Lexus NX: Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT FRONT WIPER DEICER RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the front wiper deicer relay.

2. INSPECT DEFOGGER RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 4

Auxiliary battery voltage is not applied between terminals 1 and 2

Below 1 Ω

Auxiliary battery voltage is applied between terminals 1 and 2

10 kΩ or higher

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

4 - 5

Always

10 kΩ or higher

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

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 Window Defogger System

 Parts Location

PARTS LOCATION ILLUSTRATION *1 AIR CONDITIONING CONTROL ASSEMBLY - REAR WINDOW DEFOGGER SWITCH *2 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-IG NO.1 FUSE - ECU-IG NO.3 FUSE *3 DLC3

 System Diagram

SYSTEM DIAGRAM Communication Table Transmitter Receiver Signal Communication Method Air Conditioning Control Assembly Air Conditioning Amplifier Assembly Rear window defogger switch

SEE MORE:

 Components

COMPONENTS ILLUSTRATION *1 COOLER EXPANSION VALVE *2 NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY *3 NO. 1 COOLER THERMISTOR *4 UPPER HEATER CASE *5 LOWER HEATER CASE *6 O-RING N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part Compressor oil ND-OIL

 Components

COMPONENTS ILLUSTRATION *1 MAP LIGHT ASSEMBLY (PERSONAL LIGHT) *2 MAP LIGHT SUB-ASSEMBLY

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