heating NISSAN TEANA 2003 User Guide

PRECAUTIONS
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[VQ]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS004WR
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.
Precautions for Liquid GasketBBS004WS
REMOVAL OF LIQUID GASKET SEALING

After removing mounting nuts and bolts, separate the mating
surface using seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.

Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
3. Attach liquid gasket tube to tube presser (SST).
Use Genuine Liquid Gasket or equivalent.
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.

If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.
PBIC0275E
PBIC0003E
PBIC2160E

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OVERHEATING CAUSE ANALYSIS

OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartBBS004WV
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
Fan assembly — High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant viscosity —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration

OVERHEATING CAUSE ANALYSIS
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Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system mal-
function
— Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or
paper clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

CVT-192
CVT FLUID COOLER SYSTEM

INSTALLATION
Note the following, and install in the reverse order of removal.

After completing installation, check for engine coolant leakage, engine coolant level, and the positions of
CVT. Refer to CO-34, "
Inspection" and CVT-179, "Checking of CVT Position" .
CAUTION:

Install hose clamp with tabs aligned with markings of CVT fluid cooler valve assembly and each
hose.

Do not reuse CVT fluid cooler inlet tube assembly and CVT fluid cooler outlet tube assembly.

Apply LLC around O-ring when installing CVT fluid cooler inlet tube and CVT fluid cooler outlet
tube assembly to CVT fluid cooler valve assembly.
COMPONENT INSPECTION
1. Make sure that CVT fluid cooler valve is fully opened at room
temperature.
2. Put CVT fluid cooler valve into a water-filled container, and then
heat it up to 82°C (180°F) or more for 10 minutes or more.
3. Make sure that CVT fluid cooler valve is fully closed.Standard
Dimension A from CVT fluid cooler valve port end
to tip of valve shaft
(At room temperature):
Approx 72.0 mm (2.835 in) or more
SCIA7399E
SCIA2710E
Standard
Dimension A from CVT fluid cooler valve port end
to tip of valve shaft
[When heating to 82°C (180°F) or more for 10 min-
utes or more]:
Approx 66.5 mm (2.618 in) or less
SCIA7399E

