Opel Frontera UBS. 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