Signal





HINT
The wavelength becomes shorter as the engine speed increases.

4. WAVEFORM 4





Air Fuel Ratio Sensor Heater Signal





HINT
The duty ratio varies depending on the engine driving condition.

5. WAVEFORM 5





Heated Oxygen Sensor Signal





HINT
In the Data List, the item O2S B1S2 shows the values input to the ECM from the heated oxygen sensor.

6. WAVEFORM 6





Knock Sensor Signal





HINT
* The wavelength becomes shorter as the engine speed increases.
* The waveforms and amplitudes displayed differ slightly depending on the vehicle.

7. WAVEFORM 7





Vehicle Speed Signal





HINT
The wavelength becomes shorter as the vehicle speed increases.

8. WAVEFORM 8





Throttle Actuator Positive Terminal Signal





HINT
The duty ratio varies depending on the throttle actuator operation.

9. WAVEFORM 9





Throttle Actuator Negative Terminal Signal





HINT
The duty ratio varies depending on the throttle actuator operation.

10. WAVEFORM 10





Purge VSV Signal





HINT
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

11. WAVEFORM 11





Camshaft Timing Oil Control Valve Assembly Signal





12. WAVEFORM 12





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

13. WAVEFORM 13





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

14. WAVEFORM 14





Engine Speed Signal





HINT
The wavelength becomes shorter as the engine speed increases.