Sfi system

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 check results should be compared with the standard normal voltage for that pair of terminals, listed 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 from the sensor.

(a) WAVEFORM 1
(1) Camshaft Timing Oil Control Valve (OCV)
operation signal

HINT:
The wavelength becomes shorter as the engine rpm increases.

(b) WAVEFORM 2
(1) Heated oxygen sensor signal

HINT:
In the DATA LIST, item O2S B1S2 shows the ECM input values from the heated oxygen sensor.

(c) WAVEFORM 3
(1) Fuel injector operation signal

HINT:
The wavelength becomes shorter as the engine rpm increases.

(d) WAVEFORM 4
(1) Knock sensor signal

HINT:

(e) WAVEFORM 5
(1) Variable Valve Timing (VVT) sensor signal (1)
(2) Crankshaft position sensor signal (2)

HINT:
The wavelength becomes shorter as the engine rpm increases.
(f) WAVEFORM 6
(1) Igniter IGT signal (from ECM to igniter) (1)
(2) Igniter IGF signal (from igniter to ECM) (2)

HINT:
The wavelength becomes shorter as the engine rpm increases.

(g) WAVEFORM 7
(1) Purge VSV for EVAP system operation signal

HINT:
If the waveform is not similar to that shown in the illustration, check the waveform again after idling for 10 minutes or more.
(h) WAVEFORM 8
(1) Vehicle speed signal

HINT:
(i) WAVEFORM 9
(1) Throttle drive motor operation signal (positive
terminal) 
HINT:
The duty ratio varies depending on the throttle actuator operation.

(j) WAVEFORM 10
(1) Throttle drive motor operation signal (negative
terminal) 

(k) WAVEFORM 11
1) Engine speed signal

HINT:
The wavelength becomes shorter as the engine rpm increases.
Problem symptoms table
Diagnosis systemShort to GND in Side Squib RH Circuit
DTC B0112/41 Short to GND in Side Squib RH Circuit
DESCRIPTION
The side squib RH circuit consists of the center airbag sensor assembly and
the front seat side airbag
assembly RH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0112/41 is recorded when a sh ...
Reassembly
1. INSTALL SEAT POSITION AIRBAG SENSOR (for Driver Seat)
2. INSTALL LUMBAR SUPPORT ADJUSTER
ASSEMBLY LH
Install the seat side table leg cover.
3. INSTALL FRONT SEAT CUSHION SHIELD LOWER LH
Install the front seat cushion shield lower LH with
the screw.
4. INSTALL FRONT SEAT CU ...
On-vehicle inspection
1. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE INVOLVED IN COLLISION)
Perform a diagnostic system check.
Even if the airbag was not deployed, check if there ...