Toyota RAV4 manuals

Toyota Sienna Service Manual: Terminals of ecm

Sfi system

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.

Sfi system

Sfi system

Sfi system

Sfi system

Sfi system

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

Sfi system

(a) WAVEFORM 1

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

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(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.

Sfi system

(c) WAVEFORM 3

(1) Fuel injector operation signal 

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(d) WAVEFORM 4

(1) Knock sensor signal

HINT:

Sfi system

(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.

Sfi system

(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.

Sfi system

(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.

Sfi system

(h) WAVEFORM 8

(1) Vehicle speed signal

HINT:

Sfi system

(i) WAVEFORM 9

(1) Throttle drive motor operation signal (positive terminal)

HINT:

The duty ratio varies depending on the throttle actuator operation.

Sfi system

(j) WAVEFORM 10

(1) Throttle drive motor operation signal (negative terminal)

Sfi system

(k) WAVEFORM 11

1) Engine speed signal

HINT:

The wavelength becomes shorter as the engine rpm increases.

Problem symptoms table
HINT: When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority ...

Diagnosis system
DESCRIPTION (a) When troubleshooting OBD II (On-Board Diagnostics) vehicles, an intelligent tester (complying with SAE J1987) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. ...

Other materials:

VC Output Circuit
DESCRIPTION The ECM constantly uses 5 V from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit. When the VC circuit is short-circuited, the microprocessor in the ECM and sens ...

Installation
1. INSTALL REAR COIL SPRING INSULATOR UPPER LH (a) Install the insulator upper LH to the coil spring rear LH. 2. INSTALL COIL SPRING REAR LH (a) Apply a shop rug to the rear axle beam assembly. (b) Install the coil spring rear LH to the rear axle beam assembly. HINT: Fit the lowe ...

Removal
1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 seconds after disconnecting the cable to prevent the airbag working. 3. REMOVE FRONT SEAT ASSEMBLY (for Manual Seat) 4. REMOVE ...

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