Pinout Values and Diagnostic Parameters

1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM





Measure the voltage according to the value(s) in the table below.

HINT
The standard normal 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 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.

1. WAVEFORM 1









2. WAVEFORM 2









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

3. WAVEFORM 3









HINT
The wavelength becomes shorter as the engine rpm increases.

4. WAVEFORM 4









HINT
* The wavelength becomes shorter as the engine rpm increases.
* The waveforms and amplitudes displayed on the Techstream differ slightly depending on the vehicle.
5. WAVEFORM 5





(a) Crankshaft position sensor

(b) VVT sensor





HINT
The wavelength becomes shorter as the engine rpm increases.

6. WAVEFORM 6





(a) Igniter IGT signal (from ECM to igniter)

(b) Igniter IGF signal (from igniter to ECM)





HINT
The wavelength becomes shorter as the engine rpm increases.

7. WAVEFORM 7









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

8. WAVEFORM 8









HINT
The wavelength becomes shorter as the vehicle speed increases.

9. WAVEFORM 9









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

10. WAVEFORM 10









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

11. WAVEFORM 11









HINT
The wavelength becomes shorter as the engine rpm increases.

12. WAVEFORM 12









HINT
The wavelength varies depending on the CAN communication signal.

13. WAVEFORM 13









HINT
The wavelength varies depending on the CAN communication signal.

14. WAVEFORM 14









HINT
The wavelength changes when the air injection control driver detects malfunctions in the air injection system P0412