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Speedometer & Odometer Do Not Operate (Astro, Safari & "S" Series)

  1. Check for vehicle speed sensor signal. To do so, disconnect large 17-pin connector (34-pin connector on "S" series) from cluster and the Digital Ratio Adapter Controller (DRAC) connector.
  2. Measure resistance between wire at pin No. 1 ("A11" on "S" series) of cluster and wire at pin "B" of DRAC harness. If resistance is above zero (0) ohms, and the vehicle speed sensor circuit is working properly, replace inoperative instrument cluster.
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