Pinout Values and Diagnostic Parameters

2AR-FE ENGINE CONTROL: SFI SYSTEM: TERMINALS OF ECM





HINT
The standard 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 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.





















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

* *2: w/ Smart Key System.

1. WAVEFORM 1





Camshaft Timing Oil Control Valve Assembly (for Intake Camshaft) Operation Signal





2. WAVEFORM 2





Camshaft Timing Oil Control Valve Assembly (for Exhaust Camshaft) Operation Signal





3. WAVEFORM 3





Air Fuel Ratio Sensor (Sensor 1) Heater Operation Signal





HINT
The wavelength varies in accordance with the engine operating condition.

4. WAVEFORM 4





Heated Oxygen Sensor (Sensor 2) Signal





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

5. WAVEFORM 5





No. 1 (to No. 4) Fuel Injector Assembly Signal





HINT
The wavelength becomes shorter as the engine speed increases.

6. WAVEFORM 6





Knock Control Sensor Signal





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

7. WAVEFORM 7





Camshaft Position Sensor Signal (for Intake and Exhaust Camshaft)





HINT
The wavelength becomes shorter as the engine speed increases.

8. WAVEFORM 8





Crankshaft Position Sensor Signal





HINT
The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9





Ignition Coil Assembly Signal (IGT and IGF Signal)





HINT
The wavelength becomes shorter as the engine speed increases.

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





Vehicle Speed Signal





HINT
The wavelength becomes shorter as the vehicle speed increases.

12. WAVEFORM 12





Throttle Actuator Positive Terminal Signal





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

13. WAVEFORM 13





Throttle Actuator Negative Terminal Signal





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

14. WAVEFORM 14





Engine Speed Signal





HINT
The wavelength becomes shorter as the engine speed increases.

15. WAVEFORM 15





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

16. WAVEFORM 16





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

17. WAVEFORM 17





Positive Terminal of Intake Air Control Valve Actuator (for Tumble Control Valve) Signal





18. WAVEFORM 18





Negative Terminal of Intake Air Control Valve Actuator (for Tumble Control Valve) Signal





19. WAVEFORM 19





Crankshaft Position Sensor Signal





HINT
The wavelength becomes shorter as the engine speed increases.