Opel Frontera UBS. Service manual — part 643
8D–2
WIRING SYSTEM
General Description . . . . . . . . . . . . . . . . . .
8D–272
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–273
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–275
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–279
Anti–Lock Brake System (ABS) . . . . . . . . . .
8D–284
General Description . . . . . . . . . . . . . . . . . .
8D–284
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–285
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–291
A/T Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . .
8D–298
General Description . . . . . . . . . . . . . . . . . .
8D–298
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–299
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–300
Windshield Wiper/Washer . . . . . . . . . . . . . .
8D–303
General Description . . . . . . . . . . . . . . . . . .
8D–303
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–304
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–305
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–308
Rear Wiper/Washer . . . . . . . . . . . . . . . . . . . .
8D–316
General Description . . . . . . . . . . . . . . . . . .
8D–316
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–317
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–319
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–323
Headlight Wiper/Washer . . . . . . . . . . . . . . .
8D–329
General Description . . . . . . . . . . . . . . . . . .
8D–329
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–330
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–332
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–336
Rear Defogger . . . . . . . . . . . . . . . . . . . . . . . .
8D–342
General Description . . . . . . . . . . . . . . . . . .
8D–342
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–343
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–344
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–347
Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–350
General Description . . . . . . . . . . . . . . . . . .
8D–350
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–351
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–355
Cigarette Lighter and Digital Clock . . . . . . .
8D–359
General Description . . . . . . . . . . . . . . . . . .
8D–359
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–360
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–361
Power Door Mirror . . . . . . . . . . . . . . . . . . . .
8D–364
General Description . . . . . . . . . . . . . . . . . .
8D–364
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–365
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–368
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–373
Anti–Theft System with Keyless Entry . . . .
8D–380
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–381
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–392
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–399
Meter and Warning/Indicator Light . . . . . .
8D–410
General Description . . . . . . . . . . . . . . . . . .
8D–410
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–411
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–429
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–445
A/T Shift Indicator . . . . . . . . . . . . . . . . . . . . .
8D–464
General Description . . . . . . . . . . . . . . . . . .
8D–464
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–465
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–467
Heater and Air Conditioning . . . . . . . . . . . .
8D–471
General Description . . . . . . . . . . . . . . . . . .
8D–471
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–472
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–474
Sun Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–484
General Description . . . . . . . . . . . . . . . . . .
8D–484
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–485
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–486
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–489
Seat Heater . . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–493
General Description . . . . . . . . . . . . . . . . . .
8D–493
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–494
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–495
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–498
Power Seat . . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–500
General Description . . . . . . . . . . . . . . . . . .
8D–500
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–501
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–503
Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–507
Shift on the Fly System . . . . . . . . . . . . . . . .
8D–513
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–514
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–516
Torque on Demand (TOD) . . . . . . . . . . . . . .
8D–538
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–539
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–542
Supplemental Restraint System (SRS)–
AIR BAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8D–543
General Description . . . . . . . . . . . . . . . . . .
8D–543
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . .
8D–544
Parts Location . . . . . . . . . . . . . . . . . . . . . . .
8D–548
Connector List . . . . . . . . . . . . . . . . . . . . . . . .
8D–550
WIRING SYSTEM
8D–3
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fasteners joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fasteners.
When you install fasteners, use the correct
tightening sequence and specifications. Following
these instructions can help you avoid damage to
parts and systems.
8D–4
WIRING SYSTEM
The chassis electrical system is a 12–volt system with a
negative ground polarity.
Wire size are appropriate to respective circuits, and
classified by color. (The classification of harnesses by
color is shown on the circuit diagram for ease of harness
identification.)
The wire size is determined by load capacity and the
length of wire required.
The vehicle harnesses are: body harness, chassis
harness, engine room harness, instrument harness,
transmission harness, engine ECGI harness, dome light
harness, door harness, rear body harness, tailgate
harness, SRS harness and battery cables.
The harnesses are protected either by tape or corrugated
tube, depending on harness location.
The circuit for each system consists of the power source,
wire, fuse, relay, switch, load parts and ground, all of
which are shown on the circuit diagram.
In this section, each electrical device is classified by
system.
For major parts shown on the circuit based on the circuit
diagram for each system, a summary, diagnosis of
troubles and inspection procedures are detailed.
Notes for Working on Electrical
Items
Disconnecting the Battery Cable
1. All switches should be in the “OFF” position.
2. Disconnect the battery ground cable (2).
3. Disconnect the battery positive cable (1).
CAUTION: It is important that the battery ground
cable be disconnected first. Disconnecting the
battery positive cable first can result in a short circuit.
Connecting the Battery Cable
Follow the disconnecting procedure in the reverse order.
CAUTION: Clean the battery terminal and apply a
light coat of grease to prevent terminal corrosion.
Disconnecting the Connector
Some connectors have a tang lock to hold the connectors
together during vehicle operation.
Some tang locks are released by pulling them towards
you (1).
Other tang locks are released by pressing them forward
(2).
Determine which type of tang lock is on the connector
being handled.
Firmly grasp both sides (male and female) of the
connector (3).
Release the tang lock and carefully pull the two halves of
the connector apart.
Never pull on the wires to separate the connectors (4).
2
1
General Description
1
2
3
4
WIRING SYSTEM
8D–5
When removing the connector for relay (MR5B type) (5),
unfasten the tang lock of the connector by using a
screwdriver, then pull the relay out as shown in the figure.
Connecting the Connector
Firmly grasp both sides (male and female) of the
connectors. Be sure that both sides of the connectors are
aligned with each other.
Firmly but carefully push the two sides of the connectors
together until a distinct click is heard (2).
Do not connect them by force if they can not be connected
smoothly (1).
Connector Inspection
Use a circuit tester to check the connector for continuity.
Insert the test probes (1) from the connector wire side.
Never insert the circuit tester test probes (2) into the
connector open end to test the continuity.
Broken or open connector terminals will result.
5
1
2
1
2
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