Aura V6-3.5L (2007)
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The brake pedal position (BPP) sensor
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The ON/OFF switch
The Cruise Control System will disengage when the brake pedal is applied. The body control module (BCM) monitors the BPP sensor via the BPP
sensor signal circuit as the voltage signal increases while the pedal reaches the fully applied position. The ECM monitors the BPP signal through a
discrete input and a GMLAN serial data message signal from the BCM indicating the brake status. When both signals indicate the brake pedal is applied,
the ECM will disengage the cruise control system. For further information on the BPP sensor, refer to Exterior Lighting Systems Description and
Operation or Brake Pedal Position Sensor Calibration.
The Cruise Control System will also disengage when the cruise control on/off switch is switched OFF. The vehicle speed stored in the memory of the
engine control module will be erased when the cruise control On/Off switch is turned OFF, or the ignition switch is turned OFF. The BCM sends a
GMLAN serial data message to the ECM in order to disengage the cruise control system. The Cruise Control System will disengage when the ECM
detects that a driver override function has been active for approximately 60 seconds. When the Cruise Control System has been disengaged, the ECM
sends a GMLAN serial message to the instrument panel cluster (IPC) in order to turn OFF the Cruise Engaged indicator.
Cruise Control Inhibited
The engine control module (ECM) inhibits the cruise control operation when any of the following conditions exist:
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• The ECM has not detected a brake pedal activation from the body control module (BCM).
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A cruise control system DTC has been set.
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The vehicle speed is less than 40.2 km/h (25 mph).
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The vehicle speed is too high.
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The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear.
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The engine RPM is too low.
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The engine RPM is too high.
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The system voltage is not between 9-16 volts.
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The antilock brake system/traction control system (TCS) is active for more than 2 seconds.