belt NISSAN TEANA 2003 Owner's Manual

PRECAUTIONS
BR-3
C
D
E
G
H
I
J
K
L
MA
B
BR

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BFS000BB
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 Brake SystemBFS000BC

Clean dust on front brake and rear brake with a vacuum dust collector. Do not blow with compressed air.

Recommended fluid is brake fluid “DOT 3 or DOT 4”. Refer to MA-14, "Fluids and Lubricants" .

Do not reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed
on painted surfaces of body, immediately wipe it off and them wash it away with water immediately.

To clean or wash all parts of master cylinder, disc brake caliper, use clean brake fluid.

Do not use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.

Use a flare nut torque wrench when installing brake tube.

When installing brake tube, be sure to check torque.

Before working, turn ignition switch OFF and disconnect electri-
cal connector of ABS actuator and electric unit (control unit) or
battery cables.

Burnish the brake contact surfaces after refinishing or replacing
rotors, after replacing pads, or if a soft pedal occurs at very low
mileage. Refer to BR-32, "
BRAKE BURNISHING PROCE-
DURE" (Front disc brake), BR-39, "BRAKE BURNISHING
PROCEDURE" (Rear disc brake).
WARNING:

Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
SBR820BA

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D
E
G
H
I
J
K
L
M
SECTION BRC
A
B
BRC

BRAKE CONTROL SYSTEM
ABS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Brake System .................................. 3
Precautions for Brake Control .................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
SYSTEM DESCRIPTION ............................................ 5
System Diagram ....................................................... 5
Functions .................................................................. 5
ABS ....................................................................... 5
EBD ....................................................................... 6
Fail-Safe Function .................................................... 6
ABS, EBD SYSTEM .............................................. 6
Hydraulic Circuit Diagram ........................................ 6
CAN Communication ................................................ 7
SYSTEM DESCRIPTION ...................................... 7
TROUBLE DIAGNOSIS .............................................. 8
How to Perform Trouble Diagnosis For Quick and
Accurate Repair ....................................................... 8
INTRODUCTION ................................................... 8
DIAGNOSIS FLOW CHART ................................. 9
ASKING COMPLAINTS ...................................... 10
EXAMPLE OF DIAGNOSIS SHEET ................... 10
Component Parts Location ...................................... 11
Schematic .............................................................. 12
Wiring Diagram — ABS — ..................................... 13
Control Unit Input/Output Signal Specifications ..... 16
REFERENCE VALUE FROM CONSULT-II ......... 16
CONSULT-II Functions (ABS) ................................ 17
CONSULT-II MAIN FUNCTION ........................... 17
CONSULT-II SETTING PROCEDURE ................ 17
Self-Diagnosis ........................................................ 17
DESCRIPTION .................................................... 17
OPERATION PROCEDURE ............................... 17
ERASE MEMORY ............................................... 17
DISPLAY ITEM LIST ........................................... 18Data Monitor ........................................................... 19
OPERATION PROCEDURE ................................ 19
DISPLAY ITEM LIST ........................................... 19
Active Test .............................................................. 20
OPERATION PROCEDURE ................................ 20
TEST ITEM .......................................................... 21
For Fast and Accurate Diagnosis ........................... 22
PRECAUTIONS FOR DIAGNOSIS ..................... 22
Basic Inspection ..................................................... 22
BRAKE FLUID LEVEL, LEAKAGE AND BRAKE
PAD ..................................................................... 22
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY ......................................... 22
INSPECTION OF ABS WARNING LAMP AND
BRAKE WARNING LAMP ................................... 23
TROUBLE DIAGNOSIS FOR SYSTEM .................... 24
Wheel Sensor System ............................................ 24
ABS Actuator and Electric Unit (Control Unit) 1 ..... 26
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground Circuit ..................................... 26
ABS Actuator Relay or ABS Motor Relay Power Sys-
tem .......................................................................... 28
CAN Communication System ................................. 29
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 30
Excessive ABS Function Operation Frequency ...... 30
Unexpected Pedal Action ....................................... 30
Longer Stopping Distance ...................................... 31
ABS Function Does Not Operate ............................ 31
Pedal Vibration and ABS Operation Sound Occurs ... 31
WHEEL SENSORS ................................................... 33
Removal and Installation ........................................ 33
COMPONENTS ................................................... 33
REMOVAL ........................................................... 33
INSTALLATION ................................................... 33
SENSOR ROTOR ..................................................... 34
Removal and Installation ........................................ 34
FRONT ................................................................ 34
REAR .................................................................. 34

