FixVault

Speedometer Check

CAUTION: Since the diagnostic trouble code may be stored in the ABS-ECU when checking the speedometer with speedometer tester, erase the diagnostic trouble code.
CAUTION: Do not accelerate or decelerate suddenly during servicing work.
  1. Adjust the pressure of tires to the specified level (Refer to ON-VEHICLE SERVICE ).
  2. Where applicable, ensure that the TPMS warning light is not illuminating or flashing.
  3. <Vehicles with TCL> Press the TCL switch to stop the TCL operation.
    CAUTION: Set a free-roller on the rear tire for AWD.
  4. For FWD vehicles, set the vehicle onto a speedometer tester and use wheel chocks to hold the rear wheels.
    Fig 1: Setting Vehicle Onto Speedometer Tester And Using Wheel Chocks To Hold Rear Wheels
    G06700513Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  5. For AWD vehicles, set the vehicle onto a speedometer tester and place the rear wheels on a free roller.
    Fig 2: Setting Vehicle Onto Speedometer Tester And Place Rear Wheels On Free Roller
    G06700514Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. To prevent the front wheel from moving from side to side, attach tension bars to the tie-down hook, and secure both ends to anchor plates.
  7. To prevent the vehicle from moving, attach a chain or wire to the rear retraction hook, and make sure the end of the chain or wire is secured.
  8. Check if the speedometer indicator range is within the standard values.
    Fig 3: Attaching Tension Bars To Tie-Down Hook, And Securing Both Ends To Anchor Plates
    G05106319Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Standard value: 

    STANDARD VALUE CHART

    STANDARD INDICATION mph (km/h) ALLOWANCE RANGE mph (km/h)
    10 (16) 10 ± 1.5 (16 ± 2.4)
    25 (40) 25 ± 1.5 (40 ± 2.4)
    50 (80) 50 ± 1.5 (80 ± 2.4)
    75 (120) 75 ± 1.5 (120 ± 2.4)
    100 (161) 98.5 - 102.5 (158.5 - 165.0)
  9. If not within the standard value, check the tire size. If an incorrect size of tire is used, replace it and check again. If the tire size is correct, a defect may be present in components and circuit between the output shaft speed sensor and the combination meter. Check the following items.