Speedometer Check
SPEEDOMETER CHECKCAUTION:
- 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.
1. Adjust the pressure of tires to the specified level (Refer to On-vehicle Service). Testing and Inspection
2. Where applicable, ensure that the TPMS warning light is not illuminating or flashing.
3. Press the ASC OFF switch for 3 seconds or more to stop the ASC operation.
4. Set the vehicle onto a speedometer tester and place the rear wheels on a free roller.
5. 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.
6. 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.
7. Check if the speedometer indicator range is within the standard values.
8. 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 ASC and the combination meter. Check the following items.
- ASC (refer to Diagnosis). Diagnostic Trouble Code Descriptions
- Combination meter. Diagnostic Trouble Code Descriptions