Lexus IS250 · Service Manual BODY ELECTRICAL

INSPECTION

Inspection


INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

HINT:
This check should be performed with the front washer motor and pump installed to the washer jar.

  1. B108479E01
    Fill the washer jar with washer fluid.

  1. Connect the positive (+) battery lead to terminal 1 of the washer motor and pump, and the negative (-) lead to terminal 2.

  1. Check that washer fluid flows from the washer jar.

    OK:
    Washer fluid is pumped from the washer jar.


INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

HINT:
This check should be performed with the headlight cleaner motor and pump installed to the washer jar.

  1. B108480E01
    Fill the washer jar with washer fluid.

  1. Connect a positive (+) battery lead to terminal 1 of the headlight cleaner motor and pump, and a negative (-) lead to terminal 2.

  1. Check that washer fluid flows from the washer jar.

    OK:
    Washer fluid is pumped from the washer jar.


INSPECT HEADLIGHT CLEANER CONTROL RELAY

  1. B109905E03
    Inspect headlight cleaner control relay operation.

    1. Measure the resistance between terminals 4 (E) and 6 (PB).

    2. Connect the positive (+) battery lead to terminal 3 (IG) of the connector, and the negative (-) battery lead to terminal 4 (E).

    3. Connect the negative (-) battery lead to terminal 1 (HOLD) and 2 (H), and measure the resistance between terminals 4 (E) and 6 (PB).

      Standard resistance:
      Tester Connection
      		 Condition
      		 Specified Condition
      4 (E) - 6 (PB)
      		 Always
      		 10 kΩor higher
      4 (E) - 6 (PB)
      		 When apply the battery voltage
      		 Below 1 Ω
      4 (E) - 6 (PB)
      		 0.8 to 0.9 seconds after apply the battery voltage
      		 10 kΩ or higher

    4. Disconnect the negative (-) battery lead from terminal 1 (HOLD) and 2 (H).

    5. Disconnect the positive (+) battery lead from terminal 3 (IG), and then reconnect it.

    6. B109906E01
      Connect the negative (-) battery lead to terminals 1 (HOLD) and 5 (FRWA), and measure the resistance between terminals 4 (E) and 6 (PB).

      Standard resistance:
      Tester Connection
      		 Condition
      		 Specified Condition
      4 (E) - 6 (PB)
      		 When apply the battery voltage
      		 Below 1 Ω
      4 (E) - 6 (PB)
      		 0.8 to 0.9 seconds after apply the battery voltage
      		 10 kΩ or higher


INSPECT WASHER FLUID LEVEL SENSOR

HINT:
This check should be performed with the windshield washer motor and pump installed to the washer jar.

  1. Fill the washer jar with washer fluid.

  1. Disconnect the connector from the washer fluid level sensor.

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

    Standard resistance:
    Fluid Volume
    		 Specified Condition
    More than 70 to 900 ml
    		 10 kΩ or higher
    Less than 700 to 900 ml
    		 Below 1 Ω

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