Check that the vehicle speed sensor buffer is correctly calibrated for the axle ratio and the tire size.

Is the condition resolved?

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System OK

Go to Step 2

1. Connect a scan tool in order to monitor the vehicle speed.
2. Drive the vehicle over a known distance:

•	Maintain a distance of 8 km (5 mi) or more.

•	Maintain a speed of 80-110 km/h (50-65 mph), if practical.

3. Using a scan tool, compare the indicated speed to the speedometer indication.
4. Record the following specifications:

•	The initial odometer reading

•	The final odometer reading

•	The actual distance driven

While at the specified speed, are the scan tool and the speedometer readings within 6 km/h (4 mph) of each other?

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Go to Step 3

Go to Step 4

Divide the actual distance driven by the distance driven as indicated by the odometer.

Is the indicated ratio within the specified range?

0.96-1.04

System OK

Go to Step 4

Replace the instrument panel cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

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System OK

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