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Home >> Saturn >> 2007 >> Vue Red Line, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Speedometer and/or Odometer Inaccurate or Inoperative >> Circuit/System Description

Circuit/System Description

The instrument panel cluster (IPC) displays the vehicle speed based on the information from the engine control module (ECM)/powertrain control module (PCM). The ECM/PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The ECM/PCM sends the vehicle speed information via CAN serial data circuit to the body control module (BCM). The BCM then sends the information via class 2 serial data to the IPC to order to display the vehicle speed and miles traveled.

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