Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Ecu power source circuit

Description

This is the power source for the tire pressure warning ecu.

Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

Notice:

It is necessary to register an id code after replacing the tire pressure monitor valve and/or the tire pressure warning ecu (see page tw-9).

  1. Inspect fuse (ecu-ig1)

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

Standard resistance: below 1




  1. Inspect ig1 relay

Toyota RAV4. Inspect ig1 relay


  1. Remove the ig1 relay from the instrument panel junction block.
  2. Measure the resistance of the relay.

Standard resistance




  1. Inspect wire harness (ecu - battery and body ground)

Toyota RAV4. Inspect wire harness (ecu - battery and body ground)


  1. Disconnect the e56 ecu connector.
  2. Measure the voltage of the wire harness side connector.

Standard voltage


  1. Measure the resistance of the wire harness side connector.

Standard resistance




Proceed to next circuit inspection shown in problem symptoms table

Tire pressure warning light circuit
Description If the tire pressure warning ecu detects trouble, the tire pressure warning light turns on and tire pressure monitor is canceled at the same time. At this time, the ecu records a dtc i ...

Tire pressure warning receiver (w/ antenna)
Components ...

Other materials:

Gauges and meters (with 12.3-inch multi-information display)
The meters display various drive information. Meter display â–  Locations of gauges and meters The meter type can be changed on of the multi-information display. Type 1/Type 2 The units of measure may differ depending on the intended destination of the vehicle. Multi-information display Presen ...

Emission inspection and maintenance (i/m) programs
Some states have vehicle emission inspection programs which include obd (on board diagnostics) checks. The obd system monitors the operation of the emission control system. If the malfunction indicator lamp comes on The obd system determines that a problem exists somewhere in the emission contr ...

AHB (Automatic High Beam)
The Automatic High Beam uses an in-vehicle front camera to assess the brightness of streetlights, the lights of vehicles ahead etc., and automatically turns the high beams on or off as necessary. WARNING â– Limitations of the Automatic High Beam Do not overly rely on the Automatic High Beam. Always ...

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