Speedometer Check

WARNING: This page is about a different car, the 2004 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.

Adjust the pressure of tires to the specified level (Refer to TIRE INFLATION PRESSURE CHECK ).
CAUTION: 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: Setting Vehicle Onto Speedometer Tester
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: Checking Speedometer Indicator Range
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 3: Identifying Standard Value (Except Vehicles For Canada)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 4: Identifying Standard Value (Vehicles For Canada)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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, INSPECTION PROCEDURE 7: THE FUEL GAUGE NEEDLE MOVES EXCESSIVELY .)