NISSAN PICK-UP 1998 Repair Manual

Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models)
The Supplemental Restraint System ``AIR BAG'', used along with a seat belt, helps to reduce the risk or
severity of injury to the driver in a frontal collision. The Supplemental Restraint System consists of an air
bag module (located in the center of the steering wheel), a diagnosis sensor unit, warning lamp, wiring har-
ness and spiral cable. Information necessary to service the system safely is included in theRS sectionof
this Service Manual.
WARNING:
lTo 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 per-
formed by an authorized NISSAN dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses are covered with yellow insulation either just before the
harness connectors or for the complete harness, for easy identification.
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models)
The Supplemental Restraint System ``AIR BAG'', used along with a seat belt, helps to reduce the risk or
severity of injury to the driver in a frontal collision. The Supplemental Restraint System consists of an air
bag module (located in the center of the steering wheel), a diagnosis sensor unit, warning lamp and spiral
cable. Information necessary to service the system safely is included in theRS sectionof this Service
Manual.
WARNING:
lTo 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 per-
formed by an authorized NISSAN dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo not use electrical test equipment on any circuit related to the SRS.
PRECAUTIONS
EL-1

Description
HARNESS CONNECTOR
lAll harness connectors have been modified to prevent accidental looseness or disconnection.
lThe connector can be disconnected by pushing or lifting the locking section.
CAUTION:
Do not pull the harness when disconnecting the connector.
[Example]
SEL769D
HARNESS CONNECTOR
EL-2

Description
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.
TYPE OF STANDARDIZED RELAYS
1M ................ 1 Make 2M ................ 2 Make
1T ................ 1 Transfer 1Mz1B ................ 1 Make 1 Break
SEL881H
SEL882H
STANDARDIZED RELAY
EL-3

SEL661TA
STANDARDIZED RELAY
Description (Cont'd)
EL-4

Schematic
HEL309A
POWER SUPPLY ROUTING
EL-5

Wiring Diagram Ð POWER Ð
BATTERY POWER SUPPLY Ð IGNITION SWITCH IN ANY POSITION
HEL310A
POWER SUPPLY ROUTING
EL-6

HEL311A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-7

BATTERY POWER SUPPLY Ð IGNITION SW. IN ANY POSITION
HEL312A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-8

HEL313A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-9

ACCESSORY POWER SUPPLY Ð IGNITION SW. IN ``ACC'' OR ``ON''
HEL314A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-10