NISSAN TEANA 2003 Service Manual

PRECAUTION
WW-3
C
D
E
F
G
H
I
J
L
MA
B
WW

PRECAUTIONPFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BKS001TD
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
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 per-
formed by an authorized NISSAN/INFINITI dealer.

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.

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
harness connectors.

WW-4
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationBKS001TF
System DescriptionBKS001TG

BCM (Body Control Module) controls front wiper low, high and intermittent operation.

IPDM E/R (Intelligent Power Distribution Module Engine Room) operates front wiper motor according to
CAN communication signals from BCM.
Power is supplied at all times

to ignition relay (located in IPDM E/R), from battery direct,

through 50 A fusible link (letter M, located in fuse and fusible link block)

to BCM terminal 55,

through 15 A fuse [No. 17, located in fuse block (J/B)]

to BCM terminal 42,

through 20 A fuse (No. 73, located in IPDM E/R)

to front wiper relay (located in IPDM E/R),

through 15 A fuse (No. 78, located in IPDM E/R)

to CPU (central processing unit) located in IPDM E/R,

through 15 A fuse (No. 71, located in IPDM E/R)

to CPU located in IPDM E/R.
When the ignition switch ON or START position, power is supplied

to ignition relay (located in IPDM E/R),

through 10 A fuse [No. 1, located in fuse block (J/B)]

to BCM terminal 38,
PKIA9954E

FRONT WIPER AND WASHER SYSTEM
WW-5
C
D
E
F
G
H
I
J
L
MA
B
WW


through 10 A fuse (No. 84, located in IPDM E/R)

to front washer pump terminal 1.
Ground is supplied

to BCM terminal 52 and

to combination switch terminal 12

through grounds M71 and M72,

to IPDM E/R terminals 38 and 60

through grounds E1 and E31.
LOW SPEED WIPER OPERATION
When the front wiper switch is in LO position, BCM detects the FR WIPER LOW (ON) by BCM combination
switch reading function. BCM sends front wiper request signal (LO) through CAN communication.
When receiving front wiper request signal (LO), IPDM E/R turns ON front wiper relay in IPDM E/R. IPDM E/R
supplies power

through IPDM E/R terminal 21, front wiper high relay and front wiper relay

to front wiper motor terminal 1.
Ground is supplied

to front wiper motor terminal 2

through grounds E1 and E31.
With power and ground is supplied, the front wiper motor operates at low speed.
HIGH SPEED WIPER OPERATION
When the front wiper switch is in HI position, BCM detects the FR WIPER HI (HI) by BCM combination switch
reading function. BCM sends front wiper request signal (HI) through CAN communication.
When receiving front wiper request signal (HI), IPDM E/R turns ON front wiper relay and front wiper high relay
in IPDM E/R. IPDM E/R supplies power

through IPDM E/R terminal 31, front wiper high relay and front wiper relay

to front wiper motor terminal 4.
Ground is supplied

to front wiper motor terminal 2

through grounds E1 and E31.
With power and ground is supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
Front wiper intermittent operation is determined from a combination of 3 switches (INT VOLUME 1, 2, and 3)
and vehicle speed signal*.
When the front wiper switch is in INT position, BCM detects the FR WIPER INT (ON) and ON/OFF status of
the INT VOLUME 1, 2, and 3 by BCM combination switch reading function. BCM judges the condition of wiper
intermittent dial position by ON/OFF status of INT VOLUME 1, 2, and 3 .
BCM sends front wiper request signal (1LOW) at certain intervals through CAN communication. The interval is
calculated by wiper intermittent dial position and vehicle speed signal received from combination meter
through CAN communication.
When receiving front wiper request signal (1LOW), IPDM E/R turns ON front wiper relay in IPDM E/R, and
operates front wiper motor at low speed. Then IPDM E/R detects front wiper arms reach to the stop position
via wiper auto stop signal from front wiper motor, IPDM E/R turns OFF front wiper relay, and sends front wiper
auto stop signal (ON) to BCM through CAN communication, and controls intermittent operation.

WW-6
FRONT WIPER AND WASHER SYSTEM

Wiper Intermittent Dial Position Setting
Example: For wiper intermittent dial position 1
Using combination switch reading function, BCM detects ON/OFF status of INT VOLUME 1, 2, and 3.
When combination switch status is as listed below, BCM determines that it is wiper Intermittent dial position 1.

INT VOLUME 1: ON (Continuity exists between combination switch output 3 and input 1.)

INT VOLUME 2: ON (Continuity exists between combination switch output 5 and input 1.)

