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Home >> Mercury >> 1993 >> Topaz V6-182 3.0L >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Diagnostic Trouble Code Tests and Associated Procedures >> Manufacturer Code Charts >> DTC 53: Diagnostic Monitor Internal Fault

DTC 53: Diagnostic Monitor Internal Fault

Normal Operation
The diagnostic monitor performs several on-board diagnostics every time the ignition switch is turned on. It any of these tests fail, the diagnostic monitor will flash Diagnostic Trouble Code 53.

Possible Causes
Internal diagnostic monitor on-board diagnostic failure.

Pinpoint Test Steps:

53-1 - 53-2:







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