DTC 71

DTC 71: Different Diameter Tire
1. Clear the DTC, and disconnect the HDS.
2. Turn the ignition switch OFF, then turn it ON (II) again.
3. Test-drive the vehicle.
Does the VSA indicator come on, and is DTC 71 indicated?
YES - Go to step 4.
NO - Intermittent failure; confirm that tire inflation is set to door jamb sticker specification. The vehicle is OK at this time.
4. Check that all four tires are the specified size and are inflated to the proper specification per door jamb sticker specification.
Are all four tires the correct size and properly inflated?
YES - Go to step 5.
NO - Install the correct tires or set the tires to the correct inflation and retest.
5. With the car on level ground, mark the front tires with a small spot of grease. Roll the car until each of the tires makes two grease spots on the floor.
6. Measure and record the distance between the two grease spots. Wipe up the grease spots, then repeat steps 5 and 6 with the rear tires.
Is the distance between the shortest and the longest measurement more than 10 %?
YES - Replace the tire/tires that is smaller or larger than the others.
NO - Replace the VSA modulator-control unit.