Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1475
NOTICE
Before using this Workshop Manual to assist you in performing vehicle
service and maintenance operations, it is recommended that you
carefully read and thoroughly understand the information contained in
Section - OA under the headings “GENERAL REPAIR
INSTRUCTIONS” and “HOW TO USE THIS MANUAL”.
All material contained in this Manual is based on the latest product
information available at the time of publication.
All rights are reserved to make changes at any time without prior
notice.
ELECTRICAL-BODY AND CHASSIS 8-1
SECTION 8
ELECTRICAL-BODY AND CHASSIS
TABLE OF CONTENTS
PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-
3
Notes for Working on Electrical Items . . . . . . . . . . . . . . . . . ... 8-
4
Symbols and Abbreviations . . . . . . . . . . . . . . . . . . . . . . 8- 10
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 10
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 11
Parts for Electrical Circuit . . . . . . . . . . . . . . . . . . . . . . ... 8- 12
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 12
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 14
Fusible Link . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 14
Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 15
Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 15
Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 16
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 17
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 18
Reading the Circuit Diagram . . . . . . . . . . . . . . . . . . . . . ... 8- 21
Main Data and Specifications . . . . . . . . . . . . . . . . . . . . . . .. 8- 23
Bulb Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 23
Relay and Fuse Box Location . . . . . . . . . . . . . . . . . . . . . . 8- 25
Relay Location-1 (Relay and Fuse Box) . . . . . . . . . . . . . . . . . . 8- 29
Relay Location-2 (HEC Engine Model) . . . . . . . . . . . . . . . . . ... 8- 30
Relay Location-3 (4J Engine Model) . . . . . . . . . . . . . . . . . . ... 8- 31
Relay Location-4 (6VD1 Engine Model) . . . . . . . . . . . . . . . . . .. 8- 32
Fuse and Fusible Link Location (Relay and Fuse Box) . . . . . . . . . . . 8- 33
Fuse and Circuit Breaker Location (Fuse Box) . . . . . . . . . . . . . . . 8- 34
Diode Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 36
Fuse Block Circuit-1 . . . . . . . . . . . . . . . . . . . . . . . . . 8- 37
Fuse Block Circuit-2 . . . . . . . . . . . . . . . . . . . . . . . . . 8- 38
Fuse Block Circuit-3 . . . . . . . . . . . . . . . . . . . . . . . . . 8- 39
INDEX
8-2 ELECTRICAL-BODY AND CHASSIS
PAGE
Reference Table of Fuse, Fusible Link and Circuit Breaker . . . . . . . . . 8- 40
Grounding Point . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 43
Reference Table . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 43
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 45
Main Cable harness Routing . . . . . . . . . . . . . . . . . . . . . . ... 8- 48
System Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 60
Start and Charging . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 60
Engine Control Module (ECM) and Fuel Pump . . . . . . . . . . . . . . .. 8- 73
QOS/EGR/QWS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 87
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 93
Rear Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 128
HeadLight Leveling . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 132
Hazard Warning Flasher, Turn Signal Light, Back Up Light,
Horn and Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . 8- 136
Dome Light, Spot Light and Warning Buzzer . . . . . . . . . . . . . . . 8- 167
Windshield Wiper and Washer . . . . . . . . . . . . . . . . . . . . ... 8- 182
Overdrive Off (A/T) . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 202
Transmission Control Module (TCM) . . . . . . . . . . . . . . . . . . . 8- 205
Meter, Warning Light and Indicator Light . . . . . . . . . . . . . . . . .. 8- 208
Heater and Air Conditioning . . . . . . . . . . . . . . . . . . . . . ... 8- 264
Power Door Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 276
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 287
Audio, Clock and Cigarette Lighter . . . . . . . . . . . . . . . . . . . 8- 305
Power Door Mirror . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 313
Rear Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 325
Radiator Level Control Warning System . . . . . . . . . . . . . . . . ... 8- 334
SRS-Air Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8- 336
Seat Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 8- 340
Shift On the Fly . . . . . . . . . . . . . . . . . . . . . . . . . . . 8- 342
Connector List (HEC Engine Model) . . . . . . . . . . . . . . . . . . . ... 8- 350
Connector List (6VD1 Engine Model) . . . . . . . . . . . . . . . . . . . .. 8- 368
Connector (4J Engine Model) . . . . . . . . . . . . . . . . . . . . . . .. 8- 389
ELECTRICAL-BODY AND CHASSIS 8-3
GENERAL INFORMATION
The body and chassis electrical system operates on a twelve volt power supply with negative ground polarity.
The main harness consists of the engine harness, the instrument harness, the body harness, and the chassis
harness.
The harnesses use a split corrugated tube to protect the wires from the elements.
Wire size is determined by current flow, circuit length, and voltage drop.
All wires have color-coded insulation.
Wire color-codes are shown in the circuit diagrams.
This makes it easier to trace circuits and to make the proper connections.
Each circuit consists of the following:
1. Power source - The battery and the alternator
2. Wires - To carry electrical current through the circuit
3. Fuses - To protect the circuit against current overload
4. Relays - To protect voltage drop between the battery and the circuit parts and to protect the switch points against
burning
5. Switches - To open and close the circuit
6. Load - Any device, such as a light or motor, which converts the electrical current into useful work
7. Ground - To allow the current to flow back to the power source
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