Toyota RAV4 Service Manual: Terminals of ecu
- Check transponder key amplifier
- Disconnect the e5 amplifier connector.
- Measure the resistance of the wire harness side connector.
If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the e5 amplifier connector.
- Measure the resistance and voltage of the connector.
If the result is not as specified, there may be a malfunction in the amplifier.
- Using an oscilloscope, check the waveform 1.
Waveform 1 (reference): 
- Using an oscilloscope, check the waveform 2.
Waveform 2 (reference): 
- Check transponder key ecu
- Disconnect the e46 ecu connector.
- Measure the resistance and voltage of the wire harness side connector.
If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the e46 ecu connector.
- Measure the resistance and voltage of the connector.
If the result is not as specified, there may be a malfunction in the ecu.
- Using an oscilloscope, check the waveform 1.
Waveform 1 (reference): 
- Using an oscilloscope, check the waveform 2.
Waveform 2 (reference): 
- Using an oscilloscope, check the waveform 3.
Waveform 3 (reference):
- Using an oscilloscope, check the waveform 4.
Waveform 4 (reference): 
- Check ecm
- Measure the resistance and voltage of the wire harness side connector.
If the result is not as specified, there may be a malfunction in the wire harness.
- Using an oscilloscope, check the waveform 1.
Waveform 1 (reference): 
- Using an oscilloscope, check the waveform 2.
Waveform 2 (reference): 
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 ...
Diagnosis system
Description
Engine immobiliser system data and diagnostic
trouble codes (dtcs) can be read through the
vehicle's data link connector 3 (dlc3). In some
cases, a malfunction may be occurr ...
Other materials:
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 the intelligent
tester. Performing the active test as the first step of
troubleshooting is one ...
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “owner’s warranty
information booklet” or “owner’s manual supplement/scheduled
maintenance guide”. It is recommended that any problem
you notice should be brought to the attentio ...
Lost communication with front satellite sensor bus rh
Description
The front airbag sensor rh consists of the diagnostic circuit and the frontal
deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration
sensor, it determines whether or
not the srs should be activated.
Dtc b1602/83, b1603/83, b1612/83 ...
