Opel Frontera UBS. Service manual — part 1652
8D–286
WIRING SYSTEM
Anti-lock Brake System (ABS)
General Description
The circuit consists of EHCU (Electronic Hydraulic
Control Unit), wheel speed sensor, G–sensor,
stoplight switch or brake switch (w/cruise control),
backup light switch, transmission switch–1, 2,
indicator light and data link connector.
EHCU controls brake fluid pressure applied to front
and rear wheels to prevent wheels from locking by
using speed sensor and G–sensor signals.
Based on wheel speed signals from speed sensor,
EHCU activates solenoid valves incorporated into
the control unit to increase, maintain or decrease
brake fluid pressure.
Refer to Anti–lock Brake System in Brakes section.
WIRING SYSTEM
8D–287
Circuit Diagram (RHD)-1
D08RY00219
2.0
Y/G
2.0
W/G
3.0
W/G
0.5
LG
FL-6 40A
ABS
F-9 20A
ABS
INDICATOR
LIGHT(METER)
BRAKE
SW
STOP
LIGHT
SW
ELECTRONIC
HYDRAULIC
CONTROL UNIT
4WD CONTROL
UNIT(19)
14
C-4
13
C-4
3.0
B/Y
3.0
B/Y
0.85
L/W
0.5
L/W
0.5
L/W
2.0
B
C-4 15A
ELEC.IGN.
STARTER SW
(IG1)
STARTER SW
(IG1)
C-10 10A
METER,GAUGE
I-9
I-10
15
6
I-9
2
H-26
H-16
19
H-27
18
16
5.0
W
0.85
G/W
C-14 15A
STOP,A/T CONT.
BATT.(+)
BATT.(+)
STOP LIGHT
10
C-4
3
0.85
G/W
(W/CRUISE CONTROL)
0.85
G/W
0.85
G/Y
0.85
G/Y
0.85
G/Y
0.85
G/Y
B-13
1
B-13
4
B-14
H-13
1
B-14
2
G-
SENSOR
26
C-4
0.5
L/W
0.5
Y/B
0.5
Y/B
B-25
2
B-25
1
H-15
1
8
C-4
6
C-39
FENDER-RH
H-13
1
C-4
15
16
C-4
0.5
L/Y
0.5
L/Y
0.5
Y
0.5
Y
A
2.0
B
(DIESEL)
5
C-39
FENDER-RH
C-4
15
2.0
B
C-85
ENG.ROOM-FRT
C-4
GROUND
GROUND
GROUND
BATTERY
BATTERY
G-SENSOR
POWER
SUPPLY
SILA
BRAKE LIGHT
SWITCH
12
4WD
ABS
8D–288
WIRING SYSTEM
Circuit Diagram (RHD 6V*1)-2
0.5
GR
0.5
GR
0.5
O/G
0.5
O/B
0.5
O/W
0.5
O/G
0.5
O/B
0.5
L
0.5
G
0.5
W
0.5
B/L
0.5
R
0.5
W
0.5
B/L
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
R
0.5
O/W
0.85
G/W
0.5
P
0.5
B/L
0.5
B/L
1.25
B/L
1.0
B/L
ELECTRONIC
HYDRAULIC
CONTROL
UNIT
PCM
(A12)
(A/T)
SPEED
SENSOR
C-4
23
C-4
22
8
H-46
H-13
8
6
H-46
H-13
5
7
H-46
6
C-4
TMM
GND
RLS
GND
RRS
GND
FLS
GND
FRS
SDL2
DIAG
K
DIAG
L
TMM
TFM2
6
C-4
9
C-4
8
C-39
1
F-3
2
F-3
H-13
4
14
H-5
FENDER-RH
COMMON
CHAMBER
(W/O T.O.D.)
SPEED
SENSOR
C-4
3
C-4
2
11
H-46
H-13
14
12
H-46
6
H-33
4
H-33
5
H-33
2
H-33
3
H-33
1
F-2
2
F-2
H-13
13
C-4
2
C-63
E-30
5
C-63
4
C-63
H-42
3
C-4
7
C-63
H-42
9
C-4
12
C-63
H-42
1
25
24
17
16
C-63
H-7
9
SPEED
SENSOR
C-4
21
C-4
20
H-42
15
H-42
11
H-42
14
1
C-13
2
C-13
SPEED
SENSOR
FRT-RH
FRT-LH
RR-RH
RR-LH
DATA LINK CONNECTOR
C-4
5
C-4
4
1
C-41
2
C-41
A
4WD
CONTROL
UNIT(20)
B
C
C
0.5
P
TFM2
9
C-4
T.O.D.
CONTROL UNIT
9
H-15
0.5
LG/R
ABS
STATUS
27
C-4
T.O.D.
CONTROL UNIT
20
H-15
D08RW786
WIRING SYSTEM
8D–289
Circuit Diagram (RHD 4J**)-2
0.5
GR
0.5
O/B
0.5
O/W
0.5
O/B
0.5
L
0.5
G
0.5
W
0.5
B/L
0.5
R
0.5
W
0.5
B/L
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
O
0.5
O/L
0.5
W/L
0.5
W
0.5
R
0.5
O/W
0.85
G/W
0.5
B
0.5
B
ELECTRONIC
HYDRAULIC
CONTROL
UNIT
SPEED
SENSOR
C-4
23
C-4
22
6
H-33
4
H-33
5
H-33
8
H-46
6
H-46
7
H-46
11
H-42
15
H-42
14
H-42
6
C-4
TMM
GND
RLS
GND
RRS
GND
FLS
GND
FRS
DIAG
K
DIAG
L
1
F-3
2
F-3
7
C-16
FENDER-LH
SPEED
SENSOR
C-4
3
C-4
2
2
H-33
3
H-33
11
H-46
12
H-46
0.5
O
0.5
O/L
0.5
W/L
0.5
W
8
H-13
5
H-13
4
H-13
14
H-13
13
H-13
1
F-2
2
F-2
8
C-39
FENDER-RH
5
C-63
4
C-63
C-4
7
C-63
9
C-4
12
C-63
24
17
16
C-63
H-7
9
SPEED
SENSOR
C-4
21
C-4
20
1
C-13
2
C-13
SPEED
SENSOR
FRT-RH
FRT-LH
RR-RH
RR-LH
DATA LINK CONNECTOR
C-4
5
C-4
4
1
C-41
2
C-41
1
H-42
H-42
A
0.5
P
TFM2
9
C-4
4WD
CONTROL
UNIT
(20)
B
C
C
0.5
B
D08RW788
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