Fan system NISSAN TIIDA 2007 Service Repair Manual

BCS
DIAGNOSIS SYSTEM (BCM)
BCS-23
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L B A
O
P N
ACTIVE TEST
AIR CONDITIONER
AIR CONDITIONER : CONSULT-III Function (BCM - AUTO AIR CONDITIONER)
INFOID:0000000001451473
ACTIVE TEST
DATA MONITOR
INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)INFOID:0000000001451474
DATA MONITOR
Monitor Item
[Unit]Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged from IGN signal (ignition power supply)
HAZARD SW [ON/OFF] The switch status input from the hazard switch
TURN SIGNAL R [ON/OFF]
Each switch condition that BCM judges from the combination switch reading function
TURN SIGNAL L [ON/OFF]
TURN/L MNTR [ON/OFF] Displays status (one bulb out: ON/other: OFF) as judged from bulb signal
Test Item Operation Description
FLASHERRH Outputs the voltage to turn the right side turn signal lamps ON.
LH Outputs the voltage to turn the left side turn signal lamps ON.
OFF Stops the voltage to turn the turn signal lamps OFF.
Test Item Operation Description
A?C INDICATORON Outputs the signal to turn the A/C indicator ON.
OFF Stops the signal to turn the A/C indicator OFF.
Monitor Item
[Unit]Contents
IGNSW [ON/OFF]Display [ignition switch position (On)/(Off), ACC position (Off)] status as judged form ignition
switch signal.
FAN ON SIG [ON/OFF] Display [FAN (On)/FAN (Off)] status as judged form blower fan motor switch signal.
AIR COND SW [ON/OFF] Display [COMP (On)/COMP (Off)] status as judged form air conditioner switch signal.
Monitor Item
[Unit]Condition
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position.
PUSH SW [ON/OFF] Indicates condition of ignition knob switch.
I-KEY LOCK [ON/OFF] Indicates condition of lock signal from Intelligent Key.
I-KEY UNLOCK [ON/OFF] Indicates [condition of unlock signal from Intelligent Key.
I-KEY ALL UNL [ON/OFF] Indicates condition of all unlock signal from Intelligent Key.
I-KEY TRUNK OP [ON/OFF] Indicates condition of trunk open signal from Intelligent Key.
DOOR SW-DR [ON/OFF] Indicates condition of front door switch (driver side).
DOOR SW-AS [ON/OFF] Indicates condition of front door switch (passenger side).
DOOR SW-RR [ON/OFF] Indicates condition of rear door switch RH.

BCS-26
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
*: Each lamp switch is in ON position.
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT ALM)INFOID:0000000001451479
WORK SUPPORT
SIGNAL BUFFER
SIGNAL BUFFER : CONSULT-III Function (BCM - SIGNAL BUFFER)INFOID:0000000001451480
DATA MONITOR
ACTIVE TEST
PTC HEATER
PTC HEATER : CONSULT-III Function (BCM - PTC HEATER)INFOID:0000000001451481
DATA MONITOR
ACTIVE TEST
Work Item Description
SECURITY ALARM SETVehicle security function mode can be changed in this mode.
 ON: Vehicle security function is ON.
 OFF: Vehicle security function is OFF.
Monitor Item
[Unit]Description
OIL PRESS SW [ON/OFF] Displays the status of oil pressure switch received from IPDM E/R via CAN communication.
Test Item Operation Description
OIL PRESSURE SWOFF OFF
ONBCM transmits the oil pressure switch signal to the combination meter via CAN communica-
tion, which illuminates the oil pressure warning lamp in the combination meter.
Monitor Item
[Unit]Description
ELEC PWR CUT
[OFF/FREEZ/INHBT]Indicate [OFF/FREEZ/INHBT] condition of the PTC heater states.
FA N O N S I G
[On/Off]Displays [FAN (ON)/FAN (OFF)] status as judged from blower fan motor signal.
ENGINE STATUS
[STOP/STAL/RUN/CRA]Indicate [STOP/STALL/RUN/CRA] condition of the engine states.
ENG COOLNT T
[°C]The engine coolant temperature (determined by the signal voltage of the engine coolant tem-
perature sensor) is displayed.
BATTERY VOLT
[V]The power supply voltage of BCM is displayed.
ENGINE RPM
[rpm]Indicates the engine speed computed from the signal of the crankshaft position sensor.
OUTSIDE TEMP
[°C]The outside air temperature (determined by the signal voltage of the OAT sensor) is displayed.

