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K ELECTRICAL
A
B
SECTION
BODY CONTROL SYSTEM C
D
E
CONTENTS
PRECAUTIONS ......................................................... 2
. Description ............................................................... 4
. F
Supplemental Restraint System (SRS) "AIR BAG" Circuit Diagram ........................................................ 5
.
and "SEAT BELT PRE-TENSIONER" ..................... 2 . Smart Entrance Control Unit Inspection Table ......... 6 .
Wiring Diagrams and Trouble Diagnosis ................. 2 . WARNING CHIME ...................................................... 9 . G
PREPARATION .......................................................... 3
. Description ............................................................... 9
.
Special Service Tools .............................................. 3
. Circuit Diagram ...................................................... 10
.
SMART ENTRANCE CONTROL UNIT ..................... 4 . Warning Chime Unit Inspection Table ................... 11 .
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PRECAUTIONS
PRECAUTIONS PFP:00001
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" EKS0035V
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 SRS and SB section of this Service Man-
ual.
WARNING:
q 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 per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q 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 harness connec-
tors.
Wiring Diagrams and Trouble Diagnosis EKS0035W
When you read wiring diagrams, refer to the following:
q GI-13, "How to Read Wiring Diagrams", and
q PG-8, "POWER SUPPLY ROUTING".
When you perform trouble diagnosis, refer to the following:
q GI-9, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES", and
q GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident".
Check for any Service bulletins before servicing the vehicle.
BCS-2
PREPARATION
PREPARATION PFP:00002
A
Special Service Tools EKS0035X
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
B
(Kent-Moore No.)
Description
Tool name
Used to test keyfobs
(J-43241) C
Remote keyless entry tester
D
LEL946A
*: Special tool or commercial equivalent E
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SMART ENTRANCE CONTROL UNIT
SMART ENTRANCE CONTROL UNIT PFP:28596
Description EKS0035Y
The following systems are controlled by the smart entrance control unit.
q Warning chime
q Rear window defogger timer
q Power window
q Power door lock
q Remote keyless entry
q Vehicle security
q Room lamp
For detailed description and wiring diagrams, refer to the relevant pages for the each system.
The control unit receives data from the switches and sensors to control their corresponding system relays and
actuators.
System Input Output
Key switch (Insert)
Ignition switch (ON)
Warning chime Lighting switch (1st) Warning chime
Seat belt buckle switch
Front door switch LH
Ignition switch (ON or START)
Rear window defogger timer Rear window defogger relay
Rear window defogger switch
Ignition switch (ON)
Power window Power window relay
Door switches
Door lock/unlock switch
Key switch (Insert)
Power door lock Door lock actuator
Door switches
Door key cylinder switches
Key switch (Insert)
Horn relay
Ignition switch (ACC)
Vehicle security lamp relay
Remote keyless entry Door switches
Door lock actuator
Antenna (Keyfob signal)
Room lamp
Door lock/unlock switches
Ignition switch (ACC, ON) Horn relay
Door switches Vehicle security lamp relay
Vehicle security Hood switch Vehicle security relay
Door lock/unlock switches (Starter interrupt)
Door key cylinder switch (Lock/unlock) Security indicator lamp
Door switches
Room lamp Ignition switch Room lamp
Key switch (Insert)
BCS-4
SMART ENTRANCE CONTROL UNIT
Circuit Diagram EKS0035Z
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SMART ENTRANCE CONTROL UNIT
WKWA0339E
Smart Entrance Control Unit Inspection Table EKS00360
BCS-6
SMART ENTRANCE CONTROL UNIT
Terminal Wire Voltage (V)
Connections Operated condition
No. color (Approx.) A
1 G/R Front door switch LH OFF (Closed) ON (Open) 5V 0V
