Toyota RAV4 Service Manual: Terminals of ecu
- Skid control ecu
Hint:
*1: W/ 16-inch disc
*2: W/ downhill assist control
*3: For 2wd (w/ auto lsd)
- Check skid control ecu
- Disconnect the a19 ecu connector.
- Measure the voltage and resistance of the wire harness side connector.
Hint:
The voltage cannot be measured with the connector connected to the skid control ecu as the connector is water resistant.
Hint:
*1: W/ 16-inch disc
*2: W/ downhill assist control
*3: For 2wd (w/ auto lsd)
If the result is not as specified, there may be a malfunction on the wire harness side.
- Check instrument panel junction block (main body ecu)
- Disconnect the id junction block connector.
- Measure the resistance 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 id junction block connector.
- Measure the voltage of the wire harness side connector.
If the result is not as specified, the junction block (ecu) may be a malfunction.
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
Diagnosis
If the skid control ecu detects a malfunction, the abs,
vsc and brake warning lights and the slip, downhill
assist control and auto lsd indicator lights come on in
accordance with t ...
Other materials:
Ts and cg terminal circuit
Description
If the vehicle is stationary during sensor check mode, speed sensor
malfunctions cannot be detected. The
vehicle must be driven for speed sensor malfunctions to be detected.
Hint:
Change to sensor check mode by connecting terminals tc and cg of the dlc3,
and turning the ignitio ...
Air-fuel ratio (a/f) and heated oxygen (ho2) sensor
heater monitors (front a/f and rear ho2 sensor type)
Preconditions
The monitor will not run unless:
The mil is off.
Drive pattern
Connect the intelligent tester to the dlc3.
Turn the ignition switch on.
Turn the tester on.
Clear dtcs (if set) (see page es-35).
Start the engine.
Allow the engine to idle for 10 minute ...
Oxygen (a/f) sensor signal stuck
Hint:
Although the dtc titles say oxygen sensor, these dtcs relate to the
air-fuel ratio (a/f) sensor.
Sensor 1 refers to the sensor mounted in front of the three-way
catalytic converter (twc) and
located near the engine assembly.
Description
The a/f sensor generates a voltage* ...
