2003 NISSAN TEANA steering

BL-88
INTELLIGENT KEY SYSTEM

Terminals and Reference Value for Intelligent Key UnitBIS000X4
Te r m i -
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Ignition
Knob
PositionOperation or Conditions
1L/YSteering lock unit
power supplyOutput LOCK — 5
2 L CAN-HInput/
Output—— —
3 P CAN-LInput/
Output—— —
4SBIntelligent Key warn-
ing buzzer (driver
side/trunk room)Output LOCKAny door open and
operate remote
controller button or
door request
switch.Buzzer
OFFBattery voltage
Sound
buzzer0
5B/WDoor request switch
(driver side)Input LOCKDoor request switch operation:
Press (ON).0
Other than the above (OFF) 5
6 G Ignition switch (ON) Input ON — Battery voltage
7 B/R key switch Input LOCKInsert mechanical key into igni-
tion key cylinder.Battery voltage
Remove mechanical key from
ignition key cylinder.0
11 Y/B Power source (Fuse) Input LOCK — Battery voltage
12 B Ground — ON — 0
13 V/WInside key antenna
(+)
(Trunk room)
Output LOCKAny door open → Close
(Door switch: ON → OFF)
14 W/LInside key antenna (-)
(Trunk room)
15 R/YInside key antenna
(+) signal
(Center console)
Output LOCKAny door open → Close (Door
switch: ON → OFF)
Ignition knob switch: ON (press
ignition knob.)
16 R/GInside key antenna (-)
signal
(Center console)
17 W/ROutside key antenna
(Rear bumper) (+)
Output LOCKTrunk opener request switch
operation (Switch: ON)
18 W/BOutside key antenna
(Rear bumper) (-)
19 POutside key antenna
(driver side) (+)
Output LOCKDriver door request signal opera-
tion (Switch: ON)
20 OOutside key antenna
(driver side) (-)
SIIA1910J
SIIA1910J
SIIA1910J
SIIA1910J

INTELLIGENT KEY SYSTEM
BL-89
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25 P/LDoor request switch
(passenger side)Input LOCKDoor request switch operation:
Press (ON)0
Other than the above (OFF) 5
27 BR Ignition knob switch Input —Press ignition knob. Battery voltage
Return ignition knob to LOCK
position.0
28 LG/RDoor unlock sensor
(driver side)Input LOCK Driver side doorLocked 5
Other than
above0
29 G/OTrunk opener request
switchInput LOCKTrunk opener request switch
operation: Press (ON)0
Other than the above (OFF) 5
31 G/YSteering lock unit
ground—ON — 0
32 L/RSteering lock unit
communicationInput/
OutputLOCKPress ignition knob with Intelli-
gent Key inside vehicle.
Other than the above 5
33 L/WInside key antenna
(+) signal
(Instrument center
lower)
Output LOCKAny door open → Close (Door
switch: ON → OFF)
Ignition knob switch: ON (press
ignition knob.)
34 R/WInside key antenna (-)
signal
(Instrument center
lower)
37 GROutside key antenna
(passenger side) (+)
Output LOCKPassenger door request switch
operation (Switch: ON)
38 LGOutside key antenna
(passenger side) (-) Te r m i -
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Ignition
Knob
PositionOperation or Conditions
PIIB8449J
SIIA1910J
SIIA1910J

BL-90
INTELLIGENT KEY SYSTEM

Terminals and Reference Value for Steering Lock UnitBIS000X5
Terminals and Reference Value for BCMBIS000X6
Te r m i -
nalWire
ColorSignal DesignationSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Ignition
Knob
PositionOperation or Conditions
1 Y/B Battery power supply Input LOCK — Battery voltage
2L/YSteering lock unit power
supplyOutput LOCK — 5
3L/RSteering lock unit com-
munication signalInput/
OutputLOCKPress ignition knob with
Intelligent Key inside
vehicle.
Other than the above 5
4G/YSteering lock unit
ground—ON — 0
PIIB8449J
Te r m i -
nalWire
ColorItemSignal
Input/
OutputConditionVoltage (V)
(Approx.)
12 R/LFront door switch (Passenger
side)Input Door open (ON) → Close (OFF) 0 → Battery voltage
13 R/B Rear door switch RH Input Door open (ON) → Close (OFF) 0 → Battery voltage
38 R Ignition switch InputIgnition switch is in ON or START posi-
tionBattery voltage
39 L CAN-HInput/
Output——
40 P CAN-LInput/
Output——
42 Y/R Battery power supply (Fuse) Input — Battery voltage
52 B Ground — — 0
55 W/BBattery power supply (Fusible
link)Input — Battery voltage
57 V/W Trunk room lamp switch Input Trunk lid open (ON) → Close (OFF) 0 → Battery voltage
62 SB Front door switch (Driver side) Input Door open (ON) → Close (OFF) 0 → Battery voltage
63 R/W Rear door switch LH Input Door open (ON) → Close (OFF) 0 → Battery voltage

