Suzuki Grand Vitara JB419. Service manual — part 173
Cruise Control System: 10A-1
Control Systems
Cruise Control System
General Description
Cruise Control System Construction
S5JB0BA101001
The cruise control system is a device which maintains a preset vehicle speed while driving at a high speed, e.g., on a
highway. It allows the driver to drive his vehicle at a constant speed of 40 km/h (25 mile/h) or higher without
depressing the accelerator pedal. The system also has such functions as to change the vehicle speed without
operating the accelerator pedal (but using SET/COAST and RES/ACC switches), cancel cruise control (CANCEL
switch) and resume the speed in memory automatically after cruise control is cancelled (RES/ACC switch). The
system mainly consists of fuel injectors, ECM, cruise control switch (MAIN switch, SET/COAST switch, RES/ACC
switch and CANCEL switch), etc.
10
10
9
11
12
13
3
5
8
6
7
4
1
2
9
13
I5JB0BA10001-01
1. Combination meter
6. MAIN switch
11. Brake light switch with brake pedal position switch
2. “CRUISE” indicator lamp
7. SET/COAST switch
12. Clutch pedal position switch (M/T vehicle only)
3. “SET” indicator lamp
8. CANCEL switch
13. ECM
4. Cruise control switch assembly
9. Wheel speed sensor (vehicle speed signal)
5. RES/ACC switch
10. Fuel injectors
10A-2 Cruise Control System:
Components and Functions of Cruise Control System
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Component
Function
ECM and fuel injectors
ECM executes centralized control over all functions including setting a constant speed,
resuming it, setting coast, cancelling cruise control limiting minimum speed.
ECM controls fuel injector to keep actual vehicle speed at set (target) speed.
MAIN switch
This switch has a momentary contact type button to press cruise control
system ON and OFF.
SET/COAST switch
When this switch is pressed (ON) and then released (OFF) while vehicle is running at
a speed 40 km/h (25 mile/h) or higher, vehicle speed at that OFF moment is stored in
memory and it is maintained (constant cruising).
Pressing this switch (ON) continuously during constant cruising keeps slowing down
vehicle speed as long as it is ON. When it is released (OFF), vehicle speed at that
moment is stored in memory and vehicle starts constant cruising.
RES/ACC switch
When this switch is pressed (ON) during constant cruising, vehicle speed keeps
increasing as long as it is ON. When it is released (OFF), vehicle speed at that
moment is stored in memory and vehicle starts constant cruising. If vehicle speed is
higher than 40 km/h (25 mile/h) after cruise control is cancelled, pressing this switch
ON momentarily will resume the speed at which vehicle was running before
cancellation.
CANCEL switch
When this switch is pressed (ON), cruise control is cancelled.
Wheel speed vehicle (sensor
speed signal)
ECM receives speed sensor signal from ABS or ESP
® control module through CAN
communication and calculates vehicle speed using that signal.
Brake light switch
Brake light switch has 2 contact points. One contact point closes when brake pedal is
depressed to light brake light and provides a voltage signal to the ECM.
The other contact point (brake pedal position switch) opens when brake pedal is
depressed, to shut off power to cruise control of ECM, thereby cancelling cruise
control.
This switch is installed to cancel cruise control (constant cruising).
Clutch pedal position switch
When clutch pedal is depressed, clutch pedal position switch closes and provides a
ground signal to ECM.
ECM cancels cruise control when this signal is inputted.
“CRUISE” indicator lamp
In the state with ignition switch ON and cruise control system OFF, pressing MAIN
switch once and releasing it will activate the cruise control system and ECM will cause
indicator lamp to light up.
“SET” indicator lamp
It lights up when cruise control is functioning.
Cruise Control System: 10A-3
Cancel Conditions of Cruise Control System
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Constant cruising is cancelled under the following conditions.
• *Ignition switch is turned OFF.
• MAIN switch is turned OFF.
• Vehicle speed becomes lower than minimum operating speed (40 km/h (25 mile/h)).
• *Vehicle speed varies beyond cancel speed range (–10 km/h (–6 mile/h)) from preset speed.
• *Brake pedal is depressed. (Brake light switch is turned ON).
• *Clutch pedal is depressed (Clutch pedal position switch is turned ON) (For M/T vehicle).
• *CANCEL switch is turned ON.
• *ESP
® is operating (if equipped).
NOTE
When constant cruising is cancelled under any condition with * (asterisk), vehicle speed before
cancellation can be resumed by operating RES/ACC switch, provided that vehicle speed is higher than
40 km/h (25 mile/h).
Schematic and Routing Diagram
Cruise Control System Input / Output Diagram
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Input
Output
MAIN switch
Cruise control switch
RES/ACC switch
SET/COAST switch
CANCEL switch
CPP switch
Stop (brake) lamp switch
Wheel speed sensor
ABS or ESP
control module
ECM
Fuel injector
Combination meter
(Indicator lamp control)
I5JB0BA10002-01
10A-4 Cruise Control System:
Cruise Control System Wiring Diagram
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IG1
+BB
WHT
RED
WHT/BLU
WHT/RED E66-32
E66-26
E66-4
WHT
RED
E91-22
E91-23
WHT
RED
G28-10
G28-8
WHT
ORN
G31-3
G31-1
E66-17
E66-23
C86-3
C86-14
E66-11
E66-2
E66-3
E66-5
E66-15
E66-21
E66-27
WHT/BLU
BLK/WHT
LT GRN
BLK/YEL
BLU/BLK
BLU/BLK
BLK/WHT
BLU/YEL
BLU/BLK
BLU/GRN
BLU/YEL
ORN/BLU
16
18
2
17
14
15
1
3
4
5
6
7
12
13
[A]
E66-20
E66-8
E66-7
E66-1
BLK
BLK
BLK
E03-12
E03-6
E03-8
E03-10
E53-13
E53-44
WHT/BLU
WHT/RED
E53-46
E53-42
WHT
RED
[B]
[C]
33
34
39
40
41
42
43
44
35
36
37
38
45
46
47
48
9
10
11
12
13
14
1
3
5
7
2
4
6
8
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
3
7
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
4
6
8
9
10
11
12
13
14
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
C85
C86
E66
BLU
BLK
9
E66-30
IG1
E66-28
YEL/GRN
BLU/BLK
GRN/WHT
GRN
8
10
C85-8
11
11
11
11
C85-32
PNK
C85-27
RED
C85-29
PNK/BLK
C85-25
RED/BLK
C85-30
PNK/GRN
C85-26
RED/GRN
C85-31
PNK/BLU
C85-28
RED/BLU
I5JB0BA10003-01
[A]: ECM connector (viewed from harness side)
5. RES/ACC switch
12. Main relay
[B]: Vehicle equipped with ESP
®
6. SET/COAST switch
13. Ignition switch
[C]: Vehicle not equipped with ESP
®
7. CANCEL switch
14. ABS control module
1. ECM
8. Stop (brake) lamp switch
15. ESP
® control module
2. Accelerator pedal position sensor
9. CPP switch
16. Combination meter
3. Cruise control switch assembly
10. Brake lamp
17. BCM
4. MAIN switch
11. Fuel injector
18. 4WD control module (if equipped)
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