Pinout Values and Diagnostic Parameters

1AR-FE ENGINE CONTROL SYSTEM: 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.

















HINT
*1: The ECM terminal voltage is constant regardless of the output voltage shown on the Techstream.

1. WAVEFORM 1





Camshaft Timing Oil Control Valve Signal





2. WAVEFORM 2





Air Fuel Ratio Sensor (Bank 1 Sensor 1) Heater Signal





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

3. WAVEFORM 3





Heated Oxygen Sensor (Bank 1 Sensor 2) Signal





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

4. WAVEFORM 4





Injector No. 1 (to No. 4) Injection Signal





HINT
The wavelength becomes shorter as the engine speed increases.

5. WAVEFORM 5





Knock Sensor Signal





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

6. WAVEFORM 6





Crankshaft Position Sensor Signal





HINT
The wavelength becomes shorter as the engine speed increases.

7. WAVEFORM 7





Camshaft Position Sensor Signal





HINT
The wavelength becomes shorter as the engine speed increases.

8. WAVEFORM 8





Ignition Coil IGT Signal (from ECM to Ignition Coil) and Ignition Coil IGF Signal (from Ignition Coil to ECM)





HINT
The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9





Purge VSV Signal





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

10. WAVEFORM 10





Vehicle Speed Signal





HINT
The wavelength becomes shorter as the vehicle speed increases.

11. WAVEFORM 11





Throttle Actuator Positive Terminal Signal





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

12. WAVEFORM 12





Throttle Actuator Negative Terminal Signal





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

13. WAVEFORM 13





Engine Speed Signal





HINT
The wavelength becomes shorter as the engine speed increases.

14. WAVEFORM 14





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

15. WAVEFORM 15





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

16. WAVEFORM 16





DC Motor for Tumble Control Valve Positive Terminal Signal





17. WAVEFORM 17





DC Motor for Tumble Control Valve Negative Terminal Signal





18. WAVEFORM 18





CAN Communication Signal





HINT
The waveform varies depending on the CAN communication signal.

19. WAVEFORM 19





CAN Communication Signal





HINT
The waveform varies depending on the CAN communication signal.