Test description

The numbers below refer to the step numbers on the diagnostic table.

1. This step tests the cruise control set/coast switch signal circuit for an open or for a high resistance.
2. This step tests the cruise control resume/accel switch signal circuit for an open or for a high resistance.
3. This step tests the ignition 3 voltage circuit for an open, for a short to ground, or for a high resistance.
4. DTCs will set in the PCM when you perform this table.

Fig 1: Diagnostic System Check - Cruise Control Inoperative/Malfunctioning (1 Of 3)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnostic System Check - Cruise Control Inoperative/Malfunctioning (2 Of 3)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Diagnostic System Check - Cruise Control Inoperative/Malfunctioning (3 Of 3)

Courtesy of GENERAL MOTORS CORP.