NISSAN PATROL 1998 Y61 / 5.G General Information User Guide

Description
Number Item Description
V1Power condition+This shows the condition when the system receives battery positive voltage (can
be operated).
V2Fusible link+The double line shows that this is a fusible link.
+The open circle shows current ¯ow in, and the shaded circle shows current ¯ow
out.
V3Fusible link/fuse location+This shows the location of the fusible link or fuse in the fusible link or fuse box.
For arrangement, refer to EL section (``POWER SUPPLY ROUTING'').
V4Fuse+The single line shows that this is a fuse.
+The open circle shows current ¯ow in, and the shaded circle shows current ¯ow
out.
V5Current rating+This shows the current rating of the fusible link or fuse.
V6Connectors+This shows that connector
E3is female and connectorM1is male.
+The G/R wire is located in the 1A terminal of both connectors.
+Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is
SMJ connector. Refer to GI-16.
V7Optional splice+The open circle shows that the splice is optional depending on vehicle application.
V8Splice+The shaded circle shows that the splice is always on the vehicle.
V9Page crossing+This arrow shows that the circuit continues to an adjacent page.
+The A will match with the A on the preceding or next page.
V10Common connector+The dotted lines between terminals show that these terminals are part of the same
connector.
V11Option abbreviation+This shows that the circuit is optional depending on vehicle application.
V12Relay+This shows an internal representation of the relay. For details, refer to EL section
(``STANDARDIZED RELAY'').
V13Connectors+This shows that the connector is connected to the body or a terminal with bolt or
nut.
V14Wire color+This shows a code for the color of the wire.
B = Black BR = Brown
W = White OR = Orange
R = Red P = Pink
G = Green PU = Purple
L = Blue GY = Gray
Y = Yellow SB = Sky Blue
LG = Light Green CH = Dark Brown
DG = Dark Green
When the wire color is striped, the base color is given ®rst, followed by the stripe
color as shown below:
Example: L/W = Blue with White Stripe
V15Option description+This shows a description of the option abbreviation used on the page.
V16Switch+This shows that continuity exists between terminals 1 and 2 when the switch is in
the A position. Continuity exists between terminals 1 and 3 when the switch is in
the B position.
V17Assembly parts+Connector terminal in component shows that it is a harness incorporated assem-
bly.
V18Cell code+This identi®es each page of the wiring diagram by section, system and wiring dia-
gram page number.
HOW TO READ WIRING DIAGRAMS
GI-10

Number Item Description
V19Current ¯ow arrow+Arrow indicates electric current ¯ow, especially where the direction of standard
¯ow (vertically downward or horizontally from left to right) is difficult to follow.
+A double arrow ``bÐ
c'' shows that current can ¯ow in either direction depending
on circuit operation.
V20System branch+This shows that the system branches to another system identi®ed by cell code
(section and system).
V21Page crossing+This arrow shows that the circuit continues to another page identi®ed by cell code.
+The C will match with the C on another page within the system other than the
next or preceding pages.
V22Shielded line+The line enclosed by broken line circle shows shield wire.
V23Component box in wave
line+This shows that another part of the component is also shown on another page
(indicated by wave line) within the system.
V24Component name+This shows the name of a component.
V25Connector number+This shows the connector number.
+The letter shows which harness the connector is located in.
Example:M: main harness. For detail and to locate the connector, refer to EL sec-
tion (``Main Harness'', ``HARNESS LAYOUT''). A coordinate grid is included for
complex harnesses to aid in locating connectors.
V26Ground (GND)+The line spliced and grounded under wire color shows that ground line is spliced
at the grounded connector.
V27Ground (GND)+This shows the ground connection.
V28Connector views+This area shows the connector faces of the components in the wiring diagram on
the page.
V29Common component+Connectors enclosed in broken line show that these connectors belong to the
same component.
V30Connector color+This shows a code for the color of the connector. For code meaning, refer to wire
color codes, NumberV14of this chart.
V31Fusible link and fuse box+This shows the arrangement of fusible link(s) and fuse(s), used for connector
views of ``POWER SUPPLY ROUTING'' in EL section.
The open square shows current ¯ow in, and the shaded square shows current
¯ow out.
V32Reference area+This shows that more information on the Super Multiple Junction (SMJ) and Joint
Connectors (J/C) exists on the foldout page. Refer to GI-16 for details.
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-11

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
SGI363
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-12

