Notes On Intermittents

To diagnose an intermittent resume/accel function, turn cruise control dash switch to "ON" position and backprobe ECM terminal B6 with a voltmeter to ground. Terminal B6 should show 12 volts with turn cruise dash switch to "ON" position and backprobe ECM terminal 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/Accel Input Schematic

Fig 2: Flow Chart, ECM Input Code EI81, Cruise Control Resume/Acceleration Input