2003 NISSAN TEANA relay

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1. CAN communication status

CAN communication is normally performed with other control units.

Individual unit control by IPDM E/R is normally performed.

When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status

Process to stop CAN communication is activated.

All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.
3. Sleep status

IPDM E/R operates in low power mode.

CAN communication is stopped.

When a change in CAN communication line is detected, mode switches to CAN communication status.

When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.
CAN Communication System DescriptionBKS0024O
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected 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 UnitBKS0024P
Refer to LAN-49, "CAN System Specification Chart" .
Function of Detecting Ignition Relay MalfunctionBKS0024Q

When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
and parking lamps for 10 minutes to indicate ignition relay malfunction.

When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
NOTE:
When the ignition switch is turned ON, the tail lamp is OFF.
Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF —
ON OFF —
OFF ON ON (10 minutes)

PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

All Items, Main Items, Selection From Menu
NOTE:

Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the display may not be cor-
rect.

*1: The vehicle without the Intelligent Key system displays only ON without change.

*2: This item is displayed, but does not function.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch item to be tested.
3. Touch “START”, and confirm its operation.
4. Touch “OFF” while testing to stop the operation.
CONSULT-II
screen displayItem name Display or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELEC-
TION
FROM
MENU
MOTOR FAN REQ Motor fan request 1/2/3/4×× ×Signal status input from ECM
AC COMP REQ Compressor request ON/OFF×× ×Signal status input from ECM
TAIL&CLR REQ Tail & clear request ON/OFF×× ×Signal status input from BCM
HL LO REQ Headlamp LO request ON/OFF×× ×Signal status input from BCM
HL HI REQ Headlamp HI request ON/OFF×× ×Signal status input from BCM
FR FOG REQ Front fog request ON/OFF×× ×Signal status input from BCM
HL WASHER REQHeadlamp washer
requestON/OFF××Signal status input from head-
lamp washer switch
FR WIP REQ Front wiper requestSTOP/1LOW/
LOW/HI×× ×Signal status input from BCM
WIP AUTO STOP Wiper auto stop ACT P/STOP P×× ×Output status of IPDM E/R
WIP PROT Wiper protection OFF/BLOCK×× ×Control status of IPDM E/R
ST RLY REQ
*1Starter request ON/OFF××Status of input signal
IGN RLY Ignition relay status ON/OFF×× ×Ignition relay status monitored
with IPDM E/R
RR DEF REQRear window defogger
requestON/OFF×× ×Signal status input from BCM
OIL P SW Oil pressure switch OPEN/CLOSE××Signal status input in IPDM E/R
DTRL REQ*
2Daytime running light
requestON/OFF××—
HOOD SW
*2Hood switch ON/OFF××—
THFT HRN REQTheft warning horn
requestON/OFF××Signal status input from BCM
HORN CHIRP
*2Horn chirp ON/OFF××—
CONSULT-II screen display Test item Description
TAIL LAMPParking, license plate and tail
lamps operationTail lamp relay is operated by switching operation ON-OFF.
REAR DEFOGGER Rear window defogger operation Rear defogger relay is operated by switching operation ON-OFF.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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NOTE:
High beam headlamp repeats high beam and low beam every 1 second. When high beam headlamp of xenon type operates, the head-
lamp perform the HIGH-LOW changeover operation without illuminating the headlamp bulb.
Auto Active TestBKS002EW
DESCRIPTION

