Speedometer Check

Adjust the pressure of tires to the specified level (Refer to ON-VEHICLE SERVICE ).
Press the ASC OFF switch for 3 seconds or more to stop the ASC operation. <Vehicles with TCL/ASC system>
CAUTION:
- Since the diagnosis code may be stored in the TCL/ASC-ECU when checking the speedometer with speedometer tester, erase the diagnosis code.
- Do not accelerate or decelerate suddenly during servicing work.
Set the vehicle onto a speedometer tester and use wheel chocks to hold the rear wheels.

Fig 1: Holding Rear Wheels Using Wheel Chocks
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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.
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.

Standard value <except vehicles for CANADA>:

Fig 2: Attaching Tension Bars To Tie-Down Hook And Securing Both Ends To Anchor Plates

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

SPEEDOMETER INDICATOR RANGE REFERENCE

Standard value <vehicles for CANADA>:

SPEEDOMETER INDICATOR RANGE REFERENCE

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.
- Output shaft speed sensor (refer to AUTOMATIC TRANSAXLE DIAGNOSIS ).
- Combination meter (refer to INSPECTION PROCEDURE 6: SPEEDOMETER DOES NOT WORK (OTHER METERS WORK) ; INSPECTION PROCEDURE 7: THE FUEL GAUGE NEEDLE MOVES EXCESSIVELY .