Pinout Values and Diagnostic Parameters

2ZR-FE 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 the terminals, and displayed in the "Specified Conditions" column. The illustration above can be used as a reference to identify the ECM terminal locations.

















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

1. WAVEFORM 1

Igniter IGT signal (from ECM to igniter):

HINT
The wavelength becomes shorter as the engine rpm increases.

2. WAVEFORM 2

Crankshaft position sensor and camshaft position sensor:

HINT
The wavelength becomes shorter as the engine rpm increases.

3. WAVEFORM 3

No. 1 (to No. 4) injector signal:

HINT
The wavelength becomes shorter as the engine rpm increases.

4. WAVEFORM 4

Air fuel ratio sensor (sensor 1) heater:

HINT
The wavelength varies in accordance with the engine operating condition.

5. WAVEFORM 5

Heated oxygen sensor (sensor 2):

HINT
In the Data List, the items O2S B1S2 show the values input to the ECM from the heated oxygen sensor.

6. WAVEFORM 6

Knock sensor:

HINT
* The wavelength becomes shorter as the engine rpm increases.
* The waveforms and amplitudes displayed differ slightly depending on the vehicle condition.
7. WAVEFORM 7

Vehicle speed signal:

HINT
The wavelength becomes shorter as the vehicle speed increases.

8. WAVEFORM 8

Throttle actuator positive terminal:

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

9. WAVEFORM 9

Throttle actuator negative terminal:

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

10. WAVEFORM 10

Purge VSV:

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

11. WAVEFORM 11

Engine speed signal:

HINT
The wavelength becomes shorter as the engine rpm increases.

12. WAVEFORM 12

Camshaft timing oil control valve (OCV) (for intake camshaft):

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

Camshaft timing oil control valve (OCV) (for exhaust camshaft):