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On Board Diagnosis Logic ................................... 193
DTC Confirmation Procedure ............................... 193
Wiring Diagram .................................................... 194
Diagnostic Procedure ........................................... 195
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ 197
Component Description ........................................ 197
On Board Diagnosis Logic ................................... 197
DTC Confirmation Procedure ............................... 197
Diagnostic Procedure ........................................... 198
Removal and Installation ...................................... 199
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................. 200
Description ........................................................... 200
On Board Diagnosis Logic ................................... 200
DTC Confirmation Procedure ............................... 200
Wiring Diagram .................................................... 201
Diagnostic Procedure ........................................... 202
Component Inspection ......................................... 206
Removal and Installation ...................................... 206
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .................................................................... 207
Component Description ........................................ 207
CONSULT-II Reference Value in Data Monitor Mode
. 207
On Board Diagnosis Logic ................................... 207
DTC Confirmation Procedure ............................... 207
Wiring Diagram .................................................... 209
Diagnostic Procedure ........................................... 210
DTC P1128 THROTTLE CONTROL MOTOR ........ 213
Component Description ........................................ 213
On Board Diagnosis Logic ................................... 213
DTC Confirmation Procedure ............................... 213
Wiring Diagram .................................................... 214
Diagnostic Procedure ........................................... 215
Component Inspection ......................................... 216
Removal and Installation ...................................... 217
DTC P1217 ENGINE OVER TEMPERATURE ....... 218
System Description .............................................. 218
CONSULT-II Reference Value in Data Monitor Mode
. 219
On Board Diagnosis Logic ................................... 219
Overall Function Check ........................................ 220
Wiring Diagram .................................................... 222
Diagnostic Procedure ........................................... 224
Main 12 Causes of Overheating ........................... 227
Component Inspection ......................................... 228
DTC P1225 TP SENSOR ........................................ 229
Component Description ........................................ 229
On Board Diagnosis Logic ................................... 229
DTC Confirmation Procedure ............................... 229
Diagnostic Procedure ........................................... 230
Removal and Installation ...................................... 230
DTC P1226 TP SENSOR ........................................ 231
Component Description ........................................ 231
On Board Diagnosis Logic ................................... 231
DTC Confirmation Procedure ............................... 231
Diagnostic Procedure ........................................... 232
Removal and Installation ...................................... 232DTC P1229 SENSOR POWER SUPPLY ................233
On Board Diagnosis Logic ....................................233
DTC Confirmation Procedure ...............................233
Wiring Diagram .....................................................234
Diagnostic Procedure ...........................................236
DTC P1706 PNP SWITCH ......................................238
Component Description ........................................238
CONSULT-II Reference Value in Data Monitor Mode
.238
On Board Diagnosis Logic ....................................238
Overall Function Check ........................................238
Wiring Diagram .....................................................239
Diagnostic Procedure ...........................................240
DTC P1720 VSS ......................................................243
Description ............................................................243
CONSULT-II Reference Value in Data Monitor Mode
.243
On Board Diagnosis Logic ....................................243
DTC Confirmation Procedure ...............................243
Diagnostic Procedure ...........................................244
DTC P1805 BRAKE SWITCH .................................245
Description ............................................................245
CONSULT-II Reference Value in Data Monitor Mode
.245
On Board Diagnosis Logic ....................................245
DTC Confirmation Procedure ...............................245
Wiring Diagram .....................................................247
Diagnostic Procedure ...........................................248
Component Inspection ..........................................250
DTC P2122, P2123 APP SENSOR .........................251
Component Description ........................................251
CONSULT-II Reference Value in Data Monitor Mode
.251
On Board Diagnosis Logic ....................................251
DTC Confirmation Procedure ...............................252
Wiring Diagram .....................................................253
Diagnostic Procedure ...........................................254
Component Inspection ..........................................256
Removal and Installation ......................................257
DTC P2127, P2128 APP SENSOR .........................258
Component Description ........................................258
CONSULT-II Reference Value in Data Monitor Mode
.258
On Board Diagnosis Logic ....................................258
DTC Confirmation Procedure ...............................259
Wiring Diagram .....................................................260
Diagnostic Procedure ...........................................261
Component Inspection ..........................................264
Removal and Installation ......................................264
DTC P2135 TP SENSOR ........................................265
Component Description ........................................265
CONSULT-II Reference Value in Data Monitor Mode
.265
On Board Diagnosis Logic ....................................265
DTC Confirmation Procedure ...............................266
Wiring Diagram .....................................................267
Diagnostic Procedure ...........................................268
Component Inspection ..........................................271
Removal and Installation ......................................271

