Pinout Values and Diagnostic Parameters

2GR-FXE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM

1. SFI SYSTEM





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.

















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

(a) WAVEFORM 1





(1) Camshaft timing oil control valve assembly operation signal





HINT
The wavelength becomes shorter as the engine speed increases.

(b) WAVEFORM 2





(1) Heated oxygen sensor signal





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

(c) WAVEFORM 3





(1) Fuel injector assembly operation signal





HINT
The wavelength becomes shorter as the engine speed increases.

(d) WAVEFORM 4





(1) 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.

(e) WAVEFORM 5





(1) Variable Valve Timing (VVT) sensor (A)

(2) Crankshaft position sensor signal (B)





HINT
The wavelength becomes shorter as the engine speed increases.

(f) WAVEFORM 6





(1) 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.

(g) WAVEFORM 7





(1) Purge VSV for EVAP system operation signal





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

(h) WAVEFORM 8





(1) Throttle actuator operation signal (positive terminal)





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

(i) WAVEFORM 9





(1) Throttle actuator operation signal (negative terminal)





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

(j) WAVEFORM 10





(1) CAN communication signal





HINT
The waveform varies depending on the CAN communication signal.

(k) WAVEFORM 11





(1) CAN communication signal





HINT
The waveform varies depending on the CAN communication signal.

(l) WAVEFORM 12





(1) Air fuel ratio sensor and heated oxygen sensor heater operation signal





HINT
The wavelength becomes shorter as the engine speed increases.

(m) WAVEFORM 13





(1) EGR valve assembly signal





(n) WAVEFORM 14





(1) Camshaft revolution signal from ECM to hybrid vehicle control ECU or inverter with converter assembly





HINT
The wavelength becomes shorter as the engine speed increases.