Toyota RAV4 manuals

Toyota RAV4 Service Manual: Terminals of ecm

Toyota RAV4. Terminals of ecm


Hint:

The standard normal voltage between each pair of ecm terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the specified condition column. The illustration above can be used as a reference to identify the ecm terminal locations.

Toyota RAV4. Terminals of ecm


Toyota RAV4. Terminals of ecm


Toyota RAV4. Terminals of ecm


Hint:

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

Waveform 1

Camshaft
timing oil control valve (ocv) 


  1. Waveform 2

Heated oxygen
sensor


Hint:

In data list, item o2s b1 s2 shows the ecm input values from the heated oxygen sensor.

  1. Waveform 3

Injector no.
1 (To no. 4) Injection signal


Hint:

The wavelength becomes shorter as the engine rpm increases.

  1. Waveform 4

Knock sensor


Hint:

  1. Waveform 5

Crankshaft
position sensor and camshaft position sensor 


Hint:

The wavelength becomes shorter as the engine rpm increases.

  1. Waveform 6

Igniter igt
signal (from ecm to igniter) and igniter igf signal (from igniter to ecm) 


Hint:

The wavelength becomes shorter as the engine rpm increases.

  1. Waveform 7

Purge vsv


Hint:

If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

  1. Waveform 8

Vehicle speed
signal


Hint:

The wavelength becomes shorter as the vehicle speed increases.

  1. Waveform 9

Throttle
actuator positive terminal


Hint:

The duty ratio varies depending on the throttle actuator operation.

  1. Waveform 10

Throttle
actuator negative terminal


Hint:

The duty ratio varies depending on the throttle actuator operation.

  1. Waveform 11

Engine speed
signal 


Hint:

The wavelength becomes shorter as the engine rpm increases.

  1. Waveform 12

Can
communication signal


Hint:

The waveform varies depending on the can communication signal.

  1. Waveform 13

Can
communication signal


Hint:

The waveform varies depending on the can communication signal.

  1. Waveform 14

Generator


Hint:

A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.

  1. Waveform 15

Generator


Hint:

A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.

  1. Waveform 16

Generator


Hint:

A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.

Problem symptoms table
Hint: Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "suspected area" column of th ...

Diagnosis system
Description When troubleshooting obd ii (on-board diagnostics) vehicles, the intelligent tester (complying with sae j1987) must be connected to the dlc3 (data link connector 3) of the vehicle ...

Other materials:

Cooling fan relay
On-vehicle inspection Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove engine room no. 2 Relay block cover Inspect ...

Precaution
Notice: Perform the reset memory procedures (a/t initialization) when replacing the automatic transaxle assembly, engine assembly or ecm (see page ax-18). Hint: Reset memory cannot be completed by only reconnecting the cable to the negative (-) battery terminal. Caution: When using compresse ...

Data list / active test
Read data list Hint: Using the intelligent tester's data list allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the data list early in troubleshooting is one way to save time. Connect the intelligent tester to the dlc3. Turn the igni ...

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