Toyota RAV4 manuals

Toyota RAV4 Service Manual: Ecu malfunction

Toyota RAV4. 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.


  1. Reconfirm dtc

  1. 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. ...

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