Subaru BRZ Electrical Manual — part 2

B

[A] : System Title

[B] : Indicates a Relay Block. No shading is used and

only the Relay Block No. is shown to distinguish it
from the J/B

Example: Indicates Relay Block No.1

[C] : ( ) is used to indicate different wiring and

connector, etc. when the vehicle model, engine
type, or specification is different.

[D] : Indicates related system.

[E] : Indicates the code for the (male and female)

connectors which are used to join two wire
harnesses. The connector code consists of two
alphabetical and one numerical characters.

Female

Male ( )

The first character of the connector code indicates
the alphabetical code allocated to the wire harness
which has the female connector, and the second
shows that of the wire harness which has the male
connector.
The third character indicates a serial number used
to distinguish between the wire harness
combinations in cases when more than one of the
same combination of wire harnesses exist
(e.g. CH1 and CH2).

Symbol ( ) indicates the male terminal connector.
Numbers outside connector codes indicate the pin
numbers of both male and female connectors.

[F] : Represents a part (all parts are shown in sky blue).

The code is the same as the code used in parts
position.

[G] : Junction Block (The number in the circle is the J/B

No. and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate
them from other parts.

3C indicates that
it is inside
Junction Block
No.3

Example:

[I]

: Indicates the wiring color.

Wire colors are indicated by an alphabetical code.

Copper wires

Aluminum wires

B

= Black

W = White

BR = Brown

L

= Blue

V

= Violet

SB = Sky Blue

R

= Red

G = Green

LG = Light Green

P

= Pink

Y

= Yellow

BE = Beige

GR = Gray

DG = Dark Gray

LA = Lavender

O = Orange

The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.

NOTICE:Do not splice into aluminum wires for power

sources or signals.

Example: L – Y

L

(Blue)

Y

(Yellow)

[H] : Indicates a shielded cable.

[J] : Indicates the pin number of the connector.

The numbering system is different for female and
male connectors.

Example: Numbered in order

from upper left to
lower right

Numbered in order
from upper right to
lower left

Female

Male

[K] : Indicates the ground point. The code consists of the

two characters: A letter and number.
The first character of the code indicates the
alphabetical code allocated to the wire harness.
The second character indicates a serial number
used to distinguish between the ground points in
cases when more than one ground point exist on the
same wire harness.

[L] : Page No.

[M] : Indicates the ignition key position(s) when the

power is supplied to the fuse(s).

BRZ (G4400GE)

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B HOW TO USE THIS MANUAL

[N] : Indicates a wiring Splice Point.

[O] : Wire Harness Code

Each wire harness is represented by a code.
Wire harness codes are used in the parts codes,
connector joining wire harness and wire harness
codes, and ground point codes. For example,
H7 (combination meter), CH1 (male, connector
joining wire harness and wire harness), and H2
(ground point) indicate that they are the parts
belonging to the same wire harness "H".

Example:

BRZ (G4400GE)

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B

[P] : Indicates reference pages showing the parts locations in the system circuit on the vehicle.

Example : Code ”H4” (Light Failure Sensor) is on page 36 of the manual.

* The first character of the code indicates the alphabetical code allocated to the wire harness, and the

second character indicates the serial number of the parts connected to the wire harness.

Serial number for the connected parts
Code for the wire harness

Example : H 4

[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.

Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrument

panel.

[R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.

Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this

manual, and is installed on the instrument panel left side.

[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring

harness is shown first, followed by the male wiring harness).

Example : Connector ”CH1” connects the Engine Room Main Wire (female) and Instrument Panel Wire (male).

It is described on page 42 of this manual, and is installed on the left side kick panel.

[T] : Indicates the reference page showing the position of the ground points on the vehicle.

Example : Ground point ”H2” is described on page 50 of this manual and is installed on the back panel center.

[P]

[Q]

[R]

[S]

[T]

: Parts Location

Code

See Page

Code

See Page

Code

See Page

H4

36

H7

36

H17

38

H6

36

H9

38

J7

38

: Relay Blocks

Code

See Page

Relay Blocks (Relay Block Location)

1

18

R/B No.1 (Instrument Panel Brace LH)

: Junction Block and Wire Harness Connector

Code

See Page

Junction Block and Wire Harness (Connector Location)

3C

22

Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)

IB

20

Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness

Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

CH1

42

Engine Room Main Wire and Instrument Panel Wire (Left Kick Panel)

HJ1

50

Instrument Panel Wire and Floor Wire (Right Kick Panel)

: Ground Points

Code

See Page

Ground Points Location

H1

50

Under the Left Center Pillar

H2

50

Back Panel Center

BRZ (G4400GE)

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B HOW TO USE THIS MANUAL

The ground points circuit diagram shows the connections from all major parts to the respective ground points. When

troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify

the problem ground quickly. The relationship between ground points (

A1

,

A2

and

D4

shown below) can also be

checked this way.

I GROUND POINT

B36

W – B

W – B

W – B

Junction

Connector

(Shielded)

(Shielded)

BR

W – B

W – B

A25

W – B

W – B

W – B

W – B

Junction

Connector

17

18

19

20

3

8

7

4

1

6

5

3

4

2

DLC3

A20

L5

A22

A8

A5

A23

A11

I9

A21

K5

A1

A10

C4

C2

(E)

(E)

(E)

(L)

(E1)

(E1)

(E01)

(E02)

(LH E)

(E)

(E)

(RH E)

(–S)

(E)

(E)

(E)

(E)

(E)

(SG)

D2

D63

D60

A6

Throttle Body
Assembly

D4

(5L–E)

Junction
Connector

(Shielded)

BR

BR

BR

LA1

3

DB1

12

7

CA1

5

HA1

KA1

3

IH2

HB4

9

12

D43

11

10

BR

BR

BR

BR

BR

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

A1

Clock Assembly

Side Turn Signal
Light Assembly LH

Front Wiper Deicer
(Windshield Glass)

Fog Light
Assembly RH

Fog Light
Assembly LH

ECM

Injector Driver
(Bank 1)

Headlight Assembly LH

Headlight Assembly RH

Outer Mirror
Switch Assembly

Windshield
Wiper Motor Assembly

Side Turn Signal Light
Assembly LH

Front Speed

Headlight RH

Cooling Fan
Motor No.2

Maltiplex Network
Master Switch Assembly

Headlight LH

H23

(E)

(E)

A24

(GND2)

(GND1)

(GND)

(GND)

B19

(Shielded)

(Shielded)

(Shielded)

(Shielded)

W – B

W – B

W – B

W – B

W – B

W – B

W – B

W – B

21

AB1

12

AB1

W – B

W – B

W – B

W – B

Skid Control ECU
Assembly

Brake Booster
Pump Assembly

6

AB1

A2

16

Sensor LH

*

The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

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