BCS-36
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
ENGINE RPM
NOTE:
Diesel engine models
onlyEngine runningApproximately the same as tachom-
eter reading
ENGINE RUNEngine stopped OFF
Engine running ON
ENGINE STATUS
NOTE:
Diesel engine models
onlyEngine stopped STOP
While the engine stalls STALL
Engine running RUN
At engine cranking CRA
FA N O N S I GFan switch OFF OFF
Fan switch ON ON
FR FOG SWFront fog lamp switch OFF OFF
Front fog lamp switch ON ON
FR WASHER SWFront washer switch OFF OFF
Front washer switch ON ON
FR WIPER LOWFront wiper switch OFF OFF
Front wiper switch LO ON
FR WIPER HIFront wiper switch OFF OFF
Front wiper switch HI ON
FR WIPER INTFront wiper switch OFF OFF
Front wiper switch INT ON
FR WIPER STOPAny position other than front wiper stop position OFF
Front wiper stop position ON
HAZARD SWWhen hazard switch is not pressed OFF
When hazard switch is pressed ON
LIGHT SW 1STLighting switch OFF OFF
Lighting switch 1st ON
H/L SW POSHeadlamp switch OFF OFF
Headlamp switch 1st ON
HI BEAM SWHigh beam switch OFF OFF
High beam switch HI ON
HOOD SWClose the hood
NOTE:
Vehicles without theft warning system are OFF-fixedOFF
Open the hood ON
H/L WASH SWNOTE:
The item is indicated, but not monitoredOFF
IGN ON SWIgnition switch OFF or ACC OFF
Ignition switch ON ON
IGN SW CANIgnition switch OFF or ACC OFF
Ignition switch ON ON
INT VOLUME Wiper intermittent dial is in a dial position 1 - 7 1 - 7
I-KEY LOCK
1LOCK button of Intelligent Key is not pressed OFF
LOCK button of Intelligent Key is pressed ON Monitor Item Condition Value/Status

CO-1
ENGINE
C
D
E
F
G
H
I
J
K
L
M
SECTION CO
A
CO
N
O
P
CONTENTS
ENGINE COOLING SYSTEM
HR16DE
FUNCTION DIAGNOSIS ...............................
4
DESCRIPTION ....................................................4
Engine Cooling System .............................................4
Engine Cooling System Schematic ...........................5
SYMPTOM DIAGNOSIS ...............................6
OVERHEATING CAUSE ANALYSIS ..................6
Troubleshooting Chart ...............................................6
PRECAUTION ...............................................8
PRECAUTIONS ...................................................8
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
8
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
8
Precaution for Liquid Gasket .....................................8
PREPARATION ...........................................10
PREPARATION ..................................................10
Special Service Tool ...............................................10
Commercial Service Tool ........................................10
ON-VEHICLE MAINTENANCE ....................11
ENGINE COOLANT ...........................................11
Inspection ................................................................11
Changing Engine Coolant .......................................11
RADIATOR .........................................................14
Checking Radiator Cap ...........................................14
Checking Radiator ...................................................14
ON-VEHICLE REPAIR .................................16
RADIATOR .........................................................16
Component ..............................................................16
Removal and Installation .........................................16
COOLING FAN ..................................................18
Component (Models with A/C) .................................18
Component (Models without A/C) ............................18
Removal and Installation .........................................19
WATER PUMP ..................................................20
Exploded View .........................................................20
Removal and Installation .........................................20
Inspection ................................................................21
THERMOSTAT ..................................................22
Exploded View .........................................................22
Removal and Installation .........................................22
Inspection ................................................................23
WATER OUTLET ..............................................24
Exploded View .........................................................24
Removal and Installation .........................................24
Inspection ................................................................25
DISASSEMBLY AND ASSEMBLY ..............26
COOLING FAN ..................................................26
DISASSEMBLY AND ASSEMBLY ..........................26
SERVICE DATA AND SPECIFICATIONS
(SDS) ............................................................
27
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
27
Periodical Maintenance Specification ......................27
Radiator ...................................................................27
Thermostat ..............................................................27
MR18DE
FUNCTION DIAGNOSIS ..............................
28
COOLING SYSTEM ..........................................28
Cooling Circuit .........................................................28

