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Home >> Cadillac >> 1983 >> Seville 4.1 8 >> Repair and Diagnosis >> Engine Performance >> System >> DFI Tests W/Codes >> Diagnosis & Testing

Diagnosis & Testing

The ECM stores component failure information for DFI system under a related trouble code which can be recalled for diagnosis and repair. When recalled, these codes will be displayed on Electrical Climate Control (ECC) panel starting with lowest numbered code. Only codes in which a related malfunction has occurred will be displayed. When system is displaying in diagnostic mode, Fuel Data Display panel will show no readings.

NOTE: The terms "enter diagnostics" and "exit diagnostics" will be used periodically throughout this section. Follow the procedure for entering diagnostic mode when instructed to "enter diagnostics". Follow the procedure for exiting diagnostic mode when instructed to "exit diagnostics".
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