Pinout Values and Diagnostic Parameters

2ZR-FE 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 the terminals, and displayed in the "Specified Conditions" 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





Igniter IGT signal (from ECM to igniter)





HINT
The wavelength becomes shorter as the engine speed increases.

2. WAVEFORM 2





Crankshaft position sensor





HINT
The wavelength becomes shorter as the engine rpm increases.

3. WAVEFORM 3





Camshaft position sensor





HINT
The wavelength becomes shorter as the engine rpm increases.

4. WAVEFORM 4





No. 1 (to No. 4) injector signal





HINT
The wavelength becomes shorter as the engine rpm increases.

5. WAVEFORM 5





Air fuel ratio sensor heater





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

6. WAVEFORM 6





Heated oxygen sensor





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

7. WAVEFORM 7





Knock sensor





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

8. WAVEFORM 8





Vehicle speed signal





HINT
The wavelength becomes shorter as the vehicle speed increases.

9. WAVEFORM 9





Throttle actuator positive terminal





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

10. WAVEFORM 10





Throttle actuator negative terminal





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

11. WAVEFORM 11





Purge VSV





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

12. WAVEFORM 12





Engine speed signal





HINT
The wavelength becomes shorter as the engine rpm increases.

13. WAVEFORM 13





Camshaft timing oil control valve (for intake camshaft)





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





Camshaft timing oil control valve (for exhaust camshaft)