Pinout Values and Diagnostic Parameters

1UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM





HINT
The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the 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.





























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

1. WAVEFORM 1





Camshaft timing oil control valve (OCV) (Exhaust side):





2. WAVEFORM 2





A/F sensor heater:





3. WAVEFORM 3





Heated oxygen sensor:





HINT
In Data List, item O2S B1S2 or O2S B2S2 shows the ECM input values from the heated oxygen sensor.

4. WAVEFORM 4





Injector for port injection No. 1 (to No. 8) injection signal:





HINT
* The wavelength becomes shorter as the engine speed increases.
* When the port injection injectors are operating, Port is displayed for Injection Way of the Data List.

5. WAVEFORM 5





Injector for direct injection No. 1 (to No. 8) injection signal and Injection confirmation signal:





HINT
* The wavelength becomes shorter as the engine speed increases.
* When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.

6. WAVEFORM 6





Knock sensor:





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

7. WAVEFORM 7





VVT sensor for intake side:





HINT
The wavelength becomes shorter as the engine speed increases.

8. WAVEFORM 8





VVT sensor for exhaust side:





HINT
The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9





Camshaft position sensor:





HINT
The wavelength becomes shorter as the engine speed increases.

10. WAVEFORM 10





Crankshaft position sensor:





HINT
The wavelength becomes shorter as the engine speed increases.

11. WAVEFORM 11





Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM):





HINT
The wavelength becomes shorter as the engine speed increases.

12. WAVEFORM 12





Purge VSV:





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

13. WAVEFORM 13





Vehicle speed signal:





HINT
The wavelength becomes shorter as the vehicle speed increases.

14. WAVEFORM 14





Throttle actuator negative terminal:





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

15. WAVEFORM 15





Throttle actuator positive terminal:





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

16. WAVEFORM 16





Engine speed signal:





HINT
The wavelength becomes shorter as the engine speed increases.

17. WAVEFORM 17





Fuel pump for high pressure (spill control valve) (bank 1):





18. WAVEFORM 18





Fuel pump for high pressure (spill control valve) (bank 2):





19. WAVEFORM 19





CAN communication signal:





HINT
The waveform varies depending on the CAN communication signal.

20. WAVEFORM 20





CAN communication signal:





HINT
The waveform varies depending on the CAN communication signal.

21. WAVEFORM 21





Intake air control valve signal





22. WAVEFORM 22





Camshaft timing control motor EMD signal:





HINT
The wavelength becomes shorter as the engine speed increases.

23. WAVEFORM 23





Camshaft timing control motor EMR signal:





HINT
The wavelength becomes shorter as the engine speed increases.

24. WAVEFORM 24





Camshaft timing control motor EDT signal:





HINT
The wavelength becomes shorter as the engine speed increases.