Wiring diagrams of the Toyota RAV4 engine management system

Notes:

Below are engine control wiring diagrams for a better understanding of the functionality and dependence of electrical circuits when repairing a Toyota RAV4 engine.

Scheme 1. Engine control system:

1  - fuse AM2-2 (7.5 A);

2  - fuse AM-2 (30 A);

3  - fuse AM 1 (7.5 A);

4  - fuse IG2 (15 A);

5 - IGN fuse (7.5 A);

6  - ignition switch (lock);

7  - selector lever switch;

8  - starter switch;

9  - electronic block of the body;

10, 11  - relay ST;

12  - switch;

13  - relay IG2;

14  - relay ST CUT.

Scheme 2. Engine control system:

1  - fuse EFI MAIN (20 A);

2  - IGN fuse (7.5 A);

3  - ETCS fuse (10 A):

4  - ignition coil of the 1st cylinder;

5  - ignition coil of the 2nd cylinder;

6  - ignition coil of the 3rd cylinder;

7  - ignition coil of the 4th cylinder;

8  - EFI MAIN relay;

9  - C/OPN relay;

10  - generator;

11  - fuse EFI N0.1;

12  - electronic engine control unit;

13  - fuel pump module;

14  - fuel injector of the 4th cylinder;

15  - fuel injector of the 3rd cylinder.

16  - fuel injector of the 2nd cylinder;

17  - fuel injector of the 1st cylinder:

18  - solenoid valve for adsorber purge;

19  - mass air flow sensor.

Scheme 3. Engine control system:

1  - accelerator pedal position sensor;

2  - transponder electronic unit;

3  - fuse WIP (25A);

4  - throttle assembly;

5  - camshaft position sensor;

6  - coolant temperature sensor;

7  - windshield wiper switch;

8  - electronic engine control unit;

9  - heated oxygen concentration sensor;

10  - intake air temperature sensor;

11  - crankshaft position sensor;

12  - valve of the variable valve timing system;

13  - knock sensor;

14  - battery charge current sensor.

Scheme 4. ​Engine management system:

1  - STOP fuse (10 A);

2  - IGN fuse (7.5 A);

3  - fuse GAUGE 2 (7.5 A);

4  - ECU-B fuse (10 A):

5, 6  - electronic control unit for automatic transmission;

7  - switch of the control lamp for turning on the parking brake;

8  - instrument cluster.

9  - electronic engine control unit;

10  - connecting block of the wiring harness.

Source: TOYOTA RAV4 Operation and Repair Manual since 2005 (Third Rome)