Last Modified: 4-30-2014 6.6 G Doc ID: RM0000018SL001X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: AIR CONDITIONING: PRESSURE SWITCH: ON-VEHICLE INSPECTION; 2006 MY LX470 [05/2005 -        ]

ON-VEHICLE INSPECTION

1. SET VEHICLE IN THESE CONDITION

(a) Engine speed at 1,500 rpm

(b) Blower speed control switch at "HI" position

(c) Temperature control dial at "MAX. COOL" position

(d) Manifold gauge set setting.

2. CHECK PRESSURE SWITCH

(a) Disconnect the connector.

(b) Inspect the pressure switch continuity (magnetic clutch control).

(1) Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 1.

(2) Check the continuity between terminals when refrigerant pressure changes, as shown in the illustration.

If the continuity is not as specified, replace the pressure switch.