On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BLOWER MOTOR CONTROL RELAY

Connect the connector to the blower motor control relay and inspect the wire harness side connector from the back side as shown in Fig 1 .

Test condition:

Turn ignition switch to ON

Fig 1: Identifying Blower Motor Control Relay Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard voltage

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 - Ground	Always	Below 1 V
2 - Ground	Blower speed control switch at "LO" position	Approx. 3.5 V
2 - Ground	Blower speed control switch at "M1" position	Approx. 2.2 V
3 - Ground	Operate blower motor	Battery positive voltage
3 - Ground	Blower speed control switch at "OFF" position	No voltage
4 - 5	Blower speed control switch at "LO" position	Approx. 3.6 V
	Blower speed control switch at "M2" position	Approx. 8.3 V
	Blower speed control switch at "HI" position	Approx. 13.0 V

If the result is not as specified, replace the relay.