Engine Control Module

1UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM

TERMINALS OF ECM

Connectors:

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.

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

Terminals Of ECM:

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

Waveform 1:

1. WAVEFORM 1

Hint:

Waveform 2:

2. WAVEFORM 2

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 3:

3. WAVEFORM 3

Hint:

HINT: In Data List, item O2S B1 S2 or O2S B2 S2 shows the ECM input values from the heated oxygen sensor.

Waveform 4:

4. WAVEFORM 4

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 5:

5. WAVEFORM 5

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 6:

6. WAVEFORM 6

Hint:

- The wavelength becomes shorter as the engine rpm increases.
- The waveforms and amplitudes displayed differ slightly depending on the vehicle.

Waveform:

7. WAVEFORM 7

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform:

8. WAVEFORM 8

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform:

9. WAVEFORM 9

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 10:

10. WAVEFORM 10

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 11:

11. WAVEFORM 11

Hint:

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

Waveform 12:

12. WAVEFORM 12

Hint:

HINT: The wavelength becomes shorter as the vehicle speed increases.

Waveform 13:

13. WAVEFORM 13

Hint:

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

Waveform 14:

14. WAVEFORM 14

Hint:

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

Waveform:

15. WAVEFORM 15

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform:

16. WAVEFORM 16

Hint:

Waveform:

17. WAVEFORM 17

Hint:

Waveform:

18. WAVEFORM 18

Hint:

HINT: The waveform varies depending on the CAN communication signal.

Waveform:

19. WAVEFORM 19

Hint:

HINT: The waveform varies depending on the CAN communication signal.

Waveform 20:

20. WAVEFORM 20

Hint:

Waveform 21:

21. WAVEFORM 21

Hint:

Waveform 22:

22. WAVEFORM 22

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 23:

23. WAVEFORM 23

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.

Waveform 24:

24. WAVEFORM 24

Hint:

HINT: The wavelength becomes shorter as the engine rpm increases.