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Home >> Isuzu >> 2007 >> Ascender RWD >> 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 (5.3L Engine) >> Circuit Description

Circuit Description

The instrument panel cluster (IPC) receives the vehicle speed information from the engine control module (ECM) through the vehicle speed signal circuit. The ECM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The ECM also sends a class 2 message to the IPC indicating the vehicle speed.

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