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.
Hint:
*: The ecm terminal voltage is constant regardless of the output voltage from the sensor.
Waveform 1
Camshaft
timing oil control valve (ocv)
Heated oxygen
sensor
Hint:
In data list, item o2s b1 s2 shows the ecm input values from the heated oxygen sensor.
Injector no.
1 (To no. 4) Injection signal
Hint:
The wavelength becomes shorter as the engine rpm increases.
Knock sensor
Hint:
Crankshaft
position sensor and camshaft position
sensor
Hint:
The wavelength becomes shorter as the engine rpm increases.
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.
Purge vsv
Hint:
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
Vehicle speed
signal
Hint:
The wavelength becomes shorter as the vehicle speed increases.
Throttle
actuator positive terminal
Hint:
The duty ratio varies depending on the throttle actuator operation.
Throttle
actuator negative terminal
Hint:
The duty ratio varies depending on the throttle actuator operation.
Engine speed
signal
Hint:
The wavelength becomes shorter as the engine rpm increases.
Can
communication signal
Hint:
The waveform varies depending on the can communication signal.
Can
communication signal
Hint:
The waveform varies depending on the can communication signal.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Identification information
Vehicle identification and serial numbers
Vehicle identification number
The vehicle identification number is stamped on the
vehicle identification number plate and on the
certification label, as shown in the illustrations.
Vehicle identification number plate
Certification label ...
Symptom confirmation and diagnostic trouble code
Hint:
The diagnostic system in the rav4 has various
functions.
The first function is the diagnostic trouble code
(dtc) check. A dtc is a code stored in the ecu
memory whenever a malfunction in the signal circuits
to the ecu occurs. In a dtc check, a previous
malfunction's dtc can be ch ...
Wireless remote
control/electronic
key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Flathead screwdriver
Small flathead screwdriver
Lithium battery cr2016 (vehicles without a smart key system), or
cr2032 (vehicles with a smart key system)
Replacing the battery
Vehicles without a ...