Discovery electrical Manual — part 20
CRUISE CONTROL
B5
CIRCUIT OPERATION
2
$ !
! &!$% & " !'&"'& %
%&$' & '%&$ &$!' & )$ %
% % "'% (!& &%
% )& ( %"
The Cruise Control System can be disabled in one of
four ways:
1.
$'% ! &$! )& % "'& &
"!%&! $!( "!)$
! &$! ('' "'"
$% & %& %" !$*
2. The RES/DECEL Switch is depressed, signalling
the Cruise Control ECU (Z121) to disengage the
system.
3. The brake pedal is depressed, and a vacuum
valve in the Brake Switch Vent Valve opens
(X112). This vents vacuum to the actuator valve
and releases the throttle.
4. The Voltage applied to Cruise Control ECU
(Z121) terminal 9 is interrupted, causing the
Cruise Control ECU (Z121) to turn off the
vacuum pump and de–energise the vacuum
solenoid valve. This voltage path is interrupted
when the brake pedal is depressed, the Clutch
Pedal is depressed, or the vehicle is in Park or
Neutral. With the brake pedal depressed, the
Brake Switch Vent Valve (X112) moves to 1 and
the circuit is interrupted. With the vehicle in Park
or Neutral, the Park/Neutral Position Switch
(X167) energises the Cruise Control Lockout
Relay (K110) by grounding the relay’s coil. The
relay then opens its contacts, interrupting the
circuit. With the clutch pedal depressed, the
Clutch Switch (X200) moves to 1 and the circuit
is interrupted.
NOTE: For 300 Tdi vehicles equipped with an EDC
Diesel engine, the Cruise Control System can also
be disabled by the Engine Control Module (ECM)
(Z132) when an engine fault has been detected.
CRUISE CONTROL
B5
CIRCUIT OPERATION
3
(& # %(& #"'%# & "#'
%#!!"
& $$%+ %#
#"&'"' &$
1. Start the engine and depress the Cruise Control
Switch (X115) to activate the Cruise Control
System. Accelerate to approximately 30 mph (50
km/h) and press the SET/ACCEL Switch.
Immediately release the switch and remove foot
from the accelerator pedal. The vehicle should
maintain the speed at which the SET/ACCEL
Switch was pressed.
2. Press the SET/ACCEL Switch and hold at that
position. The vehicle should accelerate smoothly
until the switch is released. The vehicle should
now maintain the new speed at which the
SET/ACCEL Switch was released.
3. Press the RES/DECEL Switch while the vehicle
is in the cruise control mode. The cruise control
should disengage. Slow to approximately 35 mph
(55 km/h) and press the RES/DECEL Switch.
Immediately release the switch and remove foot
from the accelerator. The vehicle should
smoothly accelerate to the previously set speed.
Increase speed using the accelerator pedal.
Releasing the pedal should return the vehicle to
the previously set speed.
4. Depressing the brake pedal should immediately
disengage the Cruise Control System and return
the vehicle to driver’s control at accelerator
pedal. Press the RES/DECEL Switch and the
vehicle should accelerate to the previously set
speed without operation of the accelerator pedal.
5. Press the RES/DECEL Switch and allow the
vehicle to decelerate to below 26 mph (42 km/h).
Press the RES/DECEL Switch and the Cruise
Control System should remain disengaged.
6. Press the SET/ACCEL Switch below 28 mph (45
km/h) and the Cruise Control System should
remain disengaged. Accelerate the vehicle
above 28 mph (45 km/h), press the RES/DECEL
Switch and remove foot from the accelerator
pedal. The vehicle should smoothly adjust to the
previously memorized speed.
7. Pressing the Cruise Control Switch (X115)
should immediately disengage the Cruise Control
System and erase the previously set speed from
ECU memory.
CRUISE CONTROL
B5
4
CIRCUIT DIAGRAM
15
F 14
10 A
15
C208
See Fuse Details
MALFUNCTION
INDICATOR
LAMP (CHECK
ENGINE)
2
C222
1
C222
RS
6
C217
Z142
Instrument
Cluster
P126
Fascia Fuse Box
X115
Cruise Control
Switch
1
C262
4
C262
5
WY
2
RN
0
[1]
Interior Lamps
S253
HJ8
E201
See Ground Dis-
tribution
B
A
B5-5
85
86
30
87a
K234
Cruise Control
Disable Relay
86
87a
C2107
GY
30
C2107
85
S2111
GLG
4
C243
Z132
Engine Control
Module (ECM)
S2103
RS
Warnings and
Indicators
2
C209
S2112
RS
15
F 18
10 A
18
C204
See Fuse Details
S274
HJ1
GLG
22
C217
300Tdi without
EDC
MFI–T16
MFI–V8
300Tdi with EDC
16
C215
GY
NAS
23
C217
23
C217
Except NAS
Except NAS
S214
HJ9
LG
GLG
GY
CRUISE CONTROL
B5
5
CIRCUIT DIAGRAM
S219
Z119
Rotary Coupler
4
C2036
3
C284
5
4
0
10
Z121
Cruise Control
ECU
X266
Steering Wheel
Cruise Switches
[1]
RES/DECEL
Depressed
[2]
SET/ACCEL
Depressed
RW
UW
Z119
Rotary Coupler
[1]
0
[2]
1
C2010
2
C2036
PB
4
C2010
3
GR
YB
W
GR
YB
A
B5-4
12
C209
WY
D
B5-11
C
B5-9
NAS
B
B5-8
Except NAS
Automatic
Transmission
Manual Trans-
mission
Manual Trans-
mission
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст