ECU NISSAN TEANA 2003 Service Manual

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. Rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

AUTOMATIC DRIVE POSITIONER
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5. CHECK POWER SUPPLY CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Disconnect driver seat control unit connector.
2. Check voltage between driver seat control unit and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness between driver seat control
unit and fuse block (J/B).
6. CHECK GROUND CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Turn ignition switch OFF.
2. Check continuity between the driver seat control unit connector
B117, B118 terminal 34, 23 and ground.
OK or NG
OK >> Driver seat control unit circuit is OK.
NG >> Repair or replace harness between driver seat control
unit and ground.
CONSULT-II Function (AUTO DRIVE POS.)BIS0012Q
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
*1: For setting automatic drive positioner functions only.
*2: During vehicle driving, do not perform active test.
CONSULT-II OPERATION
Refer to GI-34, "CONSULT-II Start Procedure" .
SELF-DIAGNOSIS RESULTS
Display Item List
Refer to SE-3, "INDEX FOR DTC" .
ConnectorTerminals (Wire color)
Ignition
switchVoltage (V)
(Approx.)
(+) (–)
B117 3 (G)
GroundSTART
Battery voltage
B11824 (B/R)
OFF
30 (R/L)
PIIB2027E
34 (B) – Ground : Continuity should exist.
23 (B) – Ground : Continuity should exist.
PIIB2028E
CONSULT-II
diagnosis
itemsInspection item,
self-diagnosis modeContentReference
page
AUTO DRIVE
POSITIONERWORK SUPPORT*
1Changes the setting for each function.SE-31
SELF–DIG RESULTS Check the self-diagnosis results.SE-3
DATA MONITORSelection from
menuDisplays the input data to driver seat control unit and automatic
driving positioned control unit on real-time basis.SE-34
CAN DIAGNOSTIC SUPPORT
MONITORThe results of transmit / receive diagnosis of CAN communication
can be readLAN-44
ACTIVE TEST*2Gives a drive signal to a load to check the operation.SE-34
ECU PART NUMBER Displays driver seat control unit part No. —
BCM DATA MONITORSelection from
menuDisplays the input data to BCM on real-time basisBL-30

FRONT SEAT
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Removal and InstallationBIS0014E
REMOVAL
CAUTION:

Before removing the front seat, turn the ignition switch off, disconnect both battery cables and
wait and least 3 minutes.

When checking the power seat circuit for continuity using a circuit tester, do not confuse its con-
nector with the side air bag module connector. Such an error may cause the air bag to deploy.

Do not drop, tilt, or bump the side air bag module installing in the seat. Always handle it with care.
1. Remove front leg cover and rear leg cover (LH/RH).
2. Remove bolts.
NOTE:
Set seat sliding and seat reclining to center position when disassembling power seat after removing bolts.
Set seat lifter to top position when disassembling.
3. Disconnect side air bag module connector and power seat harness connector under the seat and remove
harness securing clips.
CAUTION:
Before removal, be sure to turn ignition switch OFF, disconnect both battery cables, and then wait
for at least 3 minutes.
4. Remove seat from the vehicle.
CAUTION:
When removing and installing, use shop cloths to protect parts from damage.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
Before installation, be sure to turn ignition switch OFF, disconnect both battery cables, and then wait
for at least 3 minutes.
Disassembly and Assembly of Seatback (Manual and Power Seat)BIS0014F
DISASSEMBLY
1. Remove screw caps from back of seatback, and then remove
screws.
PIIA6232E
PIIA6307E

SRS-2 FRONT SEAT BELT PRE-TENSIONER ................... 46
Removal and Installation ........................................ 46
DIAGNOSIS SENSOR UNIT ..................................... 47
Removal and Installation ........................................ 47
REMOVAL ........................................................... 47
INSTALLATION .................................................... 47
ECU DISCRIMINATED NO. ................................. 47
DISPOSAL OF AIR BAG MODULE AND SEAT BELT
PRE-TENSIONER ..................................................... 48
Caution for Air Bag Module and Seat Belt Pre-Ten-
sioner ...................................................................... 48
CHECKING DEPLOYMENT TOOL ..................... 48
DEPLOYMENT PROCEDURES FOR AIR BAG
MODULE (OUTSIDE OF VEHICLE) ................... 49
DEPLOYMENT PROCEDURES FOR SEAT
BELT PRE-TENSIONER (OUTSIDE OF VEHI-CLE) ..................................................................... 53
DEPLOYMENT OF AIR BAG MODULE AND
SEAT BELT PRE-TENSIONER WHILE
MOUNTED IN VEHICLE ...................................... 54
DISPOSING OF AIR BAG MODULE AND SEAT
BELT PRE-TENSIONER ...................................... 54
COLLISION DIAGNOSIS .......................................... 55
For Frontal Collision ................................................ 55
SRS INSPECTION (FOR FRONTAL COLLI-
SION) ................................................................... 55
For Side Collision .................................................... 57
WHEN THE SIDE AIR BAG IS ACTIVATED IN A
SIDE COLLISION: ............................................... 57
WHEN SRS IS NOT ACTIVATED IN A SIDE COL-
LISION: ................................................................ 57
SRS INSPECTION (FOR SIDE COLLISION) ...... 57

SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

Front Seat Belt Pre-Tensioner with 2 Stage Load LimiterBHS00040
The seat belt pre-tensioner system with 2 stage load limiter is
installed for both the driver's seat and the front passenger's seat. It
operates simultaneously with the SRS air bag system in the event of
a frontal collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the 2
stage load limiter permits the specified extension of the seat belt by
the twisting of the ELR shaft, and a relaxation of the chest-area seat
belt webbing tension while maintaining force.
Front Side Air BagBHS00041
Front side air bag is built-in type.
The front seatbacks with built-in type side air bag have the labels as
shown.
Side Curtain Air BagBHS00042
The side curtain air bags have the labels as shown.
PHIA0113E
PHIA0590E
BF-2006D

SRS-14
TROUBLE DIAGNOSIS

CONSULT-II FunctionBHS00047
DIAGNOSIS MODE FOR CONSULT-II

“SELF-DIAG [CURRENT]”
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.

“SELF-DIAG [PAST]”
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.

“TROUBLE DIAG RECORD”
With TROUBLE DIAG RECORD, diagnostic results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.

“ECU DISCRIMINATED NO.”
The diagnosis sensor unit for each vehicle model is assigned
with its own, individual classification number. This number is dis-
played on the CONSULT-II screen, as shown. When replacing
the diagnosis sensor unit, refer to the part number for the com-
patibility. After installation, replacement with a correct unit can
be checked by confirming this classification number on the
CONSULT-II screen.
After repair, make sure the discriminated number of diagnosis
sensor unit installed to vehicle are same. Refer to SRS-47,
"ECU DISCRIMINATED NO." .
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears. Then diagnosis mode automatically changes to User mode.
PHIA0218E
SRS803
SRS804

SRS-38
SPIRAL CABLE

7. Disconnect the horn switch connector and spiral cable connec-
tor.
NOTE:
Disconnect the horn switch connector, and then the spiral cable
connector.
CAUTION:
Do not tap or bump the steering wheel.
8. Loosen screws. While pushing upper plastic tab, remove spiral cable.
INSTALLATION
Install in the reverse order of removal.
CAUTION:

If it is mounted in the inappropriate position, spiral cable
may be cut when performing steering operation.

Also, with the steering linkage disconnected the cable may
snap by turning the steering wheel beyond the limited num-
ber of turns. The spiral cable can be turned counterclock-
wise about 2.5 turns from the right end position.

Do not twist spiral cable freely or excessively after it
becomes tight (doing so may cause the cable to be torn
off).

Secure air bag harness to the harness fixing hook.

Check SRS air bag warning lamp to make sure that the sys-
tem works normally after finishing work.

If SRS air bag warning lamp indicates a DTC exists, reset
with self-diagnosis and erase the memory using CONSULT-
II.

After the operation above, if SRS air bag warning lamp still
shows a non-standard condition, perform system trouble
diagnosis again, and repair or replace the indicated compo-
nent. Refer to SRS-16, "
SRS Operation Check" .
SHIA0193E
PHIA0599E

DIAGNOSIS SENSOR UNIT
SRS-47
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SRS

DIAGNOSIS SENSOR UNITPFP:28556
Removal and InstallationBHS0004M
REMOVAL
CAUTION:
Before servicing SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
1. Disconnect each harness connector for the air bag module and seat belt pre-tensioner.
2. Remove A/T selector lever knob. Refer to IP-12, "
(C) A/T Selector Lever Knob" .
3. Remove A/T console finisher. Refer to IP-12, "
(D) A/T Console Finisher" .
4. Remove ashtray. Refer to IP-12, "
(F) Front Ashtray" .
5. Remove instrument panel lower cover (LH/RH). Refer to IP-13, "
(G) Instrument Panel Lower Cover (LH/
RH)" .
6. Remove instrument panel stay cover. Refer to IP-13, "
(H) Instrument Panel Stay Cover" .
7. Remove console rear cover. Refer to IP-13, "
(I) Console Rear Cover" .
8. Remove center console. Refer to IP-14, "
(J) Center Console" .
9. Disconnect diagnosis sensor unit connector.
10. Remove fixing bolts and ground bolt from the diagnosis sensor
unit.
CAUTION:

Do not use old bolts. Replace with new ones.

