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Home >> Suzuki >> 2006 >> Reno Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Performance - Diagnostic Information And Procedures, DTC Index >> Diagnostic Information and Procedures >> Primary System-Based Diagnostics >> Fuel Trim Cell Diagnostic Weights

Fuel Trim Cell Diagnostic Weights

No fuel trim DTC will set regardless of the fuel trim counts in cell 0 unless the fuel trim counts in the weighted cells are also outside specifications. This means that the vehicle could have a fuel trim problem which is causing a problem under certain conditions (i.e. engine idle high due to a small vacuum leak or rough due to a large vacuum leak) while it operates fine at other times. No fuel trim DTC would set (although an engine idle speed DTC or HO2S2 DTC may set). Use a scan tool to observe fuel trim counts while the problem is occurring.

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