DTC C1040-00: Different Diameter Tire is Detected

• No other DTCs detected

Operating Condition:

• 1.

  Start the engine.

• 2.

  Test-drive the vehicle at 13 mph (20 km/h) or more for 72 seconds or more. (Drive the vehicle on the road, not on a lift. Be careful of the surrounding traffic conditions.)

• 1 drive cycle
• Brake system indicator on (Dependent upon the conditions)
• ABS indicator on
• VSA indicator on

• Stop EBD function (Dependent upon the conditions)
• Stop ABS function
• Stop engine drag torque control function
• Stop TCS function
• Stop VSA function
• Stop brake assist function
• Stop hill start assist function

• Low air pressure in tires
• Damage or debris on the encoder surface
• Different diameter tires
• Wheel speed sensor failure
• VSA modulator-control unit program not the latest
• VSA modulator-control unit internal failure