BRC-2 ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 35
Removal and Installation ........................................ 35
COMPONENTS ................................................... 35
REMOVAL ........................................................... 36
INSTALLATION .................................................... 36
VDC/TCS/ABS
PRECAUTIONS ......................................................... 37
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 37
Precautions for Brake System ................................ 37
Precautions for Brake Control ................................ 37
PREPARATION ......................................................... 39
Special Service Tools ............................................. 39
ON-VEHICLE SERVICE ............................................ 40
Adjustment of Steering Angle Sensor Neutral Posi-
tion .......................................................................... 40
OPERATION PROCEDURE ................................ 40
SYSTEM DESCRIPTION .......................................... 41
System Diagram ..................................................... 41
Functions ................................................................ 41
VDC ..................................................................... 41
TCS ..................................................................... 41
ABS ..................................................................... 42
EBD ..................................................................... 42
Fail-Safe Function .................................................. 42
VDC/TCS SYSTEM ............................................. 42
ABS, EBD SYSTEM ............................................ 42
Hydraulic Circuit Diagram ....................................... 43
CAN Communication .............................................. 43
SYSTEM DESCRIPTION .................................... 43
TROUBLE DIAGNOSIS ............................................ 44
How to Perform Trouble Diagnosis Quick and Accu-
rate Repair .............................................................. 44
INTRODUCTION ................................................. 44
DIAGNOSIS FLOW CHART ................................ 45
ASKING COMPLAINTS ....................................... 46
EXAMPLE OF DIAGNOSIS SHEET .................... 46
Component Parts Location ..................................... 47
Schematic ............................................................... 48
Wiring Diagram — VDC — ..................................... 49
Control Unit Input/Output Signal Specifications ...... 55
REFERENCE VALUE FROM CONSULT-II ......... 55
CONSULT-II Functions ........................................... 57
CONSULT-II MAIN FUNCTION ........................... 57
CONSULT-II SETTING PROCEDURE ................ 57
Self-Diagnosis ........................................................ 58
DESCRIPTION .................................................... 58
OPERATION PROCEDURE ................................ 58
ERASE MEMORY ............................................... 58
DISPLAY ITEM LIST ........................................... 59
Data Monitor ........................................................... 61
OPERATION PROCEDURE ................................ 61
DISPLAY ITEM LIST ........................................... 61
Active Test .............................................................. 63
OPERATION PROCEDURE ................................ 63TEST ITEM .......................................................... 64
For Fast and Accurate Diagnosis ............................ 65
PRECAUTIONS FOR DIAGNOSIS ..................... 65
Basic Inspection ...................................................... 66
BRAKE FLUID LEVEL, LEAKAGE AND BRAKE
PAD ...................................................................... 66
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY ......................................... 66
INSPECTION OF ABS WARNING LAMP, BRAKE
WARNING LAMP, VDC OFF INDICATOR LAMP,
AND SLIP INDICATOR LAMP ............................. 66
TROUBLE DIAGNOSIS FOR SYSTEM .................... 68
Wheel Sensor System ............................................ 68
Engine System ........................................................ 70
ABS Actuator and Electric Unit (Control Unit) 1 ...... 70
Steering Angle Sensor System ............................... 71
Yaw Rate/Side/Decel G Sensor System ................. 72
Pump Motor, Motor Relay System .......................... 74
Park/Neutral Position (PNP) Switch Circuit ............. 75
Solenoid and VDC Change-Over Valve, Actuator
Relay System .......................................................... 76
Stop Lamp Switch System ...................................... 77
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground System .................................... 78
Brake Fluid Level Switch System ............................ 80
CAN Communication System ................................. 81
Component Parts Inspection ................................... 81
VDC OFF SWITCH .............................................. 81
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 82
Excessive ABS Function Operation Frequently ...... 82
Unexpected Pedal Reaction ................................... 83
Longer Stopping Distance ....................................... 83
ABS Function Does Not Operate ............................ 84
Pedal Vibration and ABS Operation Sound Occurs ... 84
Vehicle Jerks During VDC/TCS/ABS Control .......... 85
WHEEL SENSORS ................................................... 86
Removal and Installation ......................................... 86
COMPONENTS ................................................... 86
REMOVAL ............................................................ 86
INSTALLATION .................................................... 86
SENSOR ROTOR ...................................................... 87
Removal and Installation ......................................... 87
FRONT ................................................................. 87
REAR ................................................................... 87
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 88
Removal and Installation ......................................... 88
COMPONENTS ................................................... 88
REMOVAL ............................................................ 89
INSTALLATION .................................................... 89
G SENSOR ................................................................ 90
Removal and Installation ......................................... 90
REMOVAL ............................................................ 90
INSTALLATION .................................................... 90
STEERING ANGLE SENSOR ................................... 91
Removal and Installation ......................................... 91
REMOVAL ............................................................ 91
INSTALLATION .................................................... 91