Harness indication
+Letter designations next to test meter probe indicate harness
(connector) wire color.
+Connector numbers in a single circle
M33indicate harness con-
nectors.
Component indication
+Connector numbers in a double circle indicate component con-
nectors.
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 ``OFF'',
+doors, hood and trunk lid/back door are closed,
+pedals are not depressed, and
+parking brake is released.
AGI070
SGI860
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-13

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 ``detectable
line for DTC (Diagnostic Trouble Code)''. A ``detectable line for
DTC'' is a circuit in which ECM (Engine Control Module) 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 circuit
in which ECM cannot detect its malfunctions with the on board
diagnostic system.
SGI862-A
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-14

MULTIPLE SWITCH
The continuity of 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
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-15

FOLDOUT PAGE
The foldout page should be opened when reading wiring diagram.
Super multiple junction (SMJ)
In wiring diagram, connectors consisting of terminals having terminal numbers with an alphabet (1B, 0D, etc.)
are SMJ connectors.
If connector numbers are shown in Reference Area, these connector symbols are not shown in Connector
Area. For terminal arrangement of these connectors, refer to the foldout page at the end of this manual.
Joint connector
Joint connector symbols are shown in Connector Area in the wiring diagram concerned. Foldout page also
carries inside wiring layout together with such joint connector symbols.
SGI943
HOW TO READ WIRING DIAGRAMS
Description (Cont'd)
GI-16

How to Probe Connectors
Connector damage and an intermittent connection can result from
improperly probing of the connector during circuit checks.
The probe of a digital multimeter (DMM) may not correctly ®t the
connector cavity. To correctly probe the connector, follow the pro-
cedures below using a ``T'' pin. For the best contact grasp the ``T''
pin using an alligator clip.
PROBING FROM HARNESS SIDE
Standard type (not waterproof type) connector should be probed
from harness side with ``T'' pin.
+If the connector has a rear cover such as a ECM connector,
remove the rear cover before probing the terminal.
+Do not probe waterproof connector from harness side.
Damage to the seal between wire and connector may
result.
PROBING FROM TERMINAL SIDE
Female terminal
+There is a small notch above each female terminal. Probe each
terminal with the ``T'' pin through the notch.
Do not insert any object other than the same type male termi-
nal into female terminal.
+Some connectors do not have a notch above each terminal. To
probe each terminal, remove the connector retainer to make
contact space for probing.
Male terminal
Carefully probe the contact surface of each terminal using a ``T''
pin.
Do not bend terminal.
SGI841
SEL265V
SEL266V
SEL267V
HOW TO CHECK TERMINAL
GI-17

How to Check Enlarged Contact Spring of
Terminal
An enlarged contact spring of a terminal may create intermittent
signals in the circuit.
If the intermittent open circuit occurs, follow the procedure below to
inspect for open wires and enlarged contact spring of female ter-
minal.
1. Assemble a male terminal and approx. 10 cm (3.9 in) of wire.
Use a male terminal which matches the female terminal.
2. Disconnect the suspected faulty connector and hold it terminal
side up.
3. While holding the wire of the male terminal, try to insert the
male terminal into the female terminal.
Do not force the male terminal into the female terminal with
your hands.
4. While moving the connector, check whether the male terminal
can be easily inserted or not.
+If the male terminal can be easily inserted into the female
terminal, replace the female terminal.
SEL270V
SEL271V
SEL272V
SEL273V
HOW TO CHECK TERMINAL
GI-18

Waterproof Connector Inspection
If water enters the connector, it can short interior circuits. This may
lead to intermittent problems.
Check the following items to maintain the original waterproof char-
acteristics.
RUBBER SEAL INSPECTION
+Most waterproof connectors are provided with a rubber seal
between the male and female connectors. If the seal is missing,
the waterproof performance may not meet speci®cations.
+The rubber seal may come off when connectors are discon-
nected. Whenever connectors are reconnected, make sure the
rubber seal is properly installed on either side of male or female
connector.
WIRE SEAL INSPECTION
The wire seal must be installed on the wire insertion area of a
waterproof connector. Be sure that the seal is installed properly.
Terminal Lock Inspection
Check for unlocked terminals by pulling wire at the end of connec-
tor. An unlocked terminal may create intermittent signals in the cir-
cuit.
SEL275V
SEL330V
HOW TO CHECK TERMINAL
GI-19