Speedometer Check

CAUTION:

Since the diagnostic trouble code may be stored in the ABS-ECU or ASC-ECU when checking the speedometer with speedometer tester, erase the diagnostic trouble code.
Do not accelerate or decelerate suddenly during servicing work.

Adjust the pressure of tires to the specified level (Refer to ON-VEHICLE SERVICE ).
Where applicable, ensure that the TPMS warning light is not illuminating or flashing.
< Vehicles with ASC > Press the ASC OFF switch for 3 seconds or more to stop the ASC operation.
CAUTION: Set a free-roller on the rear tire for AWD.
For FWD vehicles, set the vehicle onto a speedometer tester and use wheel chocks to hold the rear wheels.

Fig 1: Identifying Wheel Chocks On Rear Wheel
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
For AWD vehicles, set the vehicle onto a speedometer tester and place the rear wheels on a free roller.

Fig 2: Placing Rear Wheels On Free Roller
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
To prevent the wheel from moving from side to side, attach tension bars to the tie-down hook, and secure both ends to anchor plates.
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.

Check if the speedometer indicator range is within the standard values.

Fig 3: Identifying Puller And Anchor Plate

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Standard value < Except vehicles for CANADA >:

SPEEDOMETER INDICATOR RANGE (EXCEPT VEHICLES FOR CANADA)

Standard value < Vehicles for CANADA >:

SPEEDOMETER INDICATOR RANGE (VEHICLES FOR CANADA)

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 ABS or ASC and the combination meter. Check the following items.
- ABS or ASC (refer to DIAGNOSIS < ABS > or DIAGNOSIS < ASC >).
- Combination meter (refer to DIAGNOSTIC TROUBLE CODE CHART ).