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Home >> Cadillac >> 1997 >> Catera V6-3.0L VIN R >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Rough Road Circuit
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Rough Road Circuit

The ECM pulls the rough road detection signal circuit up to 5 volts and monitors the circuit voltage. The ABS Controller pulls the circuit voltage down in proportion to the severity of the rough road detected. The ECM integrates the rough road data into the calculations used in order to detect the engine misfire.
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