Opel Frontera UE. Manual - part 1643

8D–2

WIRING SYSTEM

Diagnosis

8D–138

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Rear Wiper/Washer

8D–143

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General Description

8D–143

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Circuit Diagram

8D–144

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Parts Location

8D–146

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Diagnosis

8D–147

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Rear Defogger/Mirror Defogger

8D–151

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General Description

8D–151

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Circuit Diagram

8D–152

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Parts Location

8D–154

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Diagnosis

8D–155

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Audio

8D–158

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General Description

8D–158

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Circuit Diagram

8D–159

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Parts Location

8D–161

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Cigarette Lighter, Digital Clock and
 Accessory Socket

8D–162

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General Description

8D–162

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Circuit Diagram

8D–163

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Parts Location

8D–164

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Diagnosis

8D–165

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Power Door Mirror

8D–166

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General Description

8D–166

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Circuit Diagram

8D–167

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Parts Location

8D–169

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Diagnosis

8D–170

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Keyless Entry

8D–172

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General Description

8D–172

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Circuit Diagram

8D–173

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Parts Location

8D–175

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Keyless Entry System

8D–176

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Meter and Warning/Indicator Light

8D–177

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General Description

8D–177

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Circuit Diagram 

8D–178

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Parts Location

8D–185

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Diagnosis

8D–186

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Heater and Air Conditioning (Manual)

8D–190

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General Description

8D–190

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Circuit Diagram

8D–191

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Parts Location

8D–193

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Heater and Air Conditioning (Automatic)

8D–194

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General Description

8D–194

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Circuit Diagram

8D–195

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Parts Location

8D–200

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Sunroof

8D–201

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General Description

8D–201

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Circuit Diagram

8D–202

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Parts Location

8D–203

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Diagnosis

8D–204

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Supplemental Restraint System (SRS)
 – Air Bag

8D–205

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General Description

8D–205

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Circuit Diagram

8D–206

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Parts Location

8D–207

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Shift on the Fly System

8D–208

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General Description

8D–208

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Circuit Diagram

8D–209

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Parts Location

8D–212

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T.O.D.

8D–213

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General Description

8D–213

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Circuit Diagram

8D–214

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Parts Location

8D–217

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Alarme and Relay Control Unit

8D–218

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Circuit Diagram

8D–218

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Parts Location

8D–221

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Intelligent Suspension

8D–222

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General Description

8D–222

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Circuit Diagram

8D–223

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Parts Location

8D–227

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Harness Connector Faces

8D–228

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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.

SECTION

8D–3

WIRING SYSTEM

General Description

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 harness 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.

061RW002

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.
Release the tang lock and carefully pull the two halves of
the connector apart.

D08RW128

Never pull on the wires to separate the connectors. This
will result in wire breakage as shown in the figure.

D08RW129

SECTION

8D–4

WIRING SYSTEM

When removing the connector for relay (MR5B type) (3),
unfasten the tang lock of the connector by using a
screwdriver, then pull the relay out as shown in the figure.

D08RW131

Connecting the Connector
Firmly grasp both sides (male and female) of the
connector. Be sure that the connector pins and pin holes
match, Be sure that both sides of the connector are
aligned with each other.
Firmly but carefully push the two sides of the connector
together until a distinct click is heard.

D08RW130

Connector Inspection
Use a circuit tester to check the connector for continuity.
Insert the test probes (1) from the connector wire side.

D08RW132

Never insert the circuit tester test probes (2) into the
connector open end to test the continuity.
Broken or open connector terminals will result.

D08RW133

SECTION

8D–5

WIRING SYSTEM

Waterproof Connector Inspection
It is not possible to insert the test probes (2) into the
connector wire side of a waterproof connector.
Use one side of a connector (1) with its wires cut to make
the test. Connect the test connector (3) to the connector
to be tested. Connect the test probes to the cut wires to
check the connector continuity.

D08RW134

Connector Pin Removal – Connector Housing Tang
Lock Type

1. Insert a slender shaft (1) into the connector housing

open end (5).

2. Push the tang lock (2) up (in the direction of the arrow

in the illustration).
Pull the wire (3) with pin (4) free from the wire side of
the connector.

D08RW135

Connector Pin Removal – Pin Tang Lock Type

1. Insert a slender shaft (1) into the connector housing

open end (5).

2. Push the tang lock (2) flat (toward the wire (3) side of

the connector.
Pull the wire with pin (4) free from the wire side of the
connector.

D08RW136

Connector Pin Insertion

1. Check that the tang lock (1) is fully up.
2. Insert the pin (3) from the connector wire (2) side.

Push the pin in until the tang lock closes firmly.

3. Gently pull on the wires to make sure that the

connector pin is firmly set in place.

D08RW137

SECTION