Pinout Values and Diagnostic Parameters

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

1. SFI SYSTEM





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: Automatic Transaxle models

* *3: Manual Transaxle models

* *4: for PZEV

* *5: w/ Smart Key System

(a) WAVEFORM 1





(1) Camshaft timing oil control valve assembly operation signal





(b) WAVEFORM 2





(1) Air fuel ratio sensor (sensor 1) signal





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

(c) WAVEFORM 3





(1) Heated oxygen sensor signal





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

(d) WAVEFORM 4





(1) Fuel injector assembly operation signal





HINT
The wavelength becomes shorter as the engine rpm increases.

(e) WAVEFORM 5





(1) Knock sensor signal





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

(f) WAVEFORM 6





(1) Camshaft position sensor for exhaust side signal (A)

(2) Crankshaft position sensor signal (B)





HINT
The wavelength becomes shorter as the engine rpm increases.

(g) WAVEFORM 7





(1) Ignition, ignition confirmation signal





HINT
The wavelength becomes shorter as the engine speed increases.

(h) WAVEFORM 8





(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.

(i) WAVEFORM 9





(1) Vehicle speed signal





HINT
* The wavelength becomes shorter as the vehicle speed increases.
* Depending on the vehicle, the output waveform voltage may rise to 12 V if influenced by optionally installed systems.

(j) WAVEFORM 10





(1) Throttle actuator operation signal (positive terminal)





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

(k) WAVEFORM 11





(1) Throttle actuator operation signal (negative terminal)





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

(l) WAVEFORM 12





(1) Engine speed signal





HINT
The wavelength becomes shorter as the engine speed increases.

(m) WAVEFORM 13





(1) CAN communication signal





HINT
The waveform varies depending on the CAN communication signal.

(n) WAVEFORM 14





(1) CAN communication signal





HINT
The waveform varies depending on the CAN communication signal.

(o) WAVEFORM 15





(1) DC motor for tumble control valve signal (positive)





(p) WAVEFORM 16





(1) DC motor for tumble control valve signal (negative)





(q) WAVEFORM 17





(1) VSV for ejector system signal