In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to
the following systems:
–Rear window defogger
–Front wiper
–Parking, license plate and tail lamps
–Front fog lamp
–Headlamp (HI, LO)
–A/C compressor (magnet clutch)
–Cooling fan
–Oil pressure warning lamp
OPERATION PROCEDURE
1. Close hood and front door (passenger side), and then lift wiper arms away from windshield (to prevent
glass damage by wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn ignition switch ON, and within 20 seconds, press driver's door switch 10 times (close the other
doors). Then turn ignition switch OFF.
4. Turn ignition switch ON within 10 seconds after ignition switch OFF.
5. When auto active test mode is actuated, horn chirps once. Oil pressure warning lamp starts blinking.
6. After a series of operations is repeated three times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway, turn ignition switch OFF.
CAUTION:
Be sure to inspect door switch when the auto active test cannot be performed.
FRONT WIPER Front wiper (HI, LO) operationFront wiper relay and front wiper high relay are operated by switch-
ing operation (OFF: OFF, HI: high speed, LO: low speed).
MOTOR FAN Cooling fan operationCooling fan relay-1, 2 and 3 are operated by switching operation
(1: OFF, 2: LO, 3: MID, 4: HI).
HEAD LAMP WASHER Headlamp washer operation Headlamp washer relay is operated by switching operation ON-OFF.
LAMPSHigh beam headlamp and low
beam headlamp operation
NOTEHeadlamp low relay and headlamp high relay are operated by
switching operation (OFF: OFF, HI: high beam, LO: low beam).
Front fog lamp operationFront fog lamp relay is operated by switching operation
(OFF: OFF, FOG: ON).
HORN Horn operation Touch “ON” button, horn relay operates 20 ms.CONSULT-II screen display Test item Description

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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Concept of Auto Active Test

IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.

If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.
Diagnosis chart in auto active test mode
Symptom Inspection contents Possible cause
Any of front wiper, park-
ing, license plate and
tail lamps, front fog
lamp, and headlamp
(HI, LO) do not operate.Perform auto active
test. Does system in
question operate?YES

BCM signal input system malfunction
NO

Lamp/wiper motor malfunction

Lamp/wiper motor ground circuit malfunction

Harness/connector malfunction between IPDM E/R and system in ques-
tion

IPDM E/R (integrated relay) malfunction
Rear window defogger
does not operate.Perform auto active
test. Does rear win-
dow defogger oper-
ate?YES

BCM signal input circuit malfunction
NO

Rear window defogger relay malfunction

Harness/connector malfunction between IPDM E/R and rear window
defogger relay

Open circuit of rear window defogger

IPDM E/R malfunction
A/C compressor does
not operate.Perform auto active
test. Does magnetic
clutch operate?YES

BCM signal input circuit malfunction

CAN communication signal between BCM and ECM.

CAN communication signal between ECM and IPDM E/R
NO

Magnetic clutch malfunction

Harness/connector malfunction between IPDM E/R and magnetic clutch

IPDM E/R (integrated relay) malfunction
Cooling fan does not
operate.Perform auto active
test. Does cooling fan
operate?YES

ECM signal input circuit

CAN communication signal between ECM and IPDM E/R
NO

Cooling fan motor malfunction

Harness/connector malfunction between IPDM E/R and cooling fan
motor

IPDM E/R (integrated relay) malfunction
Oil pressure warning
lamp does not operate.Perform auto active
test. Does oil pres-
sure warning lamp
blink?YES

Harness/connector malfunction between IPDM E/R and oil pressure
switch

Oil pressure switch malfunction

IPDM E/R malfunction
NO

CAN communication signal between BCM and Unified Meter and A/C
Amp.

Combination meter

HARNESS
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Wiring Diagram Codes (Cell Codes) BKS002FS
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
A/C ATC Air Conditioner
ABS BRC Anti-Lock Brake System
AFS LT Adaptive Front Lighting System
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Auto Light Control
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-Up Lamp
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN CVT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
COMBSW LT Combination Switch
COMM AV Audio Visual Communication Line
COOL/F EC Cooling Fan Control
CVTIND DI CVT Indicator Lamp
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
EMNT EC Electronic Controlled Engine Mount
ENGSS AT Engine Speed Signal
ETC1 EC Electric Throttle Control Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
F/LID BL Fuel Lid Opener
F/PUMP EC Fuel Pump
FRO2 EC Heated Oxygen Sensor 1 Heater

STANDARDIZED RELAY
PG-77
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STANDARDIZED RELAY PFP:00011
Description BKS00255
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
SEL881H
1M ···················· 1 Make 2M ···················· 2 Make
1T ···················· 1 Transfer 1M·1B ···················· 1 Make 1 Break
SEL882H

PG-78
STANDARDIZED RELAY

CKIM0221E

PG-80
FUSE, FUSIBLE LINK AND RELAY BOX

FUSE, FUSIBLE LINK AND RELAY BOXPFP:24382
Terminal ArrangementBKS00257
CKIM0678E