Notes On Intermittents

To diagnose intermittent set/coast function, turn cruise control dash switch to "ON" position and backprobe ECM terminal B4 with a voltmeter to ground. Terminal B4 should show 12 volts with "SET/COAST" switch depressed and zero volts with "SET/COAST" switch released. Cycle switch while manipulating wiring and connectors.

Fig 1: Input Code EI80, Cruise Control Set/Coast Input Schematic

Fig 2: Flow Chart, Input Code EI80, Cruise Control Set/Coast Input