Powertrain Control Module

Cruise control module sends a signal to the Powertrain Control Module (PCM) through cruise engaged output terminal when cruise control is engaged. The cruise control module cruise inhibit input terminal is a circuit used by the PCM to inhibit cruise control when conditions inconsistent with cruise operation are present. If the PCM determines that any of the cruise control inhibit conditions are present, the PCM requests that the cruise control module suspend cruise control operation. The PCM accomplishes this request by opening the cruise inhibit output circuit. If the cruise engage output signal, sent by the cruise control module to the PCM, indicates that the cruise control is still engaged after the PCM has requested that cruise control disengage, the PCM sets a DTC. The PCM will inhibit cruise control when:

• Engine is off.
• Automatic transaxle is in Park, Reverse, Neutral or 1st gear.
• Engine speed is too high/low.
• Vehicle speed is too high/low.
• PCM sets certain Diagnostic Trouble Codes (DTCs) or other failure records.
• ABS/traction control system is active for greater than 2 seconds.
• Undercharged or overcharged battery condition exists.