Toyota RAV4 Quiz
Engine immobiliser

Unlock warning switch

In this manual: Engine immobiliser
Introduction — 37Interior — 12Exterior — 432Az-fe engine mechanical — 1552Az-fe ignition — 182Az-fe charging — 232Az-fe emission control — 82az-fe exhaust — 32Az-fe fuel — 72Az-fe lubrication — 4Brake — 17Brake control — 63U140f automatic transaxle — 59Instrument panel — 8Suspension — 18Drive shaft — 23Axle — 6Tire and wheel — 30Air conditioning — 93Lighting — 45Cruise control — 21Differential — 12Door lock — 31Engine immobiliser — 21Horn — 5Can communication — 27Mirror — 5Parking brake — 5Power steering — 27Propeller shaft — 3Seat — 29Seat belt — 27Sliding roof — 25Steering column — 6Wiper and washer — 11Supplemental restraint system — 95Other system — 5Maintenance — 14
7steps
~42min
2/5difficulty
Done 0 of 7
Toyota RAV4. Unlock warning switch

Inspection
  1. Inspect unlock warning switch assembly
  2. Measure the resistance of the switch.
Standard resistance

If the result is not as specified, replace the switch assembly.

Ecu power source circuit Description

This circuit provides power to operate the transponder key ecu.

Wiring diagram
Toyota RAV4. Ecu power source circuit

Inspection procedure
  1. Inspect fuse (ecu-b2)
  2. Remove the ecu-b2 fuse from the engine room no. 2 Relay block.
  3. Measure the resistance of the fuse.
Standard resistance: below 1


  1. Check wire harness (transponder key ecu - battery and body ground)
Toyota RAV4. Check wire harness (transponder key ecu - battery and body ground)

  1. Disconnect the e46 ecu connector.
  2. Measure the resistance and voltage of the wire harness side connector.
Standard resistance
Standard voltage


Proceed to next circuit inspection shown in problem symptoms table

Test yourself

A quick Toyota RAV4 quiz: every answer comes with an explanation and a link to the manual page.