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:

VIN not Programmed or Mismatch - ECM / PCM
DESCRIPTION DTC P0630 is set when the Vehicle Identification Number (VIN) is not stored in the Engine Control Module (ECM) or the input VIN is not accurate. Input the VIN with the intelligent tester. MONITOR STRATEGY TYPICAL ENABLING CONDITIONS TYPICAL MALFUNCTION THRESHOLDS ...

Active test
HINT: Performing an ACTIVE TEST enables components including the relays, VSV (Vacuum Switching Valve), and actuators, to be operated without removing any parts. The ACTIVE TEST can be performed with an intelligent tester. Performing an ACTIVE TEST in the first step in troubleshooting is one ...

Diagnosis system
1. CHECK DLC3  The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not ...

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