SFI SYSTEM TERMINALS OF ECM

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

Table 1. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 1 Table 2. Vehicle Speed Signal ECM Terminal Name Between SPD and E1 Tester Range 5 V/DIV., 20 ms./DIV. Condition Driving at 20 km/h (12 mph) Tip: The wavelength becomes shorter as the vehicle speed increases. Table 3. *a 1 V/DIV. *b 10 μs./DIV. WAVEFORM 2 Table 4. CAN Communication Signal (Reference) ECM Terminal Name Between CANH and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Ignition switch ON Tip: The waveform varies depending on the CAN communication signal. Table 5. *a 5 V/DIV. *b 2 ms./DIV. WAVEFORM 3 Table 6. Engine Speed Signal ECM Terminal Name Between NEO and E1 Tester Range 5 V/DIV., 2 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine speed increases. Table 7. *a 5 V/DIV. *b 10 ms./DIV. WAVEFORM 4 Table 8. Engine Speed Signal ECM Terminal Name Between TACH and E1 Tester Range 5 V/DIV., 10 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine speed increases. Table 9. *a 1 V/DIV. *b 10 μs./DIV. WAVEFORM 5 Table 10. CAN Communication Signal (Reference) ECM Terminal Name Between CANL and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Ignition switch ON Tip: The waveform varies depending on the CAN communication signal. Table 11. *a 5 V/DIV. *b 1 ms./DIV. WAVEFORM 6 Table 12. Camshaft Timing Oil Control Valve Assembly (for Intake Camshaft) Operation Signal ECM Terminal Name Between OC1+ and OC1-, or OC2+ and OC2- Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling Table 13. *a 5 V/DIV. *b 10 ms./DIV. WAVEFORM 7 Table 14. Air Fuel Ratio Sensor (Sensor 1) Heater Operation Signal ECM Terminal Name Between HA1A and E04, or HA2A and E05 Tester Range 5 V/DIV., 10 ms./DIV. Condition Idling with cold engine Table 15. *a 5 V/DIV. *b 1 ms./DIV. WAVEFORM 8 Table 16. Throttle Actuator Negative Terminal Signal ECM Terminal Name Between M- and ME01 Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling with warm engine Tip: The duty ratio varies depending on the throttle actuator operation. Table 17. *a 5 V/DIV. *b 1 ms./DIV. WAVEFORM 9 Table 18. Throttle Actuator Positive Terminal Signal ECM Terminal Name Between M+ and ME01 Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling with warm engine Tip: The duty ratio varies depending on the throttle actuator operation. Table 19. *1 10 V/DIV. *2 20 ms./DIV. WAVEFORM 10 Table 20. Purge VSV Operation Signal ECM Terminal Name Between PRG and E1 Tester Range 10 V/DIV., 20 ms./DIV. Condition Idling with warm engine, under purge control Tip: If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more. Table 21. *1 20 V/DIV. *2 20 ms./DIV. WAVEFORM 11 Table 22. No. 1 (to No. 6) Fuel Injector Assembly Signal ECM Terminal Name Between #10 (to #60) and E01 Tester Range 20 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine speed increases. Table 23. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 12 Table 24. Crankshaft Position Sensor Signal and VVT Sensor (for Intake Camshaft) Signal ECM Terminal Name Between NE+ and NE- Between VV1+ and VV1- Between VV2+ and VV2- Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine speed increases. Table 25. *a 1 V/DIV. *b 1 ms./DIV. WAVEFORM 13 Table 26. Knock Control Sensor Signal ECM Terminal Name Between KNK1 and EKNK, or KNK2 and EKN2 Tester Range 1 V/DIV., 1 ms./DIV. Condition Engine speed maintained at 4000 rpm after warming up engine Tip: The wavelength becomes shorter as the engine speed increases. The waveforms and amplitudes displayed differ slightly depending on the vehicle condition. Table 27. *1 0.2 V/DIV. *2 200 ms./DIV. WAVEFORM 14 Table 28. Heated Oxygen Sensor (Sensor 2) Signal ECM Terminal Name Between OX1B and EX1B, or OX2B and EX2B Tester Range 0.2 V/DIV., 200 ms./DIV. Condition Engine speed maintained at 2500 rpm for 2 minutes after warming up engine Tip: In the Data List, item O2S B1S2 and O2S B2S2 shows the ECM values from the heated oxygen sensor. Table 29. *a 2 V/DIV. *b 20 ms./DIV. WAVEFORM 15 Table 30. Ignition Coil Assembly Signal (IGT and IGF1 Signal) ECM Terminal Name Between IGT (1 to 6) and E1 Between IGF1 and E1 Tester Range 2 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine speed increases.