METER / GAUGE SYSTEM > ON-VEHICLE INSPECTION

for Preparation Click here



1. INSPECT SPEEDOMETER

  1. Check the operation.

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

      Indicator Type: km/h 
      Chassis Dynamometer Indication (km/h)
      		Acceptable Range (km/h)
      Data in ( ) is for Reference
      20
      		(21.0 to 25.0)
      40
      		41.7 to 46.2
      60
      		62.7 to 67.2
      80
      		83.4 to 88.4
      100
      		104.3 to 109.3
      120x
      		125.1 to 130.6
      140
      		145.8 to 151.8
      160
      		166.2 to 173.2
      180
      		186.9 to 194.5

      Indicator Type: mph 
      Chassis Dynamometer Indication (mph)
      		Acceptable Range (mph)
      20
      		21.0 to 23.5
      40
      		42.0 to 44.5
      60
      		62.5 to 66.0
      80
      		83.1 to 87.1
      100
      		103.9 to 108.4
      120
      		124.7 to 129.6

      NOTICE:
      Tire wear, over inflation, 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 the problem symptoms table (Click here).



2. INSPECT TACHOMETER

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

  1. Compare the test results with the tachometer indications.

    HINT:
    DC 13.5 V, at 25°C (77°F)


    Tune-up Tachometer Indication (rpm)
    		Acceptable Range (rpm)
    Data in ( ) is for Reference
    700
    		630 to 770
    1000
    		(900 to 1100)
    2000
    		(1850 to 2150)
    3000
    		2800 to 3200
    4000
    		(3800 to 4200)
    5000
    		4800 to 5200
    6000
    		(5750 to 6250)

    HINT:
    If the indication is not as specified, go to the Problem Symptoms Table (Click here).