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Home >> Isuzu >> 1998 >> Rodeo S 4WD V6-3.2L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Fuel Trim System Monitor Diagnostic Operation >> Circuit Description
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Circuit Description


The on-board diagnostic system check is the starting point for any driveability complaint diagnosis. Before using this procedure, perform a careful visual/physical check of the PCM and engine grounds for cleanliness and tightness.
The on-board diagnostic system check is an organized approach to identifying a problem created by an electronic engine control system malfunction.
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