Toyota RAV4 manuals

Toyota RAV4 Service Manual: Mil circuit

Description

The mil (malfunction indicator lamp) is used to indicate vehicle malfunction detections by the ecm.

When the ignition switch is turned on, power is supplied to the mil circuit, and the ecm provides the circuit ground which illuminates the mil.

The mil operation can be checked visually: when the ignition switch is first turned on, the mil should be illuminated and should then turn off. If the mil remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the intelligent tester.

Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

  1. Check that mil is illuminated

  1. Perform troubleshooting in accordance with the table below.



  1. Check whether mil turns off

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on and turn the tester on.
  3. Select the following menu items: diagnosis / enhanced obd ii / dtc info / current codes.
  4. Check if any dtcs have been stored. Note down any dtcs.
  5. Clear dtcs (see page es-35).
  6. Check if the mil goes off.

Standard: mil should go off.



  1. Check harness and connector (check for short in wire harness)

  1. Disconnect the a9 ecm connector.
  2. Turn the ignition switch on.
  3. Check that the mil is not illuminated.

Ok: mil is not illuminated.

  1. Reconnect the ecm connector.



  1. Check harness and connector (combination meter - ecm)

  1. Disconnect the a9 ecm connector.
  2. Disconnect the e19 combination meter connector.
  3. Measure the resistance.

Standard resistance (check for short)


  1. Reconnect the ecm connector.
  2. Reconnect the combination meter connector.




  1. Check that mil is illuminated

  1. Check if the mil is illuminated when the ignition switch is turned on.

Ok: mil should be illuminated.



  1. Check that engine starts

  1. Turn the ignition switch on.
  2. Start the engine.

Hint:

*: The intelligent tester cannot communicate with the ecm.



  1. Inspect combination meter assembly (mil circuit)

  1. Check the mil circuit (see page me-15).




Fuel pump control circuit
Description When the engine is cranked, the starter relay drive signal output from the star terminal of the ecm is input into the sta terminal of the ecm, and ne signal generated by the cranksha ...

Mass air flow meter
Components ...

Other materials:

Differential case
Components Disassembly Remove front differential ring gear Place the matchmarks on the ring gear and differential case. Remove the 14 bolts. Using a plastic-faced hammer, tap on the ring gear to remove it from the case. Remove front differential case ...

Installation
Install fan and generator v belt Using sst and 19 mm socket wrench, loosen the vribbed belt tensioner arm clockwise, then install the fan and generator v belt. Sst 09216-42010 Notice: Be sure to connect sst and the tools so that they are in line during use. When retracti ...

Using the “setup” menu (“bluetooth*” menu)
Registering a bluetooth® device in the system allows the system to function. The following functions can be used for registered devices: Functions and operation procedures Press the “setup” button and select “bluetooth*” using the “tune•scroll” knob. Press the knob and sele ...

© 2011-2020 Copyright www.trav4.net