2007 NISSAN TIIDA EC Engine Control System

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]
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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-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

CO-64
< ON-VEHICLE REPAIR >[K9K]
COOLING FAN
COOLING FAN
Exploded ViewINFOID:0000000001381594
Removal and InstallationINFOID:0000000001381595
REMOVAL
1. Remove engine undercover using power tool.
2. Drain engine coolant. Refer to CO-58, "
Draining".
3. Remove air duct (inlet). Refer to EM-269, "
Exploded View".
4. Disconnect reservoir tank hoses and remove reservoir tank.
5. Remove radiator hose (upper). Refer to CO-62, "
Exploded View".
6. Disconnect harness connector for cooling fan control module and fan motor, and move harness aside.
7. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Only use genuine parts for fan shroud bolt and observe the specified torque (to prevent radiator from
being damaged).
NOTE:
Cooling fan is controlled by ECM. For details, refer to CO-52, "
EngineCoolingSystem".
1. Fan shroud 2. Cooling fan control module 3. Fan motor
4. Cooling fan
A. Reverse screw
: Vehicle front
ALBIA0424GB

INTELLIGENT KEY UNIT
DLK-171
< ECU DIAGNOSIS >[WITH I-KEY, WITHOUT SUPER LOCK]
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DLK
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Fail SafeINFOID:0000000001396640
DTC Inspection Priority ChartINFOID:0000000001396641
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000001396642
NOTE:
Details of time display
 CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF → ON again.
 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONSULT-III Fail-safe Cancellation
B2013: STRG COMM 1  Inhibits steering look unlocking Erase DTC
B2552: INTELLIGENT KEY Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
B2590: NATS MALFUNCTION Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
Priority DTC
1 U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
 B2552: INTELIGENT KEY
2 B2013: STRG COMM 1
 B2590: NATS MALFUNCTION
CONSULT display Detection condition Fail-safe Diagnosis
No DTC is detected.
further testing
may be required.———
U1000: CAN COMM CIRCUITIntelligent Key unit cannot receive CAN communi-
cation signal continuously for 2 seconds or more.—Check CAN communi-
cation system.
Refer to DLK-56
U1010: CONTROL UNIT (CAN)Intelligent Key unit detects internal CAN communi-
cation circuit malfunction.—Replace Intelligent Key
unit.
B2013: STRG COMM 1The ID verification result between Intelligent key
unit and steering lock unit are NG. Or Intelligent Key
unit cannot communicate with steering lock unit.×Perform steering lock
unit ID registration with
CONSULT-III
B2552: INTELLIGENT KEY Intelligent Key unit internal malfunction.×Replace Intelligent Key
unit.
B2590: NATS MALFUNCTIONThe ID verification result between Intelligent key
unit and BCM are NG. Or Intelligent Key unit cannot
communicate with BCM.×Check NATS
Refer to XX-XX, "*****"

DLK-400
< ECU DIAGNOSIS >[WITH I-KEY & SUPER LOCK]
INTELLIGENT KEY UNIT
Fail Safe
INFOID:0000000001530546
DTC Inspection Priority ChartINFOID:0000000001530547
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000001530548
NOTE:
Details of time display
 CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF → ON again.
 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONSULT-III Fail-safe Cancellation
B2013: STRG COMM 1  Inhibits steering look unlocking Erase DTC
B2552: INTELLIGENT KEY Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
B2590: NATS MALFUNCTION Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
Priority DTC
1 U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
 B2552: INTELIGENT KEY
2 B2013: STRG COMM 1
 B2590: NATS MALFUNCTION
CONSULT display Detection condition Fail-safe Diagnosis
No DTC is detected.
further testing
may be required.———
U1000: CAN COMM CIRCUITIntelligent Key unit cannot receive CAN communi-
cation signal continuously for 2 seconds or more.—Check CAN communi-
cation system.
Refer to DLK-56
U1010: CONTROL UNIT (CAN)Intelligent Key unit detects internal CAN communi-
cation circuit malfunction.—Replace Intelligent Key
unit.
B2013: STRG COMM 1The ID verification result between Intelligent key
unit and steering lock unit are NG. Or Intelligent Key
unit cannot communicate with steering lock unit.×Perform steering lock
unit ID registration with
CONSULT-III
B2552: INTELLIGENT KEY Intelligent Key unit internal malfunction.×Replace Intelligent Key
unit.
B2590: NATS MALFUNCTIONThe ID verification result between Intelligent key
unit and BCM are NG. Or Intelligent Key unit cannot
communicate with BCM.×Check NATS
Refer to XX-XX, "*****"

