Rover Land Discovery Specifications download pdf (Page 337)

100

101

CRUISE CONTROL

FAULT DIAGNOSIS

ROAD TEST

CAUTION: Do not engage cruise control

when vehicle is being used in low transfer

gear or reverse.

WARNING: The use of cruise control is not

recommended on winding, snow covered

or slippery roads or in heavy traffic

conditions where a constant speed cannot be

maintained.

1. Start engine, depress main control switch to

actuate cruise control system. Accelerate to

approximately 50 km/h, (30 mph), operate

’set/acc’ switch, immediately release switch,

remove foot from accelerator pedal. Vehicle

should maintain speed at which ’set/acc’ switch

was operated.

2. Operate ’set/acc’ switch and hold at that

position, vehicle should accelerate smoothly until

switch is released. Vehicle should now maintain

new speed at which ’set/acc’ switch was

released.

3. Momentarily touch and release ’set/acc’ switch,

vehicle speed should increase 1.6 km/h (1 mph)

for each touch. Note that five touches will

increase speed 8 km/h (5 mph).

4. Apply ’res/decel’ switch while vehicle is in cruise

control mode, cruise control should disengage.

Slow to approximately 55 km/h, (35 mph)

operate ’res/decel’ switch, immediately release

switch and remove foot from accelerator, vehicle

should smoothly accelerate to previously set

speed. Increase speed using accelerator pedal,

release pedal, vehicle should return to previously

set speed.

NOTE: The cruise control system fitted to

the diesel engine is not as responsive as

that fitted to the petrol engine, due to the

characteristics of diesel engines. Therefore, at

speeds below approx. 65 km/h (40 mph), the

vehicle speed may drop when cruise is selected

and then slowly regain the ’set’ speed.

5. Operate brake pedal, cruise control system

should immediately disengage returning vehicle

to driver control at accelerator pedal. Operate

’res/decel’ switch, vehicle should accelerate to

previously set speed without driver operation of

accelerator pedal.

6. Operate ’res/decel’ switch and allow vehicle to

decelerate to below 42 km/h, (26 mph). Operate

’res/decel’ switch, cruise control system should

remain disengaged.

7. Operate ’set/acc’ switch below 40 km/h, (28

mph), cruise control system should remain

disengaged. Accelerate, using accelerator pedal

to above 45 km/h, (28 mph), operate ’res/decel’

switch, and remove foot from accelerator pedal,

vehicle should smoothly adjust to previously

memorised speed.

8. Automatic vehicles - select neutral, system

should disengage. Manual vehicles - depress

clutch, system should disengage.

9. Cruise at 80 km/h (50 mph), declutch, select

neutral, remove foot from clutch. Operate

’res/decel’ switch. Engine should rev to 5000

rev/min, cruise control disengages, engine

returns to idle.

10. Engage forward gear. Operate ’res/decel’

switch. Remove foot from accelerator. Speed

should accelerate to previous set speed.

11. Depress main control switch in control system

should immediately disengage and erase

previously set speed from ECU memory.

See

Electrical Trouble Shooting Manual.

ELECTRICAL TESTS

Electrical functionality can be checked using

TestBook.

CABLE SETTING - TDi AUTOMATIC MODELS

1. An incorrectly adjusted kickdown cable can

prevent correct operation of the cruise control

system.

See AUTOMATIC GEARBOX,

Adjustment, kickdown cable adjustment.

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Rover Land Discovery Specifications Page 337

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Rover Land Discovery Specifications Page 337

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