N: Mileage Constantly Reads Too High or Low

N1 CHECK SPEEDOMETER


^ Go to Conventional Instrument Cluster, Pinpoint Test E. E: Speedometer/Odometer Reads Erroneously, Aerostar


Does the speedometer check OK?

Yes

GO to N2.


No

REPLACE instrument cluster.



N2 CHECK ODOMETER MEMORY


^ Perform Pinpoint Test P. P: Odometer Does Not Accumulate Mileage, or Counts 1.6 km (1.0 Mile) and Jumps Back 1.6 km (1.0 Mile)


^ Does system check OK?


Yes


System OK.

No

GO to Pinpoint Test P. P: Odometer Does Not Accumulate Mileage, or Counts 1.6 km (1.0 Mile) and Jumps Back 1.6 km (1.0 Mile)