light ISUZU TF SERIES 2004 Owner's Manual

ELECTRICAL-BODY AND CHASSIS 8A-3
PAGE
Power Window ........................................................................................................... 8A- 310
Audio, Clock and Cigarette Lighter .......................................................................... 8A- 329
Power Door Mirror ...................................................................................................... 8A- 337
Rear Defogger ............................................................................................................ 8A- 349
SRS-Air Bag ................................................................................................................ 8A- 358
Transfer Case Control Module .................................................................................. 8A- 361
Anti-Lock Brake System ............................................................................................ 8A- 373
Immobilizer ................................................................................................................. 8A- 376
Keyless Entry ............................................................................................................. 8A- 385
Anti Theft ....................................................................................................................8A- 400
Auto Cruise ................................................................................................................. 8A- 412
Trailer Hitch ................................................................................................................ 8A- 415
Connector List ................................................................................................................8A- 418

8A-4 ELECTRICAL-BODY AND CHASSIS
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

ELECTRICAL-BODY AND CHASSIS 8A-5
NOTES FOR WORKING ON ELECTRICAL ITEMS
Battery

BATTERY CABLE
Disconnecting the Battery Cable
1. All switches should be "OFF" position.
2. Disconnect the battery ground cable.
3. Disconnect the battery positive cable.
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 to
connect the battery cables.
CAUTION:
Clean the battery terminal and apply light coat of grease to
prevent terminal corrosion.




CONNECTOR HANDLING
Disconnecting the Connectors
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.
Never pull on the wires to separate the connectors.
This will result in wire breakage.

ELECTRICAL-BODY AND CHASSIS 8A-11
SYMBOLS AND ABBREVIATIONS
SYMBOLS
Symbol Meaning of Symbol Symbol Meaning of Symbol


Fuse
Bulb



Fusible link
Double filament bulb



Fusible link wire
Motor


Switch
Variable resistor Rheostat


Switch
Coil (inductor), solenoid,
magnetic valve


Switch (Normal close type)





Contact wiring
Relay


Battery




Diode
Connector


Electronic Parts
Light emitting diode



Resistor
Reed switch


Speaker
Condenser



Buzzer
Horn


Circuit breaker
Vacuum switching valve

8A-12 ELECTRICAL-BODY AND CHASSIS
ABBREVIATIONS
Abbreviation Meaning of abbreviation Abbreviation Meaning of abbreviation
A Ampere (S) LH Left hand
ABS Anti-lock brake system LWB Long wheel base
ASM Assembly MPI Multipart fuel injection
AC Alternating current M/T Manual transmission
A/C Air conditioner QOS Quick On Start system
ACC Accessories RH Right hand
CARB Carburetor RR Rear
C/B Circuit breaker RWAL Rear wheel anti-lock brake system
CSD Cold start device SRS Supplemental restraint system
DIS Direct ignition system ST Start
EBCM Electronic brake control module STD Standard
ECGI Electronic control gasoline injection SW Switch
ECM Engine control module SWB Short wheel base
ECU Electronic control unit TCM Transmission control module
EFE Early fuel evaporation V Volt
42 Two-wheel drive VSV Vacuum switching valve
44 Four-wheel drive W Watt (S)
FL Fusible link WOT Wide open throttle
FRT Front W/ With
H/L Headlight W/O Without
IC Integrated circuit
IG Ignition
kW Kilowatt

ELECTRICAL-BODY AND CHASSIS 8A-13
PARTS FOR ELECTRICAL CIRCUIT


WIRING
Wire Color
All wires have color-coded insulation.
Wires belonging to system's main harness will have a single
color.
Wires belonging to a system's sub-circuits will have a colored
stripe.
Striped wires use the following code to show wire size and
colors.
Example: 0.5 G
/ R
Red (Stripe color)
Green (Base color)
Wire size (0.5mm
2)
Abbreviations are used to indicate wire color within a circuit
diagram.
Refer to the following table.


Wire Color-Coding
Color-Coding Meaning Color-Coding Meaning
B Black BR Brown
W White LG Light green
R Red GR Grey
G Green P Pink
Y Yellow LB Light blue
L Blue V Violet
O Orange

8A-14 ELECTRICAL-BODY AND CHASSIS
Distinction of Circuit by Wire Base Color
Base color Circuits Base color Circuits
B Starter circuit and grounding circuit Y Instrument circuit
W Charging circuit L, O, BR,
R Lighting circuit LG, GR, Other circuits
G Signal circuit P, LB, V




Wire Size
Wire size is specified with the metric gauge system.
The metric gauge system gives the wire size in cross sectional
area measured in square millimeters.