EC-1
ENGINE
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SECTION EC
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CONTENTS
ENGINE CONTROL SYSTEM
HR16DE (WITH EURO-OBD)
BASIC INSPECTION ...................................
18
DIAGNOSIS AND REPAIR WORKFLOW .........18
Work Flow ...............................................................18
Diagnostic Work Sheet ............................................20
INSPECTION AND ADJUSTMENT ....................22
BASIC INSPECTION .................................................22
BASIC INSPECTION : Special Repair Require-
ment ........................................................................
22
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ........................................................
25
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ................................
25
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .....
25
IDLE SPEED ..............................................................25
IDLE SPEED : Description ......................................26
IDLE SPEED : Special Repair Requirement ...........26
IGNITION TIMING ......................................................26
IGNITION TIMING : Description ..............................26
IGNITION TIMING : Special Repair Requirement ....26
ACCELERATOR PEDAL RELEASED POSITION
LEARNING ................................................................
26
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Description .........................................
26
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Special Repair Requirement ..............
26
THROTTLE VALVE CLOSED POSITION LEARN-
ING .............................................................................
27
THROTTLE VALVE CLOSED POSITION
LEARNING : Description .........................................
27
THROTTLE VALVE CLOSED POSITION
LEARNING : Special Repair Requirement ..............
27
IDLE AIR VOLUME LEARNING ................................27
IDLE AIR VOLUME LEARNING : Description .........27
IDLE AIR VOLUME LEARNING : Special Repair
Requirement ............................................................
27
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR .......................................................................
29
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Description ................................................
29
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement .....................
29
FUNCTION DIAGNOSIS ..............................30
ENGINE CONTROL SYSTEM ..........................30
System Diagram .....................................................30
System Description ..................................................31
Component Parts Location ....................................31
Component Description ...........................................36
MULTIPORT FUEL INJECTION SYSTEM .......38
System Diagram .....................................................38
System Description ..................................................38
Component Parts Location ....................................41
Component Description ...........................................46
ELECTRIC IGNITION SYSTEM ........................47
System Diagram .....................................................47
System Description ..................................................47
Component Parts Location ....................................48
Component Description ...........................................53
AIR CONDITIONING CUT CONTROL ..............54
System Diagram ......................................................54
System Description ..................................................54
Component Parts Location ....................................55
Component Description ...........................................60
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ..............................................................
61
System Diagram ......................................................61
System Description ..................................................61

EC-5
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ECA
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316
Diagnosis Procedure .............................................316
Component Inspection (Fuel Pump) .....................318
IGNITION SIGNAL ...........................................319
Description ............................................................319
Component Function Check ..................................319
Diagnosis Procedure .............................................319
Component Inspection (Ignition Coil with Power
Transistor) .............................................................
322
Component Inspection (Condenser) .....................322
MALFUNCTION INDICATOR ...........................324
Description ............................................................324
Component Function Check ..................................324
Diagnosis Procedure .............................................324
POSITIVE CRANKCASE VENTILATION ........325
Description ............................................................325
Component Inspection ..........................................325
REFRIGERANT PRESSURE SENSOR ...........326
Description ............................................................326
Component Function Check ..................................326
Diagnosis Procedure .............................................326
ECU DIAGNOSIS .......................................328
ECM ..................................................................328
Reference Value ...................................................328
Wiring Diagram - ENGINE CONTROL SYSTEM - ..339
Fail Safe ...............................................................358
DTC Inspection Priority Chart .............................360
DTC Index ............................................................361
How to Set SRT Code ........................................363
Test Value and Test Limit ..................................365
SYMPTOM DIAGNOSIS ............................366
ENGINE CONTROL SYSTEM SYMPTOMS ....366
Symptom Table .....................................................366
NORMAL OPERATING CONDITION ...............370
Description ............................................................370
PRECAUTION ............................................371
PRECAUTIONS ................................................371
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
371
Precaution for Procedure without Cowl Top Cover ..371
Precautions For Xenon Headlamp Service ...........371
On Board Diagnostic (OBD) System of Engine
and A/T ..................................................................
372
General Precautions .............................................372
PREPARATION .........................................375
PREPARATION ................................................375
Special Service Tools ............................................375
Commercial Service Tools ....................................375
ON-VEHICLE MAINTENANCE ..................377
FUEL PRESSURE ...........................................377
Inspection ..............................................................377
EVAPORATIVE EMISSION SYSTEM .............379
Inspection ..............................................................379
SERVICE DATA AND SPECIFICATIONS
(SDS) ..........................................................
380
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
380
Idle Speed .............................................................380
Ignition Timing .......................................................380
Calculated Load Value ..........................................380
Mass Air Flow Sensor ............................................380
HR16DE (WITHOUT EURO-OBD)
BASIC INSPECTION .................................
381
DIAGNOSIS AND REPAIR WORKFLOW ......381
Work Flow ..............................................................381
Diagnostic Work Sheet ..........................................383
INSPECTION AND ADJUSTMENT ................385
BASIC INSPECTION ...............................................385
BASIC INSPECTION : Special Repair Require-
ment .......................................................................
385
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ......................................................
388
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ...............................
388
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement ....
388
IDLE SPEED ............................................................388
IDLE SPEED : Description ....................................389
IDLE SPEED : Special Repair Requirement .........389
IGNITION TIMING ....................................................389
IGNITION TIMING : Description ............................389
IGNITION TIMING : Special Repair Requirement ..389
ACCELERATOR PEDAL RELEASED POSITION
LEARNING ...............................................................
389
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Description .......................................
389
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Special Repair Requirement ............
389
THROTTLE VALVE CLOSED POSITION LEARN-
ING ...........................................................................
390
THROTTLE VALVE CLOSED POSITION
LEARNING : Description .......................................
390
THROTTLE VALVE CLOSED POSITION
LEARNING : Special Repair Requirement ............
390
IDLE AIR VOLUME LEARNING ..............................390
IDLE AIR VOLUME LEARNING : Description .......390