VIN Range: M45255->N52206
Speed Control - VIN Range: M45255->N52206
Speed Control - VIN Range: M45255->N52206:
System Operation
The speed control system is inoperative below 27 mile/h (43 kph) and inoperative above the following speeds:
- 120 mile/h (193 km) for vehicles fitted with 2.5L/3.0L engine and automatic transmission.
- 125 mile/h (201 km) for all other variants.
The speed control system is designed to maintain a selected vehicle speed between these two parameters.
Any of the switches operated by the brake or clutch pedal (vehicles fitted with manual transmission) will interrupt the speed control operation by switching the signal to the engine control module (ECM). This will allow the system to go into STANDBY mode. Pressing the RESUME switch with the vehicle travelling above 27 mile/h (43 kph) while the system is STANDBY mode will allow the vehicle to accelerate until the last set speed is resumed.
Speed Control Switch - Vehicles Without Adaptive Speed Control
RESUME Switch
When the RESUME switch is pressed with the vehicle travelling above 27 mile/h (43 kph) with the system in STANDBY mode, allows the vehicle to accelerate until the last set speed is resumed. The RESUME switch will not function if the ignition switch has been cycled or if the vehicle speed is below 27 mile/h (43 kph).
CANCEL Switch
When the CANCEL switch is pressed with the vehicle travelling above 27 mile/h (43 kph) the system will enter STANDBY mode.
SET Switch
When the SET +/- switch is pressed with the vehicle travelling above 27 mile/h (43 kph) the system allows the vehicle speed to be maintained to ± 1 mile/h (1.62 kph). Pressing the SET +/- switch will increase or decrease the vehicle speed respectively until the switch is released. If the respective switch is pressed momentarily, the speed will accelerate or decelerate in 1 mile/h increments.
Brake Pedal Position (BPP) Switch
If the brake pedal is activated while the speed control system is active, the ECM receives a signal from the brake pedal position switch. This will cancel speed control and allow the throttle blade to return to the position as demanded by the accelerator pedal.
Speed Control Deactivation Switch (brake).
If the brake pedal is activated while the speed control system is active, the ECM receives a signal from the speed control deactivator switch. This will cancel speed control and allow the throttle blade to return to the position as demanded by the accelerator pedal.
Speed Control Deactivation Switch (clutch)
If the clutch pedal is activated while the speed control system is active, the ECM receives a signal from the clutch pedal position switch. This will cancel speed control and allow the throttle blade to return to the position as demanded by the accelerator pedal.
Adaptive Speed Control
On vehicles for certain markets, an adaptive speed control system is installed as an option. In addition to the normal vehicle speed control functions, this system enables a preset distance to be maintained behind a moving vehicle immediately ahead, without driver intervention.
Automatic Switch Off - Vehicles with Adaptive Speed Control
The adaptive speed control will disengage, but not clear the memory when:
- the CANCEL button is activated.
- the brake pedal is applied.
- the vehicle speed falls below 26 Km/h (16 mph).
- neutral, park or reverse gear positions are selected.
- traction control is activated.
The adaptive speed control will disengage, and clear the memory when:
- the ignition switch is set to position '0'.
- maximum vehicle speed is reached.
- the parkbrake is applied.
- a fault occurs in the adaptive speed control system.
Forward Alert Switch - Vehicles with Adaptive Speed Control
Forward Alert
The forward alert system is switched on and off by the forward alert switch. The forward alert system additionally provides warnings while the adaptive speed control is not activated.
Speed Control Module
The adaptive speed control module incorporates a radar sensor and yaw rate sensor to provide system control functions.
Adaptive Speed Control Failure
If a fault occurs during any adaptive speed control operation the adaptive speed control system will be deactivated and will remain in this state until the fault is rectified. The message center will display 'CRUISE NOT AVAILABLE'.