INTELLIGENT KEY SYSTEM
BL-93
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CONSULT-II Functions (INTELLIGENT KEY)BIS001TD
CONSULT-II can display each diagnostic item using the diagnostic test modes as shown below.
CONSULT-II Inspection ProcedureBIS001TE
CAUTION:
If CONSULT-II is used with no connection CONSULT-II CONVERTER, malfunctions might be detected
in self-diagnosis depending on control unit which performs CAN Communication.
BASIC OPERATION
Refer to GI-34, "CONSULT-II Start Procedure" .
CONSULT-II Application ItemsBIS001TF
SELF-DIAGNOSTIC RESULTS
*: It is possible to display it only with the program card for engine immobilizer system.
DATA MONITOR
Part to be diagnosed Test item, Diagnosis mode Description
Intelligent KeyWORK SUPPORT Changes settings for each function.
SELF-DIAG RESULTS Intelligent Key unit performs CAN communication diagnosis.
DATA MONITOR Displays Intelligent Key unit input data in real time.
CAN DIAGNOSTIC SUPPORT
MONITORThe results of transmit/receive diagnosis of CAN Communication can
be read.
ACTIVE TESTOperation of electrical loads can be checked by sending driving signal
to then.
ECU PART NUMBER Displays Intelligent Key unit part No.
DTC Self-diag results Description Diagnosis procedureReference
page
U1000 CAN COMM CIRCUITMalfunction is detected in CAN communica-
tion.Check CAN communica-
tion system.BL-100
U1010 CONTROL UNIT (CAN) Intelligent Key unit internal malfunctionCheck CAN communica-
tion system.BL-100
B2013*STRG COMM CIRCUITMalfunction is detected in communication of
Intelligent Key unit and steering lock unit.Check steering lock unit.BL-115
B2552*INTELLIGENT KEY Intelligent Key unit internal malfunctionReplace Intelligent Key
unit.BL-117
B2590*DISCORD BCM - I-KEY Malfunction is detected in immobilizer system. Check NATS.BL-139
Monitor item Content
PUSH SW Indicates [ON/OFF] condition of ignition knob switch.
KEY SW Indicates [ON/OFF] condition of key switch.
DR REQ SW Indicates [ON/OFF] condition of door request switch (driver side).
AS REQ SW Indicates [ON/OFF] condition of door request switch (passenger side).
BD/TR REQ SW Indicates [ON/OFF] condition of trunk opener request switch.
IGN SW Indicates [ON/OFF] condition of ignition switch in ON position.
ACC SW Indicates [ON/OFF] condition of ignition switch in ACC position.
DOOR STAT SW Indicates [ON/OFF] condition of stop lamp switch.
STOP LAMP SW Indicates [ON/OFF] condition of door unlock sensor.
P RANGE SW* Indicates [ON/OFF] condition of park position switch.
DOOR LOCK SIG* Indicates [ON/OFF] condition of door lock signal from Intelligent Key remote controller button.
DOOR UNLOCK SIG* Indicates [ON/OFF] condition of door unlock signal from Intelligent Key remote controller button.
KEYLESS TRUNK* Indicates [ON/OFF] condition of trunk open signal from Intelligent Key remote controller button.

BL-98
INTELLIGENT KEY SYSTEM

HAZARD REMINDER FUNCTION MALFUNCTION
NOTE:

Before performing the diagnosis in the following table, check “Diagnosis Procedure”. Refer to BL-91,
"Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnoses service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)

Intelligent key function (I-KEY FUNCTION) is ON when setting on CONSULT-II.

Key reminder function (ANSWER BACK FUNCTION) is ON when setting on CONSULT-II.

Mechanical key is not inserted into ignition knob.

Ignition knob is not depressed.

All doors are closed.
ENGINE START FUNCTION MALFUNCTION
Intelligent Key Operation Inspection
NOTE:

Before performing the diagnosis in the following table, check “Diagnosis Procedure”. Refer to BL-91,
"Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnoses service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)

Intelligent key function (I-KEY FUNCTION) is ON when setting on CONSULT-II.

Mechanical key is not inserted into ignition knob.

There is one or more registered Intelligent Key in the detection area of inside key antenna.
Mechanical Key Operation Inspection
NOTE:

Before performing the diagnosis in the following table, check “Diagnosis Procedure”. Refer to BL-91,
"Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.
Symptom Diagnoses service procedure Reference page
Hazard lamps do not flash during door lock
operation using Intelligent Key. (regardless of
whether Intelligent Key remote controller button
or request switch operation is used)1. Check key reminder settingBL-94
2. Replace BCMBCS-16
3. Replace Intelligent Key unitBL-117
Symptom Diagnoses service procedure Reference page
Ignition knob can not turn
This illuminate KEY warning lamp on com-
bination meter in red when ignition knob is
pressed.1. Check inside key antennaBL-114
2. Replace Intelligent Key unitBL-117
This illuminate KEY warning lamp on com-
bination meter in green when ignition knob
is pressed.Check steering lock unitBL-115
Ignition knob turns even without both Intelli-
gent Key and mechanical key.Replace steering lock unit —
This is not illuminate KEY warning lamp on
combination meter when ignition knob is
pressed.1. Check ignition knob switchBL-103
2. Check key switch (Intelligent Key unit input)BL-101
3. Replace Intelligent Key unitBL-117

