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 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, which is 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





Camshaft Timing Oil Control Valve





2. WAVEFORM 2





Heated Oxygen Sensor





HINT
In the Data List, items O2S B1S2 and O2S B2S2 show the ECM input values from the heated oxygen sensors.

3. WAVEFORM 3





Fuel Injector





HINT
The wavelength becomes shorter as the engine speed increases.

4. WAVEFORM 4





Knock Sensor





HINT
* The wavelength becomes shorter as the engine speed 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 speed 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 speed increases.

7. WAVEFORM 7





Purge VSV





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

8. WAVEFORM 8





Vehicle Speed Signal





HINT
The wavelength becomes shorter as the vehicle speed increases.

9. WAVEFORM 9





Positive Terminal of Throttle Actuator





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

10. WAVEFORM 10





Negative Terminal of Throttle Actuator





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

11. WAVEFORM 11





Engine Speed Signal





HINT
The wavelength becomes shorter as the engine speed increases.

12. WAVEFORM 12





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

13. WAVEFORM 13





CAN Communication Signal (Reference)





HINT
The waveform varies depending on the CAN communication signal.

14. WAVEFORM 14





Terminal AID of Air Injection Control Driver





HINT
The wavelength changes when the air injection control driver detects malfunctions in the secondary air injection system P1613.

15. WAVEFORM 15





Crankshaft Position Sensor and VVT Sensor





HINT
The wavelength becomes shorter as the engine speed increases.