Lexus IS250 · Service Manual HEATER & AIR CONDITIONING SYSTEM

INSPECTION

Inspection


INSPECT A/C COMPRESSOR

  1. E116585E01
    Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		 Condition
    		 Specified Condition
    E8-1 (MG+) - A-1
    		 Always
    		 Below 1 Ω
    E8-1 (MG;) - Body ground
    		 Always
    		 10 kΩ or higher

    If the resistance is not as specified, replace the A/C compressor.


INSPECT MAGNETIC CLUTCH

  1. E113611E01
    Measure the resistance of the connector.

    Standard resistance:
    Tester Connection
    		 Condition
    		 Specified Condition
    A-1 - Body ground
    		 Always
    		 3.4 to 3.8 Ω

    If the resistance is not as specified, replace the magnetic clutch.

  1. When connector terminal A1 is connected to the positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch's operating sound can be heard, and 2) the magnetic clutch's hub and rotor lock.


INSPECT A/C COMPRESSOR (LOCK SENSOR)

  1. E118401E04
    Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		 Specified Condition
    E8-2 (SSR+) - E8-5 (SSR-)
    		 160 to 320 Ω

    If the resistance is not as specified, replace the A/C compressor.


INSPECT A/C COMPRESSOR (SOLENOID)

  1. E118401E05
    Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		 Condition
    		 Specified Condition
    E8-3 (SOL+) - E8-6 (SOL-)
    		 20°C (68°F)
    		 10 to 11 Ω

    If the resistance is not as specified, replace the A/C compressor.

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