Infiniti F50. Manual - part 571

HOW TO USE THIS MANUAL

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Components shown in an illustration may be identified by a circled number. When this style of illustration
is used, the text description of the components will follow the illustration.

SYMBOLS

SAIA0399E

SYMBOL

DESCRIPTION

Tightening torque
The tightening torque specifications of bolts and nuts may be presented as either a range or a standard tightening 
torque.

Should be lubricated with grease. Unless otherwise indicated, use recommended multi-purpose grease.

Should be lubricated with oil.

Sealing point

Checking point

Always replace after every disassembly.

 

P

Apply petroleum jelly.

Apply ATF.

Select with proper thickness.

Adjustment is required.

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HOW TO USE THIS MANUAL

How to Follow Trouble Diagnoses

EAS0007R

DESCRIPTION

NOTICE:
Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following
instructions before diagnosing.

1.

Before performing trouble diagnoses, read the “Preliminary Check”, the “Symptom Chart” or the
“Work Flow”.

2.

After repairs, re-check that the problem has been completely eliminated.

3.

Refer to Component Parts and Harness Connector Location for the Systems described in each
section for identification/location of components and harness connectors.

4.

Refer to the Circuit Diagram for quick pinpoint check.
If you need to check circuit continuity between harness connectors in more detail, such as when a
sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout in PG
section for identification of harness connectors.

5.

When checking circuit continuity, ignition switch should be OFF.

6.

Before checking voltage at connectors, check battery voltage.

7.

After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure
that all harness connectors are reconnected as they were.

HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES

1.

Work and diagnostic procedure
Start to diagnose a problem using procedures indicated in enclosed test groups.

2.

Questions and required results
Questions and required results are indicated in bold type in test group.
The meaning of are as follows:

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HOW TO USE THIS MANUAL

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3.

Symbol used in illustration
Symbols included in illustrations refer to measurements or procedures. Before diagnosing a problem,
familiarize yourself with each symbol. Refer to  "Connector Symbols" in GI Section and "KEY TO SYM-
BOLS SIGNIFYING MEASUREMENTS OR PROCEDURES" below.

4.

Action items
Next action for each test group is indicated based on result of each question. Test group number is shown
in the left upper portion of each test group.

HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION

There are two types of harness wire color and connector number indication.

TYPE 1: Harness Wire Color and Connector Number are Shown in Illustration

●

Letter designations next to test meter probe indicate harness
wire color.

●

Connector numbers in a single circle (e.g. M33) indicate har-
ness connectors.

●

Connector numbers in a double circle (e.g. F211) indicate com-
ponent connectors.

a. Battery voltage 

→

 11 - 14V or approximately 12V

b. Voltage

: Approximately 0V 

→

 Less than 1V

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HOW TO USE THIS MANUAL

TYPE 2: Harness Wire Color and Connector Number are Shown in Text

KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES

SGI144A

Symbol

Symbol explanation

Symbol

Symbol explanation

Check after disconnecting the connec-
tor to be measured.

Procedure with Generic Scan Tool 
(GST, OBD-II scan tool) 

Check after connecting the connector 
to be measured.

Procedure without CONSULT, CON-
SULT-II or GST

Insert key into ignition switch.

A/C switch is “OFF”.

Remove key from ignition switch.

A/C switch is “ON”.

Turn ignition switch to “OFF” position.

REC switch is “ON”.

Turn ignition switch to “ON” position.

REC switch is “OFF”.

Turn ignition switch to “START” posi-
tion.

Fan switch is “ON”. (At any position 
except for “OFF” position)

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

Fan switch is “OFF”.

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

Apply positive voltage from battery 
with fuse directly to components.