Toyota RAV4 Service Manual: Terminals of ecm
- Check ecm
- Measure the voltage of the ecm connector.
Hint:
Each ecm terminal's standard voltage is shown in the table below.
In the table, first follow the information under "condition". Look under "symbols (terminal no.)" For the terminals to be inspected. The standard voltage between the terminals is shown under "specified condition".
Use the illustration above as a reference for the ecm terminals.
- 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) 
- Using an oscilloscope, check the waveform 5.
Waveform 5 (reference) 
- Using an oscilloscope, check the waveform 6.
Waveform 6 (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
When troubleshooting on-board diagnostic (obd
ii) vehicles, the vehicle must be connected to the
obd ii scan tool (complying with sae j1987).
Various data output from the ...
Other materials:
Diagnostic trouble code chart
If a dtc is displayed during the dtc check, check the circuit
listed for the dtc in the table below (refer to the appropriate
page).
Hint:
When the srs warning light remains on and the normal
system code is output, a decrease in the source voltage is
likely to occur. This malfunction is n ...
If the shift lever cannot
be shifted from p
If the shift lever cannot be shifted with your foot on the brake
pedal, there may be a problem with the shift lock system (a system
to prevent accidental operation of the shift lever). Have the
vehicle inspected by your toyota dealer immediately.
The following steps may be used as an emergency ...
Solar sensor circuit (driver side)
Description
The solar sensor, which is installed on the upper side of the instrument
panel, detects sunlight and
controls the air conditioning auto mode. The output voltage from the solar
sensor varies in accordance
with the amount of sunlight. When the sunlight increases, the output volt ...