PRECAUTIONS
BRC-3
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

[ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BFS000CK
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 Brake SystemBFS000CL

Recommended fluid is brake fluid “DOT 3” or “DOT 4”. Refer to MA-14, "RECOMMENDED FLUIDS AND
LUBRICANTS" .

Never reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas.

To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.

Never use mineral oils such as gasoline or kerosene. They will
ruin rubber parts of the hydraulic system.

Using a flare nut wrench when removing flare nuts, and use a
flare nut torque wrench when tighten brake tube flare nuts.

When installing brake tubes, be sure to check torque.

Before working, turn ignition switch OFF and disconnect electri-
cal connector of ABS actuator and electric unit (control unit) or
battery negative terminal.
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with
a dust collector.
Precautions for Brake ControlBFS000CM

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine room. This is a normal condition of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and fluid leaks.

If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS function
may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.
SBR820BA

PRECAUTIONS
BRC-37
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

[VDC/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BFS000G3
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 Brake SystemBFS000DL

Recommended fluid is brake fluid “DOT 3” or “DOT 4”. Refer to MA-14, "RECOMMENDED FLUIDS AND
LUBRICANTS" .

Never reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas.

To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.

Never use mineral oils such as gasoline or kerosene. They will
ruin rubber parts of the hydraulic system.

Using a flare nut wrench when removing flare nuts, and use a
flare nut torque wrench when tighten brake tube flare nuts.

When installing brake tubes, be sure to check torque.

Before working, turn ignition switch OFF and disconnect electri-
cal connector of ABS actuator and electric unit (control unit) or
battery negative terminal.
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with
a dust collector.
Precautions for Brake ControlBFS000DM

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine room. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and fluid leaks.

If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS function
may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.

If the following components are replaced with non-genuine components or converted, the VDC OFF indi-
cator lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Compo-
nents related to suspension (Shock Absorber, Strut, Spring, Bush, etc.), Tires, wheels (exclude specified
SBR820BA

