Code P067, Set/Coast Or Resume/ACCEL Switch Shorted: Action

WARNING: This page is about a different car, the 1995 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

PCM disengages cruise control.

NOTE: Test numbers refer to numbers on diagnostic chart.

Checks if PCM input data PI83 (SET/COAST) and PI84 (RESUME/ACCEL) will cycle from LO to HI to LO. If inputs remain high, a short to voltage in system is present.
Checks if SET/COAST and/or RESUME/ACCEL switches are shorted to voltage.
Checks if circuit No. 84 is shorted to voltage.
Checks if circuit No. 87 is shorted to voltage.

Fig 1: Code P067 Schematic, Set/Coast Or Resume/Accelerator Switch Shorted

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code P067 Diagnostic Flow Chart, Set/Coast Or Resume/Accelerator Switch Shorted

Courtesy of GENERAL MOTORS CORP.