INT VOLUME 3: ON (Continuity exists between combination switch output 4 and input 2.)
BCM determines front wiper intermittent operation interval from wiper intermittent dial position 1 and vehicle
speed, and sends wiper request signal (INT) to IPDM E/R.
AUTO STOP OPERATION
With the front wiper switch turned OFF, front wiper motor will continue to operate until front wiper arms reach
windshield base.
When front wiper arms are not located at base of windshield with front wiper switch OFF, power is provided

from IPDM E/R terminal 21

to front wiper motor terminal 1, in order to continue front wiper motor operation at low speed.
When front wiper arms reach base of windshield, front wiper motor terminals 2 and 5 are connected, and
ground is supplied

to IPDM E/R terminal 32

through front wiper motor terminal 5

through front wiper motor terminal 2

through grounds E1 and E31.
Then the IPDM E/R sends front wiper auto stop signal (ON) to BCM through CAN communication.
When the BCM receives front wiper auto stop signal (ON), BCM sends front wiper request signal (OFF) to
IPDM E/R through CAN communication.
IPDM E/R stops front wiper motor. Front wiper motor will then stop front wiper arms at the STOP position.
WASHER OPERATION
When the front washer switch is ON position, front washer pump operates, and BCM detects the FR WASHER
(ON) by BCM combination switch reading function. Combination switch ground is supplied

to front washer pump terminal 2

through combination switch terminal 11

to combination switch terminal 12

through grounds M71 and M72.
When BCM detects the FR WASHER (ON) for 0.4 seconds or longer, BCM sends front wiper request signal
(LO) through CAN communication. IPDM E/R operates front wiper motor at low speed.
When BCM detects the front washer switch is OFF, low speed wiper operation cycles approximately 2 times
and stops.
Wiper intermittent dial
positionIntermittent operation
intervalCombination switch
INT VOLUME 1 INT VOLUME 2 INT VOLUME 3
1Short
↑
↓
LongON ON ON
2ONONOFF
3ONOFFOFF
4 OFF OFF OFF
5OFFOFFON
6 OFF ON ON
7 OFF ON OFF

FRONT WIPER AND WASHER SYSTEM
WW-7
C
D
E
F
G
H
I
J
L
MA
B
WW

MIST OPERATION
When the front wiper switch is turned to the MIST position, front wiper low speed operation cycles once and
then stops.
For additional information about front wiper operation under this condition. Refer to WW-5, "
LOW SPEED
WIPER OPERATION" .
If the switch is held in the MIST position, low speed operation continues.
FAIL-SAFE FUNCTION
If an abnormality occurs in CAN communications, IPDM E/R holds the condition just before fail-safe status is
initiated until ignition switch is turned off. (If front wipers were operating in LO just before the initiation of fail-
safe status, they continue to operate in LO until ignition switch is turned OFF.)
COMBINATION SWITCH READING FUNCTION
Description

BCM reads combination switch (wiper switch) status, and controls front wipers according to the results.

BCM reads information of a maximum of 20 switches by combining 5 output terminals (OUTPUT 1-5) and
5 input terminals (INPUT 1-5).
Operation Description

BCM activates transistors of output terminals (OUTPUT 1-5) periodically and allows current to flow in turn.

If any (one or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.

At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that the switch is ON.
SKIB8812E

WW-8
FRONT WIPER AND WASHER SYSTEM

BCM - Operation Table of Combination Switches
BCM reads operation status of combination switch using combinations shown in table below.
Sample Operation: (When Wiper Switch is Turned to LOW Position)

When wiper switch is turned to LOW position, FR WIPER LOW contact in combination switch turns ON. At
this time if OUTPUT 1 transistor is activated, BCM detects that voltage changes in INPUT 3.

When BCM detects that voltage changes in INPUT 3 while OUTPUT 1 transistor is ON, it judges that front
wiper switch is in LOW position. Then BCM sends front wiper request signal (LO) to IPDM E/R through
CAN communication.

If BCM detects that voltage changes in INPUT 3 when OUTPUT 1 transistor is activated again, it recog-
nizes that wiper switch is still in LOW position.
NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore after switch is turned ON,
electrical loads are activated with time delay. But this time delay is so short that it cannot be detected by
human senses.
PKIA9949E
SKIB8814E

FRONT WIPER AND WASHER SYSTEM
WW-9
C
D
E
F
G
H
I
J
L
MA
B
WW

Operation Mode
Combination switch reading function has operation modes shown below.
1. Normal status
–When BCM is not in sleep status, OUTPUT terminals (1-5) each turn ON-OFF every 10 ms.
2. Sleep status
–When BCM is in sleep status, transistors of OUTPUT 1 stop the output, and BCM enters low power mode.
OUTPUT 2- 5 send out ON signal every 60 ms, and accept only input from lighting switch (except turn sig-
nal switch) system.
CAN Communication System DescriptionBKS001TH
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-board multi-
plex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitBKS001TI
Refer to LAN-49, "CAN System Specification Chart" .
SKIB7305E

WW-10
FRONT WIPER AND WASHER SYSTEM

SchematicBKS001TJ
TKWM4641E

FRONT WIPER AND WASHER SYSTEM
WW-11
C
D
E
F
G
H
I
J
L
MA
B
WW

Wiring Diagram — WIPER —BKS001TK
TKWH0279E

WW-12
FRONT WIPER AND WASHER SYSTEM

TKWM1677E