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 1 ms./DIV. WAVEFORM 1 Table 2. Camshaft Timing Oil Control Valve Assembly Signal ECM Terminal Name Between OC1+ and OC1- Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling Table 3. *a 5 V/DIV. *b 10 ms./DIV. WAVEFORM 2 Table 4. Air Fuel Ratio Sensor (Sensor 1) Heater Operation Signal ECM Terminal Name Between HA1A and E04 Tester Range 5 V/DIV., 10 ms./DIV. Condition Idling Tip: The wavelength varies in accordance with the engine operating condition. Table 5. *1 0.2 V/DIV. *2 200 ms./DIV. WAVEFORM 3 Table 6. Heated Oxygen Sensor (Sensor 2) Signal ECM Terminal Name Between OX1B and EX1B 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, the item O2S B1S2 shows the values input to the ECM from the heated oxygen sensor. Table 7. *1 20 V/DIV. *2 20 ms./DIV. WAVEFORM 4 Table 8. No. 1 (to No. 4) Fuel Injector Assembly Signal ECM Terminal Name Between #10 (to #40) and E01 Tester Range 20 V/DIV., 20 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 9. *a 1 V/DIV. *b 1 ms./DIV. WAVEFORM 5 Table 10. Knock Control Sensor Signal ECM Terminal Name Between KNK1 and EKNK Tester Range 1 V/DIV., 1 ms./DIV. Condition Engine speed maintained at 2500 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 11. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 6 Table 12. Camshaft Position Sensor Signal ECM Terminal Name Between VV1+ and VV1- Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 13. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 7 Table 14. Camshaft Revolution Signal from ECM to Power Management Control ECU and Inverter with Converter Assembly ECM Terminal Name Between G2O and E1 Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 15. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 8 Table 16. Crankshaft Position Sensor Signal ECM Terminal Name Between NE+ and NE- Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 17. *a 2 V/DIV. *b 20 ms./DIV. WAVEFORM 9 Table 18. Ignition Coil Assembly Signal (IGT and IGF Signal) ECM Terminal Name CH1: Between IGT (1 to 4) and E1 CH2: Between IGF1 and E1 Tester Range 2 V/DIV., 20 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 19. *1 10 V/DIV. *2 20 ms./DIV. WAVEFORM 10 Table 20. Purge VSV Signal ECM Terminal Name Between PRG and E01 Tester Range 10 V/DIV., 20 ms./DIV. Condition Idling, 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. *a 5 V/DIV. *b 1 ms./DIV. WAVEFORM 11 Table 22. 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 23. *a 5 V/DIV. *b 1 ms./DIV. WAVEFORM 12 Table 24. 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 25. *a 5 V/DIV. *b 10 ms./DIV. WAVEFORM 13 Table 26. Engine Speed Signal ECM Terminal Name Between TACH and E1 Tester Range 5 V/DIV., 10 ms./DIV. Condition Idling Tip: The wavelength becomes shorter as the engine speed increases. Table 27. *a 1 V/DIV. *b 10 μs./DIV. WAVEFORM 14 Table 28. CAN Communication Signal (Reference) ECM Terminal Name Between CANH and E1, or CANP and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Power switch on (IG) Tip: The waveform varies depending on the CAN communication signal. Table 29. *a 1 V/DIV. *b 10 μs./DIV. WAVEFORM 15 Table 30. CAN Communication Signal (Reference) ECM Terminal Name Between CANL and E1, or CANN and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Power switch on (IG) Tip: The waveform varies depending on the CAN communication signal. Table 31. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 16 Table 32. Engine Water Pump Assembly Signal (from Engine Water Pump Assembly to ECM) ECM Terminal Name Between WPI and E1 Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine water pump assembly speed increases. Table 33. *a 5 V/DIV. *b 20 ms./DIV. WAVEFORM 17 Table 34. Engine Water Pump Assembly Signal (from ECM to Engine Water Pump Assembly) ECM Terminal Name Between WPO and E1 Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tip: The wavelength becomes shorter as the engine water pump assembly speed increases. Table 35. *a 1 V/DIV. *b 20 ms./DIV. WAVEFORM 18 Table 36. Cooling Fan Control Signal ECM Terminal Name Between RFC and E1 Tester Range 1 V/DIV., 20 ms./DIV. Condition Power switch on (IG), A/C switch on (max cool) Tip: The duty ratio varies depending on the engine coolant temperature.