Check diagnosis sensor unit bracket to ensure that it is free
of deformation, dents, cracks or rust. If it shows any visible
things of damage, replace with new one.

Replace diagnosis sensor unit if it has been dropped or sustained an impact.
INSTALLATION
Install in the reverse order of removal.
CAUTION:

Check the diagnosis sensor unit for proper installation.

After replacement of diagnosis sensor unit, perform self-diagnosis to make sure that no malfunc-
tion is detected. Refer to SRS-16, "
SRS Operation Check" .
ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the
vehicle as equipped.Ground bolt : 6.9 N·m (0.70 kg-m, 61 in-lb)
Fixing bolt : 24.5 N·m (2.5 kg-m, 18 ft-lb)
PHIA1342E
Specification ECU DISCRIMINATED No.
Models with driver and passenger air bags, seat belt pre-tensioner AA90
Models with driver and passenger air bags, seat belt pre-tensioner, side air bags and curtain air bags AA8C

DISPOSAL OF AIR BAG MODULE AND SEAT BELT PRE-TENSIONER
SRS-49
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SRS

Air Bag Deployment Tool Lamp Illumination Chart (Battery Connected)
*: If this lamp glows red, the tool is connected to the battery incorrectly. Reverse the connections and make sure the lamp glows green.
DEPLOYMENT PROCEDURES FOR AIR BAG MODULE (OUTSIDE OF VEHICLE)
Unless the vehicle is being scrapped, deploying the air bag in the
vehicle is not recommended. This may cause damage to the vehicle
interior.
Anchor air bag module bracket (SST: KV99105300) in a vise
secured to a firm foundation during deployment.
Deployment of Driver Air Bag Module (Outside of Vehicle)
1. Using wire, secure air bag module to air bag module bracket
(SST: KV99105300) at two places.
CAUTION:
Use wire of at least 1 mm (0.04 in) diameter.
2. Firmly secure air bag module bracket (SST: KV99105300) with
air bag module attached, in a vise.
3. Connect deployment tool adapter (SST: KV99109700) to air bag
module connector and deployment tool connector (SST:
KV99106400).
4. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
5. The lamp on the right side of the tool, marked “deployment tool
power”, should glow green, not red.
6. Press the button on the deployment tool. The left side lamp on
the tool, marked “air bag connector voltage”, will illuminate and
the air bag module will deploy.
CAUTION:
When deploying the driver air bag module, stand at least 5 m
(16 ft) away from the air bag module.
Switch operationLeft side lamp, green*
“AIR BAG CONNECTOR
VOLTAGE”Right side lamp, green*
“DEPLOYMENT TOOL
POWER”
OFF OFF ON
ON ON ON
SRS232-E
PHIA0608E
SRS020-A

SRS-50
DISPOSAL OF AIR BAG MODULE AND SEAT BELT PRE-TENSIONER

Deployment of Front Passenger Air Bag Module (Outside of Vehicle)
1. Firmly secure air bag module bracket (SST: KV99105300) in a
vise.
2. Match the hole in air bag module bracket (held in vise) and front
passenger air bag module and fix them with one bolt [M8 × 25 -
30 mm (0.98 - 1.18 in)].
CAUTION:
If a gap exists between front passenger air bag module and
air bag module bracket, use a piece of wooden block
inserted in the gap to stabilize the air bag module.
3. Connect deployment tool (SST: KV99106400) and deployment
tool adapter (SST: KV99108300) to front passenger air bag
module connector.
4. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
5. The lamp on the right side of the tool, marked “deployment tool
power”, should glow green, not red.
6. Press the button on the deployment tool. The left side lamp on
the tool, marked “air bag connector voltage”, will illuminate and
the air bag module will deploy.
CAUTION:

When deploying the front passenger air bag module, do not
stand on the deploying side.

Stand at least 5 m (16 ft) away from the air bag module.
SRS232-E
PHIA0609E
PHIA0610E
SRS020-A