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Home >> Mercury >> 1993 >> Sable V6-182 3.0L >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Instrument Panel >> Speedometer Module >> Testing and Inspection >> Component Tests and General Diagnostics
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Component Tests and General Diagnostics





Description
A Vehicle Speed Sensor (VSS) mounted on the transaxle sends pulses to the instrument cluster. The pulses also go to the powertrain control module and Variable Assist Power Steering (VAPS) module, if so equipped.

Quick Check
- Verify speedometer by road testing vehicle.
- If speedometer reads zero, high, or erratic, then road test speed control. Speed control is performed by the powertrain control module. If speed control does not work properly, concern is not the speedometer.
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