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION CO
A
CO

ENGINE COOLING SYSTEM
QR
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Liquid Gasket .................................. 3
REMOVAL OF LIQUID GASKET SEALING .......... 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 5
OVERHEATING CAUSE ANALYSIS .......................... 6
Troubleshooting Chart .............................................. 6
COOLING SYSTEM .................................................... 8
Cooling Circuit .......................................................... 8
System Chart ........................................................... 9
ENGINE COOLANT .................................................. 10
Inspection ............................................................... 10
LEVEL CHECK ................................................... 10
LEAK CHECK ..................................................... 10
Changing Engine Coolant ...................................... 10
DRAINING ENGINE COOLANT ......................... 10
REFILLING ENGINE COOLANT ......................... 11
FLUSHING COOLING SYSTEM ......................... 12
RADIATOR ................................................................ 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
INSPECTION AFTER INSTALLATION ............... 14
Checking Radiator Cap .......................................... 14
Checking Radiator .................................................. 15
RADIATOR (ALUMINUM TYPE) .............................. 16
Disassembly and Assembly ................................... 16
PREPARATION ................................................... 16
DISASSEMBLY ................................................... 16
ASSEMBLY ......................................................... 17
INSPECTION ...................................................... 19
COOLING FAN ......................................................... 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20INSTALLATION ................................................... 20
INSPECTION AFTER INSTALLATION ................ 20
Disassembly and Assembly .................................... 21
DISASSEMBLY ................................................... 21
INSPECTION AFTER DISASSEMBLY ................ 21
ASSEMBLY ......................................................... 21
WATER PUMP .......................................................... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 23
INSTALLATION ................................................... 23
INSPECTION AFTER INSTALLATION ................ 23
THERMOSTAT AND WATER CONTROL VALVE .... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSPECTION AFTER REMOVAL ....................... 25
INSTALLATION ................................................... 25
INSPECTION AFTER INSTALLATION ................ 25
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 26
Standard and Limit .................................................. 26
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 26
THERMOSTAT .................................................... 26
WATER CONTROL VALVE ................................. 26
RADIATOR .......................................................... 26
VQ
PRECAUTIONS ........................................................ 27
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 27
Precautions for Liquid Gasket ................................ 27
REMOVAL OF LIQUID GASKET SEALING ........ 27
LIQUID GASKET APPLICATION PROCEDURE ... 27
PREPARATION ......................................................... 29
Special Service Tools ............................................. 29
Commercial Service Tools ...................................... 29
OVERHEATING CAUSE ANALYSIS ........................ 30
Troubleshooting Chart ............................................ 30

PRECAUTIONS
CO-3
[QR]
C
D
E
F
G
H
I
J
K
L
MA
CO

[QR]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS0059V
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 GasketBBS005AV
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

CO-6
[QR]
OVERHEATING CAUSE ANALYSIS

OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartBBS0059Z
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat and water con-
trol valve 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

CO-10
[QR]
ENGINE COOLANT

ENGINE COOLANTPFP:KQ100
InspectionBBS005A2
LEVEL CHECK

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” range when engine is cool.

Adjust the engine coolant level as necessary.
LEAK CHECK

To check for leaks, apply pressure to the cooling system with
radiator cap tester (commercial service tool) and radiator cap
tester adapter (SST).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high-pressure engine coolant
escaping from radiator.
CAUTION:
Higher testing pressure than specified may cause radiator
damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantBBS005A3
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around radiator cap and carefully remove the cap. First, turn the cap a quarter
of a turn to release built-up pressure. Then turn the cap all the way.

Be careful not to allow engine coolant to contact drive belt.
DRAINING ENGINE COOLANT
1. Remove grommet from undercover.
2. Open radiator drain plug at the bottom of radiator, and then remove radiator cap.
When drain all of engine coolant in the system, open water drain plug on engine cylinder block.
Refer to EM-81, "
CYLINDER BLOCK" .
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
SMA412B
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC756AA
PBIC2512E

RADIATOR
CO-13
[QR]
C
D
E
F
G
H
I
J
K
L
MA
CO

RADIATORPFP:21400
Removal and InstallationBBS005A4

Refer to GI-10, "Components" for symbol marks in the figure.
WARNING:
Do not remove radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Remove undercover.
2. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
3. Remove air duct (inlet). Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect harness connector from fan motors, and move harness to aside.
5. Disconnect A/T fluid cooler hoses.

Install plug to avoid leakage of A/T fluid.
1. Reservoir tank 2. Reservoir tank cap 3. Reservoir tank hose
4. Mounting bracket 5. Mounting rubber (upper) 6. Radiator cap
7. Radiator 8. Radiator hose (upper) 9. Mounting rubber (lower)
10. A/T fluid cooler hose 11. Radiator drain plug 12. O-ring
13. Radiator hose (lower) 14. Radiator cooling fan assembly
A. To water outret B. To transaxle C. To water inlet
PBIC4710E