Wire Size Specifications
Normal size Cross sectional area
(mm2) Outside diameter
(mm) Allowable current
(A)
0.3 0.372 1.8 9
0.5 0.563 2.0 12
0.85 0.885 2.2 16
1.25 1.287 2.5 21
2 2.091 2.9 28
3 3.296 3.6 37.5
5 5.227 4.4 53
8 7.952 5.5 67
15 13.36 7.0 75
20 20.61 8.2 97

8A-20 ELECTRICAL-BODY AND CHASSIS

Caution:
Never push or tow the vehicle in an attempt to start it.
Extensive damage to the emission system and other
vehicle parts will result.
(Only catalytic converter vehicle)
Treat both the discharged battery and the booster battery
with great care when using jumper cables.
Carefully follow the procedure outlined below.
Always be aware of the dangers of sparking.
Failure to follow the following procedure can result in:
a. Serious personal injury, specially to your eyes.
b. Extensive property damage from a battery explosion,
battery acid discharge, or electrical file.
c. Extensive damage to the electronic components o
f
both vehicles.
Do not use a 24 volt booster battery.
Serious damage to the vehicle's electrical system and
electronic components will result.

Jump Starting Procedure
1. Set the parking brake on both vehicles.
2. If one or both vehicles is equipped with a manual
transmission, place the gear shift in the "NEUTRAL"
position.
3. Turn off the ignition on both vehicles.
4. Turn off all vehicle lights and accessories.
5 Be sure that the two vehicles are not touching.

Attach the end of one jumper cable to the booster battery
positive terminal.
6
Attach the other end of the same cable to the discharged
battery positive terminal.
7. Once again, check that the booster battery has a 12 vol
t
rating.
8.
Attach one end of the remaining booster cable to the
booster battery negative terminal.
9.
Attach the other end of the booster cable to a solid ground
(such as the air conditioner compressor mounting bracke
t
or the alternator mounting bracket) in the engine room o
f
the vehicle with the discharged battery.
Be sure that the ground connection is at least 500 mm (20
in) from the discharged battery.

8A-24 ELECTRICAL-BODY AND CHASSIS
MAIN DATA AND SPECIFICATIONS
BULB SPECIFICATIONS
This illustration based on LHD




RTW8AMF000501

Light Name Bulb No. Rated Power
V-W Number
of Bulbs Lens
Color Remarks
Headlight H4 12-60/55 2 White Halogen
High mounted stop light W5W 12-5 4 RED
Fog light H3 12-55 2 White
Front turn signal light PY21W 12-21 2 White Bulb Lens color
Amber
Clearance light W5W 12-5 2 White
Side turn signal light W5W 12-5 2 White with
amber
inner lens
Rear turn signal light PY21W 12-21 2 White Bulb Lens color
Amber
Rear fog light P21W 12-21 1 Red
Tail and stop light P21/5W 12-21/5 2 Red
Back up light P21W 12-21 2 White
License plate light W5W 12-5 2 White
A/C-Heater control light - 12-0.7 1 -
Dome light - 12-10 1 White
Spot light - 12-5 2 White

ELECTRICAL-BODY AND CHASSIS 8A-25
Light Name Rated Power
V-W Number of
Bulbs Lens
Color Remarks
W/O Tacho 5Illumination light 14-2
W/ Tacho 7White
Turn Signal 14-1.12 2 Green
High Beam 14-1.12 1 Blue
Low Fuel 14-1.12 1 Amber
A/T Oil Temp 14-1.12 1 Red
Brake system 14-1.12 1 Red
4WD 14-1.12 1 Green
Seat belt 14-1.12 1 Red
Oil pressure 14-1.12 1 Red
ABS 14-1.12 1 Amber
SEDIMENTER 14-1.12 1 Red
AIR BAG 14-1.12 1 Red
Brake 14-1.12 1 Red
Charge 14-1.12 1 Red
Check Trans 14-1.12 1 Red
Check 4WD 14-1.12 1 Red
Power drive 14-1.12 1 Amber
3rd start 14-1.12 1 Green
4L 14-1.12 1 Green
Cruise Set 14-1.12 1 Green
Check Engine 14-1.12 1 Amber
Front Fog 14-1.12 1 Green
Rear foglight 14-1. 12 1 Amber
Glow 14-1.12 1 Amber
P LED 1 Green
R LED 1 Green
N LED 1 Green
D LED 1 Green
3 LED 1 Green
2 LED 1 Green












Indicator/
Warning
light
A/T shift
indicator
L LED 1 Green