Action Taken

WARNING: This page is about a different car, the 1990 Cadillac Fleetwood and 1990 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

Disengage cruise control.

When cruise control is on, system voltage is available at one normally open contact of the SET/COAST and RESUME/ACCEL switches. If the cruise control switch is in the ON position, this voltage is available to the switches when ignition switch is turned to the ON position. If SET/COAST or RESUME/ACCEL switches were stuck on or shorted to power, cruise control operation would begin. To prevent this, Code E67 will set and cruise control operation is disabled if signal voltage from SET/COAST (circuit No. 84) or RESUME/ACCEL (circuit No. 87) is HI continually for 10 minutes. Cruise control will be disengaged until ECM sees a LO on both of these signals.

NOTE: Test number refers to test number on diagnostic chart.

Test Number 1) Display will alternately display test code and 00, when ECM detects a change in state of switch.

Fig 1: Code E67: Circuit Diagram

Fig 2: Code E67: Flow Chart