Toyota RAV4 manuals

Toyota Sienna Service Manual: Terminals of ECM

1. 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

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

SFI SYSTEM

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

SFI SYSTEM

  1. WAVEFORM 2
  1.  Heated oxygen sensor signal

SFI SYSTEM

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

SFI SYSTEM

  1.  WAVEFORM 3
  1.  Fuel injector operation signal

SFI SYSTEM

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

SFI SYSTEM

  1.  WAVEFORM 4
  1.  Knock sensor signal

SFI SYSTEM

HINT:

SFI SYSTEM

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

SFI SYSTEM

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

SFI SYSTEM

  1. WAVEFORM 6
  1.  Igniter IGT signal (from ECM to igniter) (1)
  2.  Igniter IGF signal (from igniter to ECM) (2)

SFI SYSTEM

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

SFI SYSTEM

  1.  WAVEFORM 7
  1.  Purge VSV for EVAP system operation signal

SFI SYSTEM

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

  1.  WAVEFORM 8
  1.  Vehicle speed signal

SFI SYSTEM

HINT:

SFI SYSTEM

  1.  WAVEFORM 9
  1.  Throttle drive motor operation signal (positive terminal)

SFI SYSTEM

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

SFI SYSTEM

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

SFI SYSTEM

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

SFI SYSTEM

  1.  WAVEFORM 11
  1. Engine speed signal

SFI SYSTEM

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
1. DESCRIPTION  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) o ...

Other materials:

Power Windows do not Operate at All
DESCRIPTION If all of the door windows do not operate, no power may be supplied to the power window master switch or the power window master switch itself may have a malfunction. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT FUSE (PWR, ECU-IG, AM1) Remove the fuses from the driver sid ...

Center Airbag Sensor Assembly Communication Circuit Malfunction
DTC B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction DESCRIPTION The center airbag sensor assembly communication circuit consists of the occupant classification ECU and the center airbag sensor assembly. DTC B1790 is recorded when a malfunction is detected in the center ...

On-vehicle inspection
1. INSPECT COOLING FAN SYSTEM (a) Put the vehicle in the following conditions (1) The engine switch is off. (2) The coolant temperature is less than 95°C (203°F). (3) The battery voltage is between 9 and 14 V. (4) The A/C switch is OFF. (b) Clamp the 400 A probe of an ammeter over the ...

© 2011-2018 Copyright www.tsienna.net