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Circuit Test (Galant)

  1. Disconnect Vehicle Speed Sensor (VSS) harness connector. Check VSS. See VEHICLE SPEED SENSOR (VSS) . Replace VSS as necessary. If sensor is okay, go to next step.
  2. Turn ignition on. Check voltage between ground and VSS harness-side connector terminal No. 1 (Black/Blue wire). See WIRING DIAGRAMS . Battery voltage should be present. If voltage reading is as specified, problem is intermittent. If voltage reading is not as specified, go to next step.
  3. Check VSS harness connector. Repair as necessary. If connector is okay, check circuit between VSS and ignition switch. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay, go to next step.
  4. Turn ignition on. Check voltage between ground and VSS harness-side connector terminal No. 3 (Yellow/Black wire). See WIRING DIAGRAMS . Voltage reading should be about 4.5 volts. If voltage is as specified, problem is intermittent. If voltage reading is not as specified, go to next step.
  5. Check circuit between VSS harness connector and instrument cluster meter connector. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay, go to next step.
  6. Turn ignition off. Check resistance between ground and VSS harness-side connector terminal No. 2 (Black wire). See WIRING DIAGRAMS . Continuity should be present. If continuity is present, problem is intermittent. If continuity is not present, check circuit between sensor harness-side connector terminal No. 2 and ground. Repair as necessary. If circuit is okay, go to next step.
  7. Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Check voltage between ground and instrument cluster harness-side connector terminal No. 1 (Red/Black wire). See WIRING DIAGRAMS . Battery voltage should be present. If battery voltage is present, go to step  9. If battery voltage is not present, go to next step.
  8. Check harness connector to instrument cluster. Repair as necessary. If connector is okay, check circuit between instrument cluster harness connector and battery. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay, go to next step.
  9. Check voltage between ground and instrument cluster harness-side connector terminal No. 29 (Black/White wire). See WIRING DIAGRAMS . Battery voltage should be present. If battery voltage is present, problem is intermittent. If battery voltage is not present, check harness connector. Repair as necessary.
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