Lexus IS250 · Service Manual BODY ELECTRICAL

ON-VEHICLE INSPECTION

Inspection


INSPECT SPEEDOMETER

  1. Check the operation.

    1. Using a speedometer tester (calibrated chassis dynamometer), check the speedometer indication according to the table below.

      Reference: mph (for Europe, RHD) 
      Chassis dynamometer indication
      		 Acceptable range
      20 mph
      		 21.0 to 23.5 mph
      40 mph
      		 42.0 to 44.5 mph
      60 mph
      		 62.5 to 66.0 mph
      80 mph
      		 83.1 to 87.1 mph
      100 mph
      		 103.9 to 108.4 mph
      120 mph
      		 124.7 to 129.6 mph
      140 mph
      		 145.4 to 150.7 mph
      Reference: km/h (Except for Europe, RHD) 
      Chassis dynamometer indication
      		 Acceptable range
      Data in ( ) is for reference
      20 km/h
      		 21.0 to 25.0 km/h
      40 km/h
      		 41.7 to 46.2 km/h
      60 km/h
      		 62.7 to 67.2 km/h
      80 km/h
      		 83.4 to 88.4 km/h
      100 km/h
      		 104.3 to 109.3 km/h
      120 km/h
      		 125.1 to 130.6 km/h
      140 km/h
      		 145.8 to 151.8 km/h
      160 km/h
      		 166.2 to 173.2 km/h
      180 km/h
      		 188.9 to 194.5 km/h
      200 km/h
      		 207.7 to 215.7 km/h
      220 km/h
      		 228.4 to 236.8 km/h
      240 km/h
      		 249.2 to 258.0 km/h

      NOTICE:
      Tire wear as well as over or under inflation will cause errors.

    2. Check the deviation from the acceptable range of the speedometer indication.

      Reference:
      Less than 0.5 km/h (0.3 mph)

      HINT:
      If the indication is not as specified, go to problem symptoms table (Click here).


INSPECT TACHOMETER

  1. Connect a tune-up tachometer, and start the engine.

  1. Compare the test results with the tachometer indications.

    DC 13.5 V, at 25°C (77°F) 
    Chassis dynamometer indication (rpm)
    		 Acceptable range
    Data in ( ) is for reference
    700
    		 630 to 770
    1,000
    		 (900 to 1,100)
    2,000
    		 (1,850 to 2,150)
    3,000
    		 2,800 to 3,200
    4,000
    		 (3,800 to 4,200)
    5,000
    		 4,800 to 5,200
    6,000
    		 (5,750 to 6,250)
    7,000
    		 6,700 to 7,300
    8,000
    		 (7,700 to 8,300)

    HINT:
    If the indication is not as specified, go to the problem symptoms table (Click here).


INSPECT ENGINE OIL PRESSURE SWITCH

  1. Disconnect the connector from the engine oil pressure switch.

  1. Engine switch on (IG).

  1. Ground the terminal of the wire harness side connector, then check the low oil pressure warning light.

    OK:
    Oil pressure warning light comes on.

    HINT:
    If the warning message is not displayed, go to the problem symptoms table (Click here).


INSPECT ENGINE OIL LEVEL SENSOR

  1. Disconnect the engine oil level sensor connector.

  1. Engine switch on (IG), and check the multi-information display.

    OK:
    "LOW ENGINE OIL LEVEL" message is displayed.

    HINT:
    If the warning message is not displayed, go to the problem symptoms table (Click here).


INSPECT MULTI-INFORMATION DISPLAY

  1. E118877
    Engine switch off.

  1. Press the "DISP" button and hold it down.

  1. Engine switch on (IG).

    OK:
    All the dots in the multi-information display come on.

    HINT:
    This test is also available on "Data List / Active Test" (Click here).

  1. Engine switch off to finish this test mode.

    HINT:
    If the result is not as specified, replace the combination meter assembly.

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