INTELLIGENT KEY SYSTEM
BL-115
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3. CHECK INSIDE KEY ANTENNA POWER SUPPLY-2
1. Replace inside key antenna.
2. Push ignition knob, and use an oscilloscope to check voltage
wave form between Intelligent key unit connector M31 terminals
13 (trunk room), 15 (center console), and 33 (instrument center
lower) and ground.
OK or NG
OK >> Inside key antenna is malfunctioning.
NG >> Replace Intelligent key unit.
Check Steering Lock UnitBIS000XN
1. CHECK STEERING LOCK UNIT POWER SUPPLY
1. Turn ignition knob to LOCK position.
2. Disconnect steering lock unit connector.
3. Check voltage between steering lock unit connector M21 terminal 1 (Y/B) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace steering lock unit power supply circuit.
2. CHECK STEERING LOCK UNIT GROUND CIRCUIT
Check continuity between steering lock unit connector M21 terminal 4 (G/Y) and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
Push each door request switch.
Trunk room:
13 (V/W) - Ground
Center console:
15 (R/Y) - Ground
Instrument center lower:
33 (L/W) - Ground
PIIB8801E
SIIA1910J
1 (Y/B) - Ground : Battery voltage
PIIA6797E
4 (G/Y) - Ground : Continuity should exist.
PIIA6798E

BL-116
INTELLIGENT KEY SYSTEM

3. CHECK STEERING LOCK COMMUNICATION CIRCUIT
1. Connect steering lock unit connector.
2. Check voltage between Intelligent Key unit connector M31 terminal 1 (L/Y) and ground.
3. Immediately after pushing ignition knob, use an oscilloscope to check voltage waveform between Intelli-
gent Key unit connector M31 terminal 32 (L/R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace Intelligent Key unit.
4. CHECK STEERING LOCK UNIT COMMUNICATION CIRCUIT
1. Disconnect Intelligent Key unit and steering lock unit connectors.
2. Check continuity between Intelligent Key unit connector M31 terminals 1, 31, 32 and steering lock unit
connector M21 terminals 2, 3, 4.
3. Check continuity between steering lock unit connector M26 ter-
minals 2, 3, 4 and ground.
OK or NG
OK >> Replace steering lock unit.

After replacing steering lock unit, perform registration procedure. Refer to “CONSULT-II Opera-
tion Manual NATS”.
NG >> Repair or replace harness between steering lock unit and Intelligent Key unit.1 (L/Y) - Ground : Approx. 5V
MIIB0385E
ConnectorTerminal
(Wire color)Signal (V)
(Approx.)
(+) (–)
M31 32 (L/R) Ground
MIIB0386EPIIB8449J
1 (L/Y) - 2 (L/Y) : Continuity should exist.
31 (G/Y) - 4 (G/Y) : Continuity should exist.
32 (L/R) - 3 (L/R) : Continuity should exist.
2 (L/Y) - Ground : Continuity should not exist.
3 (L/R) - Ground : Continuity should not exist.
4 (G/Y) - Ground : Continuity should not exist.
PIIA6799E

NATS(NISSAN ANTI-THEFT SYSTEM)
BL-141
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SECURITY INDICATOR

Warns that the vehicle has NATS.

In the vehicle without Intelligent Key system, security indicator always flashes with other than ignition
switch ON or START position. In the vehicle with Intelligent Key system, security indicator always flashes
with mechanical key removed condition (key switch OFF) and ignition knob released condition on LOCK
position (ignition knob switch OFF).
NOTE:
Because security indicator is highly efficient, the battery is barely affected.
Condition of Security Indicator
WITHOUT INTELLIGENT KEY SYSTEM
WITH INTELLIGENT KEY SYSTEM

In ignition knob operation with Intelligent Key, it always turns off with pushing ignition knob, and always
flashes with ignition knob released (ignition knob switch OFF) condition on ignition knob “LOCK” position.

In ignition knob operation with mechanical key, it turns off on the condition that mechanical key is inserted
in key cylinder, and always flashes with ignition knob released (ignition knob switch OFF) condition on
mechanical key removed condition.
System CompositionBIS000YD
The immobilizer function of the NATS consists of the following:

Ignition key (models without Intelligent Key system)

Mechanical key (models with Intelligent Key system)

NATS antenna amp.

Steering lock unit. (models with Intelligent Key system)

BCM

Intelligent Key unit (models with Intelligent Key system)

Engine control module (ECM)

Security indicator
Security indicator
conditionIgnition keyOperation or condition of ignition key
Ignition switch:
ON positionIgnition switch:
ACC positionIgnition switch:
OFF position
(Key is inserted.)Ignition switch:
OFF position
(Remove key.)
Register key OFF Flashing Flashing Flashing
Ignition key not
registeredON Flashing Flashing Flashing