Last Modified: 4-30-2014 6.6 G Doc ID: RM000001BCR001X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: AIR CONDITIONING: BLOWER MOTOR CONTROL RELAY: ON-VEHICLE INSPECTION; 2006 MY LX470 [05/2005 -        ]

ON-VEHICLE INSPECTION

1. CHECK BLOWER MOTOR CONTROL RELAY

(a) Connect the connector to the blower motor control relay and inspect the wire harness side connector from the backside as shown in the illustration.

Test condition:

  • Turn the ignition switch ON

    Standard voltage:

    Tester Connection

    Condition

    Specified Condition

    1 - Ground

    Always

    Below 1 V

    2 - Ground

    Blower speed control switch at "LO" position

    Approx. 3.5 V

    Blower speed control switch at "M1" position

    Approx. 2.2 V

    3 - Ground

    Operate blower motor

    Battery positive voltage

    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.