Speed Control: Other Jaguar XKR I рестайлинг

Detection

As with most sensors, there are certain conditions under which detection issues can occur. The owner/driver's attention should be drawn to the driver's handbook to avoid misunderstandings as to what is, and isn't, a fault.

Detection issues may occur

1. When driving on a different line to the vehicle in front
2. When vehicles edge into your lane
3. When going into or coming out of a bend
4. With detecting motorcycles
5. With detecting stationary objects, such as traffic queues, broken down vehicles, etc

In circumstances such as these, the ACC system may brake late or unexpectedly, or may increase speed. This is not a fault , but is the system reacting to detection issues.

The owner's handbook makes it clear that the system should only be used under suitable conditions, but technicians should be wary of wasting time on complaints which are not actually faults.

Driver Information Chart

Note. Use this table to identify DTCs associated with the message center display, then refer to the DTC index for possible sources and actions.

Note. For definitions of Default Modes, see the foot of this table.

Default mode definitions

LIMP-HOME MODE

1. Throttle motor off
2. Throttle motor relay off
3. Throttle motor circuit off
4. Fuel intervention
5. Cruise control inhibited

LIMP-HOME UNAVAILABLE

1. Power limitation
2. Vehicle speed limited to 120 kph
3. Reverse throttle progression enabled
4. Cruise Control Inhibited

REVERSE THROTTLE PROGRESSION

1. Throttle opening limited to maximum 30%

Note. The throttle operation uses the same map as for reverse gear.

ENGINE SPEED LIMITED

1. Engine runs normally, up to 3000 RPM
2. Engine speed restricted to 3000 RPM maximum, by fuel cut-off

HIGH IDLE

1. Throttle valve kept in fixed position by motor
2. Cruise Control Inhibited

SAFETY REDUNDANCY

1. Power limitation
2. Vehicle speed limited to 120 kph
3. Reverse throttle progression enabled
4. Cruise Control Inhibited