2 G/B Front door switch RH OFF (Closed) ON (Open) 5V 0V
B
Rear door switch LH and RH,
3 R/B OFF (Closed) ON (Open) 5V 0V
back door switch
Main power window and door
4 BR lock/unlock switch, door lock/ Neutral Unlock 5V 0V C
unlock switch RH
Main power window and door
5 LG/R lock/unlock switch, door lock/ Neutral Lock 5V 0V D
unlock switch RH
6 B/P Hood switch ON (Open) OFF (Closed) 0V 5V
Front door key cylinder unlock E
10 Y/R switch LH or back door key cylin- OFF (Neutral) ON (Unlock) 5V 0V
der unlock switch
Front door key cylinder lock F
11 Y switch LH or back door key cylin- OFF (Neutral) ON (Lock) 5V 0V
der lock switch
14 G/B Rear window defogger switch OFF ON 5V 0V
G
25 W/G Ignition key switch (Insert) Key inserted Key removed from ignition key cylinder 12V 0V
26 G Ignition switch (ACC) ACC position 12V
27 G/W Ignition switch (ON) Ignition key is in ON position 12V H
28 B/P Seat belt buckle switch Unfastened Fastened (Ignition key is in ON position) 0V 12V
When interior lamp is operated using keyfob. (Interior lamp
31 R/B Room lamp 12V 0V I
switch in DOOR position)
32 R/B Door ajar indicator lamp OFF ON (Ignition key is in ON position) 12V 0V
37 G/R Rear window defogger relay OFF ON (Ignition key is in ON position) 12V 0V J
38 G/OR Security indicator lamp Turns off Turns on 12V 0V
When panic alarm is operated using keyfob or when alarm
39 R Vehicle security lamp relay 12V 0V
is activated BCS
Vehicle security relay (Starter
40 R/W OFF ON (Ignition key is in ON position) 12V 0V
cut)
When panic alarm is operated using keyfob or when alarm L
42 LG/R Horn relay 12V 0V
is activated
43 B Ground -- --
Ignition key is in ON position 45 seconds after ignition M
46 G/W Power window relay 12V 0V
key is turned to OFF position
47 GY Turn signal lamp LH When doors are locked using keyfob 12V 0V
48 P/B Turn signal lamp RH When doors are locked using keyfob 12V 0V
49 G Power source (Fuse) -- 12V
50 R/G Battery saver (Room lamp) Turns off Turns on 12V 0V
51 W/R Power source (C/B) -- 12V
Front door lock actuator LH and Lock 12V
Main power window and door lock/unlock
54 L RH, rear door lock actuator LH Neutral,
switch, door lock/unlock switch RH 0V
and RH unlock
Main power window and door lock/unlock Unlock 12V
55 G/W Front door lock actuator LH
switch, door lock/unlock switch RH Neutral, lock 0V
Front door lock actuator RH, rear Unlock 12V
Main power window and door lock/unlock
56 L/R door lock actuator LH and RH,
switch, door lock/unlock switch RH Neutral, lock 0V
back door lock actuator
BCS-7
SMART ENTRANCE CONTROL UNIT
Terminal Wire Voltage (V)
Connections Operated condition
No. color (Approx.)
58 L/R Lighting switch 1ST, 2ND positions: ON OFF 12V 0V
64 B Ground -- --
BCS-8
WARNING CHIME
WARNING CHIME PFP:24814
A
Description EKS003L0
When the vehicle is not equipped with power door locks, the following inputs, in the proper combination, will
activate the warning chime unit: B
q Key switch
q Combination switch (lighting switch)
q Ignition switch C
q Seat belt buckle switch LH
q Front door switch LH
D
For detailed description and wiring diagrams for each of these components, refer to DI-31, "MODELS WITH-
OUT POWER DOOR LOCKS" and DI-34, "MODELS WITHOUT POWER DOOR LOCKS" .
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WARNING CHIME
Circuit Diagram EKS003L1
LKWA0128E
BCS-10
WARNING CHIME
Warning Chime Unit Inspection Table EKS003L2
A
Terminal Wire Voltage
Connections Operated condition
No. color (Approx.)
Ignition switch in OFF or ACC position 0V
1 G/W Ignition switch input B
Ignition switch in ON or START position 12V
Seat belt unfastened (switch closed) 0V
2 B/P Seat belt buckle switch LH input
Seat belt fastened (switch open) 12V C
Combination switch (lighting Lighting switch OFF 0V
4 L/R
switch) input Lighting switch in 1st or 2nd position (ON) 12V
D
Key removed from switch 0V
5 W/G Key switch input
Key inserted in switch 12V
Door open (switch closed) 0V E
7 G/R Front door switch LH input
Door closed (switch open) 12V
8 B Ground -- 0V
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WARNING CHIME
BCS-12
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