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DTC P1212 TCS COMMUNICATION LINE ............ 574
Description ........................................................... 574
On Board Diagnosis Logic ................................... 574
DTC Confirmation Procedure ............................... 574
Diagnostic Procedure ........................................... 574
DTC P1217 ENGINE OVER TEMPERATURE ....... 575
System Description .............................................. 575
CONSULT-II Reference Value in Data Monitor Mode
. 576
On Board Diagnosis Logic ................................... 577
Overall Function Check ........................................ 577
Wiring Diagram .................................................... 579
Diagnostic Procedure ........................................... 581
Main 12 Causes of Overheating ........................... 584
Component Inspection ......................................... 585
DTC P1225 TP SENSOR ........................................ 586
Component Description ........................................ 586
On Board Diagnosis Logic ................................... 586
DTC Confirmation Procedure ............................... 586
Diagnostic Procedure ........................................... 587
Removal and Installation ...................................... 587
DTC P1226 TP SENSOR ........................................ 588
Component Description ........................................ 588
On Board Diagnosis Logic ................................... 588
DTC Confirmation Procedure ............................... 588
Diagnostic Procedure ........................................... 589
Removal and Installation ...................................... 589
DTC P1229 SENSOR POWER SUPPLY ................ 590
On Board Diagnosis Logic ................................... 590
DTC Confirmation Procedure ............................... 590
Wiring Diagram .................................................... 591
Diagnostic Procedure ........................................... 592
DTC P1564 ASCD STEERING SWITCH ................ 595
Component Description ........................................ 595
CONSULT-II Reference Value in Data Monitor Mode
. 595
On Board Diagnosis Logic ................................... 595
DTC Confirmation Procedure ............................... 596
Wiring Diagram .................................................... 597
Diagnostic Procedure ........................................... 598
Component Inspection ......................................... 601
DTC P1572 ASCD BRAKE SWITCH ..................... 602
Component Description ........................................ 602
CONSULT-II Reference Value in Data Monitor Mode
. 602
On Board Diagnosis Logic ................................... 602
DTC Confirmation Procedure ............................... 603
Overall Function Check ........................................ 604
Wiring Diagram .................................................... 605
Diagnostic Procedure ........................................... 606
Component Inspection ......................................... 610
DTC P1574 ASCD VEHICLE SPEED SENSOR .....611
Component Description ......................................... 611
On Board Diagnosis Logic .................................... 611
DTC Confirmation Procedure ................................ 611
Diagnostic Procedure ........................................... 612
DTC P1700 CVT CONTROL SYSTEM ................... 613
Description ........................................................... 613DTC P1706 PNP SWITCH ......................................614
Component Description ........................................614
CONSULT-II Reference Value in Data Monitor Mode
.614
On Board Diagnosis Logic ....................................614
Overall Function Check ........................................614
Wiring Diagram .....................................................615
Diagnostic Procedure ...........................................618
DTC P1715 INPUT SPEED SENSOR (PRIMARY
SPEED SENSOR) ...................................................622
Description ............................................................622
CONSULT-II Reference Value in Data Monitor Mode
.622
On Board Diagnosis Logic ....................................622
DTC Confirmation Procedure ...............................622
Diagnostic Procedure ...........................................623
DTC P1720 VSS ......................................................624
Description ............................................................624
CONSULT-II Reference Value in Data Monitor Mode
.624
On Board Diagnosis Logic ....................................624
DTC Confirmation Procedure ...............................624
Diagnostic Procedure ...........................................625
DTC P1805 BRAKE SWITCH .................................626
Description ............................................................626
CONSULT-II Reference Value in Data Monitor Mode
.626
On Board Diagnosis Logic ....................................626
DTC Confirmation Procedure ...............................626
Wiring Diagram .....................................................627
Diagnostic Procedure ...........................................628
Component Inspection ..........................................630
DTC P2122, P2123 APP SENSOR .........................631
Component Description ........................................631
CONSULT-II Reference Value in Data Monitor Mode
.631
On Board Diagnosis Logic ....................................631
DTC Confirmation Procedure ...............................632
Wiring Diagram .....................................................633
Diagnostic Procedure ...........................................634
Component Inspection ..........................................637
Removal and Installation ......................................637
DTC P2127, P2128 APP SENSOR .........................638
Component Description ........................................638
CONSULT-II Reference Value in Data Monitor Mode
.638
On Board Diagnosis Logic ....................................638
DTC Confirmation Procedure ...............................639
Wiring Diagram .....................................................640
Diagnostic Procedure ...........................................641
Component Inspection ..........................................644
Removal and Installation ......................................644
DTC P2135 TP SENSOR ........................................645
Component Description ........................................645
CONSULT-II Reference Value in Data Monitor Mode
.645
On Board Diagnosis Logic ....................................645
DTC Confirmation Procedure ...............................646
Wiring Diagram .....................................................647

EC-220
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DTC P1217 ENGINE OVER TEMPERATURE

CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-10, "
Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-9, "Changing Engine Oil" .
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-15, "
Anti-Freeze Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckBBS005GA
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-224,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-224,
"Diagnostic Procedure" .
3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go to EC-224, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)

Cooling fan does not operate properly (Over-
heat).

Cooling fan system does not operate prop-
erly (Overheat).

Engine coolant was not added to the system
using the proper filling method.

Engine coolant is not within the specified
range.

