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 systemRear Occupant Classification Sensor LH Circuit
Malfunction
DTC B1782 Rear Occupant Classification Sensor LH Circuit
Malfunction
DESCRIPTION
The rear occupant classification sensor LH circuit consists of the occupant
classification ECU and the rear
occupant classification sensor LH.
DTC B1782 is recorded when a malfunction is detected in the rear oc ...
Occupant Classification Sensor Power Supply
Circuit Malfunction
DTC B1793 Occupant Classification Sensor Power Supply
Circuit Malfunction
DESCRIPTION
The occupant classification sensor power supply circuit consists of the
occupant classification ECU and
the occupant classification sensors.
DTC B1793 is recorded when a malfunction is detected in the occu ...
Installation
1. INSTALL REAR NO. 2 SEAT ASSEMBLY RH
Place the rear No. 2 seat assembly RH in the cabin.
NOTICE:
Be careful not to damage the body.
Install the seat with the bolt.
Torque: 29 N*m (296 kgf*cm, 21 ft.*lbf)
Install the locus cable RH with the bolt.
Torque: 29 N*m ( ...