Pinout Values and Diagnostic Parameters
1UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM
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.
HINT
*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
1. WAVEFORM 1
2. WAVEFORM 2
HINT
The wavelength becomes shorter as the engine rpm increases.
3. WAVEFORM 3
HINT
In Data List, item O2S B1 S2 or O2S B2 S2 shows the ECM input values from the heated oxygen sensor.
4. WAVEFORM 4
HINT
The wavelength becomes shorter as the engine rpm increases.
5. WAVEFORM 5
HINT
The wavelength becomes shorter as the engine rpm increases.
6. WAVEFORM 6
HINT
* The wavelength becomes shorter as the engine rpm increases.
* The waveforms and amplitudes displayed differ slightly depending on the vehicle.
7. WAVEFORM 7
HINT
The wavelength becomes shorter as the engine rpm increases.
8. WAVEFORM 8
HINT
The wavelength becomes shorter as the engine rpm increases.
9. WAVEFORM 9
HINT
The wavelength becomes shorter as the engine rpm increases.
10. WAVEFORM 10
HINT
The wavelength becomes shorter as the engine rpm increases.
11. WAVEFORM 11
HINT
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
12. WAVEFORM 12
HINT
The wavelength becomes shorter as the vehicle speed increases.
13. WAVEFORM 13
HINT
The duty ratio varies depending on the throttle actuator operation.
14. WAVEFORM 14
HINT
The duty ratio varies depending on the throttle actuator operation.
15. WAVEFORM 15
HINT
The wavelength becomes shorter as the engine rpm increases.
16. WAVEFORM 16
17. WAVEFORM 17
18. WAVEFORM 18
HINT
The waveform varies depending on the CAN communication signal.
19. WAVEFORM 19
HINT
The waveform varies depending on the CAN communication signal.
20. WAVEFORM 20
21. WAVEFORM 21
22. WAVEFORM 22
HINT
The wavelength becomes shorter as the engine rpm increases.
23. WAVEFORM 23
HINT
The wavelength becomes shorter as the engine rpm increases.
24. WAVEFORM 24
HINT
The wavelength becomes shorter as the engine rpm increases.