Harness or connectors
(The cooling fan circuit is open or
shorted.)

IPDM E/R

Cooling fan

Radiator hose

Radiator

Radiator cap

Water pump

Thermostat
For more information, refer to EC-227,
"Main 12 Causes of Overheating" .
SEF621W
SEF646X

DTC P1217 ENGINE OVER TEMPERATURE
EC-225
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5. CHECK COMPONENT PARTS
Check the following.

Radiator cap (Refer to CO-14, "Checking Radiator Cap" .)

Thermostat (Refer to CO-24, "THERMOSTAT AND WATER CONTROL VALVE" .)

Engine coolant temperature sensor (Refer to EC-135, "Component Inspection" .)
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning component.
6. CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to EC-227, "
Main 12 Causes of Overheating" .
>>INSPECTION END
CHECK COOLING FAN CONTROL CIRCUIT
1. CHECK COOLILNG FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors E6.
3. Check voltage between IPDM E/R terminal 15 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

40A fusible link

Harness for open or short between IPDM E/R and battery
>> Repair open circuit or short to ground in harness or connectors.
3. CHECK COOLING FAN GROUND CIRCUIT
1. Disconnect IPDM E/R harness connectors E8, E9.
2. Check harness continuity between IPDM E/R terminal 16, 38, 60 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or connectors.Voltage: Battery voltage
PBIB1681E
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-227
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7. CHECK COOLING FAN MOTOR-2 CIRCUIT-I
1. Disconnect cooling fan motor-2 harness connector.
2. Check harness continuity between cooling fan motor-2 terminals
3, 4 and ground.
Refer to Wiring diagram.
3. Also check harness short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to power in harness or con-
nectors.
8. CHECK COOLING FAN MOTOR-2 CIRCUIT-II
1. Check harness continuity between cooling fan motor-2 terminal 1 and IPDM E/R terminal 13, cooling fan
motor-2 terminal 2 and IPDM E/R terminals 10, 14.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK COOLING FAN MOTORS
Refer to EC-228, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace cooling fan motors.
10. CHECK INTERMITTENT INCIDENT
Perform EC-105, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connector.
Main 12 Causes of OverheatingBBS005GD
Continuity should exist.
PBIB2130E
Continuity should exist.
Engine Step Inspection item Equipment Standard Reference page
OFF 1

Blocked radiator

Blocked condenser

Blocked radiator grille

Blocked bumper

Visual No blocking —
2

Coolant mixture
Coolant tester 50 - 50% coolant mixture See MA-15 .
3

Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckSee CO-10 .
4

Radiator cap
Pressure tester 59 - 98 kPa
(0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2 , 9 - 14 psi) (Limit)See CO-14
.
ON*
25
Coolant leaks
Visual No leaks See CO-10 .

EC-228
[QR]
DTC P1217 ENGINE OVER TEMPERATURE

*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-6, "
OVERHEATING CAUSE ANALYSIS" .
Component InspectionBBS005GE
COOLING FAN MOTOR-1 AND -2
1. Disconnect cooling fan motor harness connector.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
ON*26
Thermostat
Touch the upper and
lower radiator hosesBoth hoses should be hot See CO-24 , and CO-13 .
ON*
17
Cooling fan
CONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-218
).
OFF 8

Combustion gas leak
Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39
Coolant temperature
gauge
Visual Gauge less than 3/4
when driving—

Coolant overflow to
reservoir tank
Visual No overflow during driving
and idlingSee CO-10 .
OFF*
410
Coolant return from
reservoir tank to radia-
tor
Visual Should be initial level in
reservoir tankSee CO-10 .
OFF 11

Cylinder head
Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See EM-65 .
12

Cylinder block and pis-
tons
Visual No scuffing on cylinder
walls or pistonSee EM-81 . Engine Step Inspection item Equipment Standard Reference page
Cooling fan speedCooling fan motor terminals
(+) (−)
Middle (MID)1 3 and 4
2 3 and 4
1 and 2 3
1 and 2 4
High (HI) 1 and 2 3 and 4
SEF734W