Blower Motor Control Relay: Inspection

WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE GLOVE COMPARTMENT DOOR
REMOVE BLOWER MOTOR CONTROL RELAY
1. Disconnect the connectors.
2. Remove the screw and blower motor control relay.
Fig 1: Removing Blower Motor Control Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT BLOWER MOTOR CONTROL CIRCUIT
Inspect the wire harness side connector from the back side, as shown in the chart.

Test conditions:
- Turn ignition switch to ON
- Operate blower motor (High blower speed)
  
  Fig 2: Checking Blower Motor Control Relay Circuits Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Identifying Blower Motor Control Relay Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If resistance is not as specified, replace the blower motor control relay.
INSTALL BLOWER MOTOR CONTROL RELAY
1. Install the blower motor control relay with the screw.
2. Connect the connectors.
INSTALL GLOVE COMPARTMENT DOOR
(See )

Fig 4: Installing Blower Motor Control Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002