Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 599

ENGINE ELECTRICAL 6D – 3

GENERAL DESCRIPTION

GENERATOR STARTER

MOTOR

The basic charging system is the IC integral regulator charging system. The internal components are connected
electrically as shown in charging circuit diagram.
The generator features a solid state regulator that is mounted inside the generator. All regulator components are
enclosed into a solid mold, and this unit along with the brush holder assembly is attached to the slip ring end frame.
The generator voltage setting cannot be adjusted.
The starter motor circuit is composed of a 4-pole 4-brush type direct current series motor, starter switch with safety
lock, etc. The starter motor circuit utilizes negative ground polarity.

6D – 4 ENGINE ELECTRICAL

CHARGING CIRCUIT DIAGRAM

STARTING CIRCUIT DIAGRAM

ENGINE ELECTRICAL 6D – 5

WIRE CODING

DESCRIPTION

Codes used in the circuit diagram represent wire size and
color

.

Example: 0.5 R

Wire

color

(Red)

Wire size (0.5 mm

2

)

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

Wire size

mm

2

AWG

Number of wires/

Wire diameter

mm (in.)

Resistance at normal room

temperature of 20

°C (68°F)

Ω/m (Ω/ft.)

Maximum allowable

current

A

0.5
0.85
1.25
2
3
5
8
15
20
30

20
18
16
14
12
10
8
6
4
2

7/0.32 (0.013)

11/0.32 (0.013)
16/0.32 (0.013)
26/0.32 (0.013)
41/0.32 (0.013)
65/0.32 (0.013)
50/0.45 (0.018)
84/0.45 (0.018)
41/0.80 (0.031)
70/0.80 (0.031)

0.03250 (0.00991)
0.02050 (0.00625)
0.01410 (0.00430)
0.00867 (0.00264)
0.00550 (0.00168)
0.00347 (0.00106)
0.00228 (0.00070)
0.00136 (0.00042)
0.00087 (0.00027)
0.00051 (0.00016)

11.3
14.8
18.8
25.4
34.2
45.9
59.8
82.8

110.9
147.0

6D – 6 ENGINE ELECTRICAL

WIRE COLOR

All wires have color-coded insulation.
Wires belonging to a 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

Wire size (0.5 mm

2

)

Green

(Base

color)

Red (Stripe color)

Abbreviations are used to indicate wire color within a
circuit diagram.
Refer to the following table.

WIRE COLOR-CODING

Color-coding Meaning

Circuits

B

Black

Starter circuit and grounding circuit

W White

Charging

circuit

R Red

Lighting

circuit

G Green

Signal

circuit

Y Yellow

Instrument

circuit

L Blue

Wiper

circuit

O Orange

Br Brown

Lg Light

green

Gy Grey

P Pink

Sb Sky

blue

V Violet

Other circuits