Toyota RAV4 Service Manual: Ecu malfunction
Description
Inspection procedure
If the power steering ecu detects these dtcs, it will shut off the motor
relay circuit (built into the power
steering ecu) and stop power assist. However, power assist continues if dtc
c1533 is output.
- Reconfirm dtc
- Check for dtc.
Ok: dtc is not output.
Replace power steering ecu
Motor rotation angle sensor malfunction
Description
The motor rotation angle sensor detects the motor rotation angle and sends
this information to the power
steering ecu.
Wiring diagram
Inspection procedure
Check conne ...
Ig power supply voltage malfunction
Description
The power steering ecu distinguishes the ignition switch status as on or off
through the ig power
source circuit.
Wiring diagram
Inspection procedure
Read value of inte ...
Other materials:
Ecm power source circuit
Description
When the ignition switch is turned on, the battery voltage is applied to the
igsw of the ecm. The output
signal from the mrel terminal of the ecm causes a current to flow to the coil,
closing the contacts of the
integration relay (efi main relay) and supplying power to either term ...
Front seat assembly (for power seat type lh side)
Components
...
How to proceed with troubleshooting
Hint:
Use the procedure to troubleshoot the power door lock
control system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
...