Toyota RAV4 manuals

Toyota RAV4 Service Manual: Eps warning light circuit

Description

If the power steering ecu detects a malfunction, the p/s warning light comes on. At this time, the power steering ecu stores a dtc in its memory.

Wiring diagram

Toyota RAV4. Eps warning light circuit


Inspection procedure

  1. Check for dtc

  1. Using the intelligent tester (with can vim), check for dtcs and confirm that there are no problems in the can communication system.

Ok: can dtcs are not output.


  1. Read value of intelligent tester (ig power supply)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on and press the intelligent tester main switch on.
  3. Select the item "ig supply" in the data list and read the value displayed on the intelligent tester.

Main body ecu




  1. Inspect fuse (ecu-ig1)

  1. Remove the ecu-ig1 fuse from the instrument panel junction block.
  2. Measure the resistance of the fuse.

Ok: below 1




  1. Check wire harness (battery - power steering ecu and body ground)

Toyota RAV4. Check wire harness (battery - power steering ecu and body ground)


  1. Disconnect the a1 and e18 power steering ecu connector.
  2. Measure the voltage of the wire harness side connectors.

Standard voltage



  1. Perform active test by intelligent tester

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on and press the intelligent tester main switch on.
  3. Operate the intelligent tester according to the steps on the display and select the active test.

Combination meter


Ok: indicator comes on.



Replace power steering ecu

Control module communication bus off
Description The power steering ecu receives signals from the ecm and the skid control ecu via the can communication system. Hint: When 2 or more dtcs starting with [u] are output simul ...

Steering gear
Components Removal Position front wheels facing straight ahead Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable f ...

Other materials:

Initialization
Zero point calibration Notice: Make sure that the front passenger seat is not occupied before performing the operation. Hint: Perform the zero point calibration and sensitivity check if any of the following conditions apply. The occupant classification ecu is replaced. Accessories ( ...

Basic inspection
When measuring resistance of electronic parts Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°c (68°f). Resistance measurements may be inaccurate if measured at high temperatures, i.E. Immediately after the vehicle has been r ...

Installation
Hint: Use the same procedures for the rh side and lh side. The procedures listed below are for the rh side. Install front seat assembly Place the seat in the cabin. Notice: Be careful not to damage the vehicle body. Connect the connector under the seat. Lift up the se ...

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