Nissan Frontier D40. Manual — part 1017
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ENGINE
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SECTION
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CONTENTS
STARTING SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Power Generation Variable Voltage
Control System . . . . . . . . . . . . . . ..
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . ..
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . . ..
Work Flow . . . . . . . . . . . . . . . .....
FUNCTION DIAGNOSIS . . . . . . . ...
STARTING SYSTEM . . . . . . . . . . ...
A/T . . . . . . . . . . . . . . . . . . . ...
A/T : System Diagram . . . . . . . . . . . ...
A/T : System Description . . . . . . . . . . ...
A/T : Component Parts Location . . . . . . . ...
A/T : Component Description . . . . . . . . ....
M/T WITH CLUTCH INTERLOCK CANCEL SYS-
TEM . . . . . . . . . . . . . . . . . . . ..
M/T WITH CLUTCH INTERLOCK CANCEL SYS-
TEM : System Diagram . . . . . . . . . . .....
M/T WITH CLUTCH INTERLOCK CANCEL SYS-
TEM : System Description . . . . . . . . . .....
M/T WITH CLUTCH INTERLOCK CANCEL SYS-
TEM : Component Parts Location . . . . . . ...
M/T WITH CLUTCH INTERLOCK CANCEL SYS-
TEM : Component Description . . . . . . . .
M/T WITHOUT CLUTCH INTERLOCK CANCEL
SYSTEM . . . . . . . . . . . . . . . . .
M/T WITHOUT CLUTCH INTERLOCK CANCEL
SYSTEM : System Diagram . . . . . . . . .
M/T WITHOUT CLUTCH INTERLOCK CANCEL
SYSTEM : System Description . . . . . . . .
M/T WITHOUT CLUTCH INTERLOCK CANCEL
SYSTEM : Component Parts Location . . . . .
M/T WITHOUT CLUTCH INTERLOCK CANCEL
SYSTEM : Component Description . . . . . . .
COMPONENT DIAGNOSIS . . . . . . .
B TERMINAL CIRCUIT . . . . . . . . . .
Description . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
S CONNECTOR CIRCUIT . . . . . . . . .
QR25DE . . . . . . . . . . . . . . . . . .
QR25DE : Description . . . . . . . . . . . .
QR25DE : Diagnosis Procedure . . . . . . . ..
VQ40DE . . . . . . . . . . . . . . . . . .
VQ40DE : Description . . . . . . . . . . . .
VQ40DE : Diagnosis Procedure . . . . . . . ..
STARTING SYSTEM . . . . . . . . . . .
Wiring Diagram - VQ40DE - With Clutch Interlock
Cancel Switch . . . . . . . . . . . . . . ..
Wiring Diagram - VQ40DE - Without Clutch Inter-
lock Cancel Switch . . . . . . . . . . . . ..
Wiring Diagram - QR25DE . . . . . . . . . ..
SYMPTOM DIAGNOSIS . . . . . . . ..
STARTING SYSTEM . . . . . . . . . . .
Symptom Table . . . . . . . . . . . . . ...
ON-VEHICLE REPAIR . . . . . . . . .
STARTER MOTOR . . . . . . . . . . ...
Removal and Installation (QR25DE) . . . . . ...
STR-2
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ...
STARTER MOTOR . . . . . . . . . . .
PRECAUTIONS
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< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005530130
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Power Generation Variable Voltage Control System
INFOID:0000000005276047
CAUTION:
For this model, the battery current sensor that is installed to the negative battery cable measures the
charging/discharging current of the battery and performs various engine controls. If an electrical com-
ponent is connected directly to the negative battery terminal, the current flowing through that compo-
nent will not be measured by the battery current sensor. This condition may cause a malfunction of
the engine control system and battery discharge may occur. Do not connect an electrical component
or ground wire directly to the battery terminal.
STR-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000005276048
Commercial Service Tool
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Tool number
(Kent Moore No.)
Tool name
Description
—
(—) Model GR-8
Multitasking Battery Diagnostic Sta-
tion
Tests Batteries, starting and charging system.
For operating instructions, refer to diagnostic
station instruction manual.
AWIIA1239ZZ
Tool name
Description
Power tool
Loosening bolts and nuts
PBIC0190E
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