Nissan Primera P11. Instruction — part 452

CONNECTOR SYMBOLS

Most of connector symbols in wiring diagrams are shown from
the terminal side.

●

Connector symbols shown from the terminal side are
enclosed by a single line and followed by the direction mark

.

●

Connector symbols shown from the harness side are
enclosed by a double line and followed by the direction mark

.

●

Male and female terminals
Connector guides for male terminals are shown in black and
female terminals in white in wiring diagrams.

SGI364

Example
View from terminal side

Connector symbol

Single line

Direction mark

Connector

View from harness side

Connector symbol

Double line

Direction mark

Connector

SGI363

Example

Male terminal

Guide

Connector symbol

Connector

Female terminal

Guide

Connector symbol

Connector

HOW TO READ WIRING DIAGRAMS

Description (Cont’d)

GI-15

●

Connector numbers that indicate the harness side are
enclosed by a single line.

●

Connector numbers that indicate components are enclosed
by a double line.

SWITCH POSITIONS

Switches are shown in wiring diagrams as if the vehicle is in the
“normal” condition.
A vehicle is in the “normal” condition when:

●

ignition switch is in the “LOCK” position,

●

doors, hood and trunk lid/back door are closed,

●

pedals are not depressed, and

●

parking brake is released.

SGI940

Example:

Harness
indication

Single line

BCM connector

Component indication

A/C mode switch connector

Double line

SGI860

Normally open

Normally closed

HOW TO READ WIRING DIAGRAMS

Description (Cont’d)

GI-16

DETECTABLE LINES AND NON-DETECTABLE LINES

In some wiring diagrams, two kinds of lines, representing wires,
with different weight are used.

●

A line with regular weight (wider line) represents a “detect-
able line for DTC (Diagnostic Trouble Code)”. A “detectable
line for DTC” is a circuit in which ECM (Engine Control Mod-
ule) can detect its malfunctions with the on-board diagnostic
system.

●

A line with less weight (thinner line) represents a “non-detect-
able line for DTC”. A “non-detectable line for DTC” is a cir-
cuit in which ECM cannot detect its malfunctions with the
on-board diagnostic system.

SGI862

IGNITION SWITCH

ON or START

VEHICLE
SPEED
SENSOR

SPEED
OMETER

M27

Detectable line
for DTC
Non-detectable
line for DTC

ECM
(ENGINE CONTROL MODULE)

HOW TO READ WIRING DIAGRAMS

Description (Cont’d)

GI-17

MULTIPLE SWITCH

The continuity of a multiple switch is described in two ways as
shown below.

●

The switch chart is used in schematic diagrams.

●

The switch diagram is used in wiring diagrams.

SGI875

Example

(SWITCH CHART)

WIPER SWITCH

(SWITCH DIAGRAM)

INT

OFF

LO

HI

WASH

OFF

INT

LO

HI

WASH

WIPER
SWITCH

Both switches are turned in
combination

Continuity circuit of wiper switch

SWITCH POSITION

OFF

INT

LO

HI

WASH

CONTINUITY CIRCUIT

HOW TO READ WIRING DIAGRAMS

Description (Cont’d)

GI-18