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Home >> Cadillac >> 1988 >> Eldorado >> Repair and Diagnosis >> Engine Performance >> System >> DFI ECM Tests W/Codes >> ECM Input Data Code Tests >> ECM Input Code EI81 - Cruise Control Resume/ACCEL Input >> Notes on Intermittents
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Notes on Intermittents

To diagnose an intermittent resume/accel function, turn cruise control dash switch to "ON" position and backprobe ECM pin "B6" with a voltmeter to ground. Terminal "B6" should show 12 volts with turn cruise dash switch to "ON" position and backprobe ECM pin "B4" with a voltmeter to ground. Terminal "B6" should show 12 volts with "RESUME/ACCEL" switch depressed and zero volts with "RESUME/ACCEL" switch released. Cycle switch while manipulating wiring and connectors.

Fig 1: Input Code EI81, Cruise Control Resume/Acceleration Input
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Fig 2: Input Code EI81, Cruise Control Resume/Acceleration Input
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