Infiniti F50. Manual - part 572

HOW TO USE THIS MANUAL

GI-13

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Turn ignition switch from “OFF” to 
“ON” position.

Drive vehicle.

Turn ignition switch from “ON” to 
“OFF” position.

Disconnect battery negative cable.

Do not start engine, or check with 
engine stopped.

Depress brake pedal.

Start engine, or check with engine run-
ning.

Release brake pedal.

Apply parking brake.

Depress accelerator pedal.

Release parking brake.

Release accelerator pedal.

Check after engine is warmed up suffi-
ciently.

Pin terminal check for SMJ type ECM 
and TCM connectors.
For details regarding the terminal 
arrangement, refer to the “ELEC-
TRICAL UNITS” electrical reference 
page at the end of the manual.

Voltage should be measured with a 
voltmeter.

Circuit resistance should be measured 
with an ohmmeter.

Current should be measured with an 
ammeter.

Pulse signal should be checked with 
an oscilloscope.

Procedure with CONSULT-II

Procedure without CONSULT-II

Symbol

Symbol explanation

Symbol

Symbol explanation

GI-14

HOW TO USE THIS MANUAL

How to Read Wiring Diagrams

EAS00076

CONNECTOR SYMBOLS 

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

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

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

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Certain systems and components, especially those related to
OBD, may use a new style slide-locking type harness connector.
For description and how to disconnect, refer to PG section,
“Description”, “HARNESS CONNECTOR”.

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

SAIA0257E

SGI363

HOW TO USE THIS MANUAL

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SAMPLE/WIRING DIAGRAM - EXAMPL - 

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For detail, refer to following “DESCRIPTION”.

SGI091A

GI-16

HOW TO USE THIS MANUAL

Optional Splice

DESCRIPTION 

SGI942

Num-

ber

Item

Description

1

Power condition

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This shows the condition when the system receives battery positive voltage (can be oper-
ated).

2

Fusible link

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The double line shows that this is a fusible link.

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The open circle shows current flow in, and the shaded circle shows current flow out.

3

Fusible link/fuse loca-
tion

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This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrange-
ment, refer to PG section, POWER SUPPLY ROUTING.

4

Fuse

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The single line shows that this is a fuse.

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The open circle shows current flow in, and the shaded circle shows current flow out.

5

Current rating

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This shows the current rating of the fusible link or fuse.

6

Connectors

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This shows that connector E3 is female and connector M1 is male.

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The G/R wire is located in the 1A terminal of both connectors.

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Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connec-
tor. Refer to PG section,  SMJ (SUPER MULTIPLE JUNCTION).

7

Optional splice

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The open circle shows that the splice is optional depending on vehicle application.

8

Splice

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The shaded circle shows that the splice is always on the vehicle.

9

Page crossing

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This arrow shows that the circuit continues to an adjacent page.

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The A will match with the A on the preceding or next page.

10

Common connector

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The dotted lines between terminals show that these terminals are part of the same connector.

11

Option abbreviation

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This shows that the circuit is optional depending on vehicle application.

12

Relay

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This shows an internal representation of the relay. For details, refer to PG section, STAN-
DARDIZED RELAY.

13

Connectors

●

This shows that the connector is connected to the body or a terminal with bolt or nut.