2007 Toyota Matrix Base, AutomaticFACTORY OEM SERVICE PROCEDURE

System Outline

The current is applied at all times through the RDI FAN fuse to TERMINAL 5 of the FAN No. 1 relay.

When the ignition SW is turned on, the current flows through the ECU-IG fuse to FAN No. 1 relay (Coil side) to TERMINAL CF of the engine control module. At the same time as this current flow, the current from ECU-IG fuse flows to the FAN No. 2 relay (Coil side) to TERMINAL 3 of the pressure SW.

  1. Low Speed Operation 

    When the A/C system is operating, the FAN No. 1 Relay is turned on. As a result, the current flows from the RDI FAN fuse to FAN No. 1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN No. 2 relay to TERMINAL 4 to TERMINAL 2 of the radiator fan resistor to TERMINAL 1 to GROUND, and the radiator fan motor rotates at low speed.

  2. High Speed Operation 

    When the pressure SW is on or engine control module operated, the FAN No. 1 and No. 2 relay is turned on. As a result, the current flows from the RDI FAN fuse to FAN No. 1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FAN No. 2 Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.