Pinout Values and Diagnostic Parameters
1AR-FE ENGINE CONTROL: SFI SYSTEM: TERMINALS OF ECM
TERMINALS OF ECM
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, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
- *1: The ECM terminal voltage is constant regardless of the output voltage shown on the Techstream.
- *2: w/ Smart Key System
1. WAVEFORM 1
Camshaft Timing Oil Control Valve Signal
2. WAVEFORM 2
Air Fuel Ratio Sensor (Bank 1 Sensor 1) Heater Signal
HINT: The wavelength varies in accordance with the engine operating condition.
3. WAVEFORM 3
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal
HINT: In the Data List, item O2S B1 S2 shows the ECM input values from the heated oxygen sensor.
4. WAVEFORM 4
Injector No. 1 (to No. 4) Injection Signal
HINT: The wavelength becomes shorter as the engine speed increases.
5. WAVEFORM 5
Knock Sensor Signal
HINT:
- The wavelength becomes shorter as the engine speed increases.
- The waveforms and amplitudes displayed differ slightly depending on the vehicle.
6. WAVEFORM 6
Crankshaft Position Sensor and Camshaft Position Sensor Signal
HINT: The wavelength becomes shorter as the engine speed increases.
7. WAVEFORM 7
Ignition Coil IGT Signal (from ECM to Ignition Coil) and Ignition Coil IGF Signal (from Ignition Coil to ECM)
HINT: The wavelength becomes shorter as the engine speed increases.
8. WAVEFORM 8
Purge VSV Signal
HINT: If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
9. WAVEFORM 9
Vehicle Speed Signal
HINT: The wavelength becomes shorter as the vehicle speed increases.
10. WAVEFORM 10
Throttle Actuator Positive Terminal Signal
HINT: The duty ratio varies depending on the throttle actuator operation.
11. WAVEFORM 11
Throttle Actuator Negative Terminal Signal
HINT: The duty ratio varies depending on the throttle actuator operation.
12. WAVEFORM 12
Engine Speed Signal
HINT: The wavelength becomes shorter as the engine speed increases.
13. WAVEFORM 13
CAN Communication Signal (Reference)
HINT: The waveform varies depending on the CAN communication signal.
14. WAVEFORM 14
CAN Communication Signal (Reference)
HINT: The waveform varies depending on the CAN communication signal.
15. WAVEFORM 15
DC Motor for Tumble Control Valve Positive Terminal Signal
16. WAVEFORM 16
DC Motor for Tumble Control Valve Negative Terminal Signal
17. WAVEFORM 17
Crankshaft Position Sensor Signal
