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BCS


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K ELECTRICAL

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                                                                            SECTION
                                                                           BODY CONTROL SYSTEM                                                               C


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                                                            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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                                                                    BCS-1
                                              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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                                                               BCS-3
                               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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                             BCS-5
                    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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                                                  BCS-9
                  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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                                                       BCS-11
WARNING CHIME




   BCS-12



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