CO-2
SYMPTOM DIAGNOSIS .............................30
OVERHEATING CAUSE ANALYSIS ................30
Troubleshooting Chart ............................................30
PRECAUTION .............................................32
PRECAUTIONS .................................................32
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
32
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
32
Precaution for Liquid Gasket ..................................32
PREPARATION ...........................................34
PREPARATION .................................................34
Special Service Tool ...............................................34
Commercial Service Tool .......................................34
ON-VEHICLE MAINTENANCE ...................35
ENGINE COOLANT ...........................................35
Inspection ...............................................................35
Changing Engine Coolant .......................................35
RADIATOR ........................................................38
Checking Radiator Cap ..........................................38
Checking Radiator ..................................................38
ON-VEHICLE REPAIR ................................40
RADIATOR ........................................................40
Component .............................................................40
Removal and Installation ........................................40
COOLING FAN ..................................................42
Component (Models with A/C) ................................42
Component (Models without A/C) ...........................42
Removal and Installation ........................................43
WATER PUMP ...................................................44
Component .............................................................44
Removal and Installation ........................................44
THERMOSTAT ..................................................45
Component .............................................................45
Removal and Installation ........................................45
WATER OUTLET AND WATER CONTROL
VALVE ...............................................................
47
Component .............................................................47
Removal and Installation ........................................47
DISASSEMBLY AND ASSEMBLY .............50
COOLING FAN ..................................................50
DISASSEMBLY AND ASSEMBLY .........................50
SERVICE DATA AND SPECIFICATIONS
(SDS) ...........................................................
51
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
51
Standard and Limit ..................................................51
K9K
FUNCTION DIAGNOSIS ............................
52
DESCRIPTION ...................................................52
Engine Cooling System .........................................52
SYMPTOM DIAGNOSIS ............................53
OVERHEATING CAUSE ANALYSIS ................53
Troubleshooting Chart ............................................53
PRECAUTION ............................................55
PRECAUTIONS .................................................55
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
55
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
55
Precaution for Liquid Gasket ...................................55
PREPARATION ..........................................57
PREPARATION .................................................57
Special Service Tools .............................................57
Commercial Service Tools ......................................57
ON-VEHICLE MAINTENANCE ..................58
ENGINE COOLANT ...........................................58
Inspection ................................................................58
Draining ...................................................................58
Refilling ...................................................................58
Flushing ..................................................................59
RADIATOR ........................................................60
Checking Radiator Cap ...........................................60
Checking Radiator ..................................................60
ON-VEHICLE REPAIR ...............................62
RADIATOR ........................................................62
Exploded View ........................................................62
Removal and Installation .........................................62
Inspection ................................................................63
COOLING FAN ..................................................64
Exploded View ........................................................64
Removal and Installation .........................................64
Disassembly and Assembly ....................................65
Inspection ................................................................65
WATER PUMP ...................................................66
Exploded View ........................................................66
Removal and Installation .........................................66
Inspection ................................................................66

CO-6
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001381552
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or pa-
per 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
Reservoir tank 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 cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration

CO-12
< ON-VEHICLE MAINTENANCE >[HR16DE]
ENGINE COOLANT
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-100, "
Exploded
View".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-16, "
Component".
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-27, "
Exploded View".
5. Disconnect heater hose (1) at position ( ) as shown.
 Front
 Reposition heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.
Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2 1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
Use NISSAN Genuine Engine Coolant or equivalent mixed
with water (distilled or demineralized). Fill cooling system
to specification. Refer to MA-19, "
Fluids and Lubricants".
 When engine coolant overflows disconnected heater hose,
connect heater hose, and continue filling the engine coolant, if
heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly. Refer to EM-27, "
Exploded View".
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat the engine.
10. Stop engine and cool down to less than approximately 50°C (122°F).
 Cool down using fan to reduce the time.
 If necessary, refill radiator up to filler neck with engine coolant.
11. Refill reservoir tank to “MAX” level line with engine coolant.
12. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no
longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 11 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed.
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-100, "
Exploded
View".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-16, "
Component".
PBIC3802E
SMA182B

COOLING FAN
CO-19
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
Removal and InstallationINFOID:0000000001534609
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-27, "
Exploded View".
3. Remove reservoir tank.
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-16, "
Component".
5. Disconnect harness connectors from fan motor, and move harness to aside.
6. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch the radiator core.
INSTALLATION
Installation is the reverse order of removal.
 Cooling fans are controlled by ECM. For details, refer to CO-4, "
Engine Cooling System".
CAUTION:
Be careful not to damage or scratch the radiator core.

CO-30
< SYMPTOM DIAGNOSIS >[MR18DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001337836
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed Thermostat
Damaged finsDust contamination or pa-
per 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—
—
Engine coolant viscosity—
Poor engine coolant quality — —
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 cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration

CO-36
< ON-VEHICLE MAINTENANCE >[MR18DE]
ENGINE COOLANT
1. Install reservoir tank if removed.
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, install and tighten it. Refer to EM-211, "
Compo-
nent".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-40, "
Component".
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-154, "
Component".
5. Disconnect heater hose (1) at position ( ) as shown.
 Front
 Reposition heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.
Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2 1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
Use NISSAN Genuine Engine Coolant or equivalent mixed
with water (distilled or demineralized). Fill cooling system
to specification. Refer to MA-19, "
Fluids and Lubricants".
 When engine coolant overflows disconnected heater hose,
connect heater hose, and continue filling the engine coolant, if
heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly. Refer to EM-154, "
Component".
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat the engine.
10. Stop engine and cool down to less than approximately 50°C (122°F).
 Cool down using fan to reduce the time.
 If necessary, refill radiator up to filler neck with engine coolant.
11. Refill reservoir tank to “MAX” level line with engine coolant.
12. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no
longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 11 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed.
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-211, "
Compo-
nent".
PBIC3802E
SMA182B