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Speedometer/Odometer Inoperative (Gasoline)

  1. Check function of Vehicle Speed Sensor (VSS) and Vehicle Control Module (VCM). See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If problem is resolved, system is operating properly, no further action is required. If problem is not resolved, go to next step.
  2. Disconnect instrument cluster harness connector. Disconnect VCM harness connector C4. Using an ohmmeter, check for continuity between instrument harness connector terminal B14 (Dark Green wire) and ground. If continuity does not exist, go to next step. If continuity exists, repair short to ground in Dark Green wire.
  3. Using an ohmmeter, check for continuity between instrument cluster harness connector terminal B14 (Dark Green wire) and VCM harness connector C4 terminal No. 4 (Dark Green wire). If continuity exists, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If continuity does not exist, repair open in Dark Green wire.
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