2003 NISSAN ALMERA N16 Engine Control

IGNITION “ON” POWER SUPPLY CIRCUIT FOR TIME
CONTROL UNIT
=NJEL0482S17
1 CHECK IGNITION “ON” POWER SUPPLY CIRCUIT FOR TIME CONTROL UNIT
1. Disconnected time control unit harness connector.
2. Check voltage between time control unit terminal 1 and ground.
SEL429X
OK or NG
OK Ignition “ON” power supply circuit is OK.
NGCheck the following.
10A fuse [No. 10, located in fuse block (J/B)]
Harness for open or short between time control unit and fuse.
HAZARD REMINDER CHECKNJEL0482S18
1 CHECK HAZARD WARNING LAMP
Check if hazard warning lamp flashes with hazard switch.
Does hazard warning lamp operate?
Ye s G O T O 2 .
No Check hazard warning lamp circuit.
2 CHECK HAZARD REMINDER OPERATION
Check the following at when push the multi-remote control switch.
Check voltage between terminal 11 and ground.
Check voltage between terminal 15 and ground.
SEL499X
OK or NG
OK System is OK.
NG Replace time control unit. (Before replacing the unit, make sure the remote controller ID
registration for time control unit and the remote controller battery onceagain.)
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MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-363

DescriptionNJEL0583The Smart Entrance Control Unit is applied for QG engine models and YD engine models with common rail.
OUTLINENJEL0583S01The smart entrance control unit totally controls the following body electrical system operations.
Warning chime, refer to EL-136, “WARNING CHIME”.
Rear defogger and door mirror defogger, refer to EL-173, “REAR WINDOW DEFOGGER”.
Power door lock, refer to EL-261, “POWER DOOR LOCK SYSTEM”.
Power door lock - Super lock - (RHD models), refer to EL-301, “POWER DOOR LOCK — SUPER LOCK
—”.
Multi-remote control system, refer to EL-352, “MULTI-REMOTE CONTROL SYSTEM”.
NATS (Nissan Anti-Theft system), refer to EL-386, “NATS (NISSAN ANTI-THEFT SYSTEM)”.
Interior lamp, refer to EL-80, “INTERIOR ROOM LAMP”.
Also, smart entrance control unit has the “sleep/wake-up control” function. Smart entrance control unit puts
itself (the whole smart entrance control unit) to sleep under certain conditions to prevent unnecessary power
consumption. Then, when a certain input is detected, the system wakes itself up. For more detailed
information, refer to EL-368, “SLEEP/WAKE-UP CONTROL”.
INTERIOR LAMP/SPOT LAMP/VANITY MIRROR ILLUMINATIONNJEL0583S02The lamps turn off automatically when the interior lamp, spot lamp or/and vanity mirror illumination are illumi-
nated with the ignition key in the OFF position, if the lamp remains lit by the door switch open signal or if the
lamp switch is in the ON position for more than 30 minutes.
After lamps are turned off by the smart entrance control unit, the lamps illuminate again when:
Driver’s door is locked or unlocked with remote controller, door lock/unlock switch or door key cylinder.
Ignition switch is turned to ON.
Door is opened or closed,
Key is inserted into ignition key cylinder.
REAR WINDOW DEFOGGER/DOOR MIRROR DEFOGGERNJEL0583S03Rear window defogger is turned off in approximately 15 minutes after the rear window defogger switch is turned
on.
SLEEP/WAKE-UP CONTROLNJEL0583S04Sleep ControlNJEL0583S0401“Sleep” control prevents unnecessary power consumption. After the following conditions are met, the smart
entrance control unit suspends the operation. The whole smart entrance control unit is set in the “sleep” mode.
Ignition switch “OFF”
All electrical loads (in the smart entrance control unit) “OFF”
Timer “OFF”
Each switch do not input
Wake-up ControlNJEL0583S0402When the smart entrance control unit detects a “wake-up” signal, it wakes up the whole system and starts
operating again. When any one of the following switches are turned ON, the “sleep” mode is canceled:
Ignition switch
Hazard switch
Headlamp switch
Hood switch
Trunk room lamp switch (sedan models)
Back door switch (hatchback or wagon models)
Each door switch
Trunk release switch (sedan models)
Back door release switch (hatchback or wagon models)
External trunk release switch (sedan models)
External back door release switch (hatchback or wagon models)
SMART ENTRANCE CONTROL SYSTEM
Description
EL-368

Terminal
No.Wire
colorConnections Operated condition Voltage (Approximate values)
24 BRWasher switch
(Headlamp washer switch)[Head lamp switch 1st or 2nd posi-
tion]
Washer switch OFF,ON12V,0V
25 G/ORCombination switch
(Turn signal switch)Turn signal switch:
Neutral,Left turn position12V,0V
26 L/BCombination switch
(Turn signal switch)Turn signal switch:
Neutral,Right turn position12V,0V
27 Y/BVehicle security horn relay
(RHD models)When theft warning system:
Armed,Disarmed0V,12V
28 R/Y Interior room lampWhen interior lamp is operated using
remote controller (Lamp switch in
“DOOR” position)12V,0V
29 Y/G Ignition key switch Ignition key is in “ON” position 12V
30 G/R Hazard switch Hazard switch: OFF,ON 12V,0V
31 W Rear window defogger relay[Ignition switch “ON”]
Rear window defogger switch:
OFF,ON12V,0V
32 LG/B Cooling fan relay[Ignition switch“ ON”]
Cooling fan: Operating,Not operat-
ing0V,12V
33 LG/R Cooling fan relay[Ignition switch “ON”]
Cooling fan: Operating,Not operat-
ing0V,12V
34 L/Y Security indicator Ignition switch ON,OFF 12V,0V
39 BR/WRear door switch
(Passenger side)Rear door LH or RH: Open,Closed 0V,12V
41 L Air conditioner relay[Engine is running]
Air conditioner switch: ON,
OFF12V,0V
43 R/WFront door switch
(Driver side)Front door (Driver side):
Open,Closed12V,0V
44 R/WFront door switch
(Passenger side)Front door (Passenger side):
Open,Closed0V,12V
45 R/YRear door switch
(Driver side)Rear door LH or RH: Open,Closed 0V,12V
49 W/L Power source — 12V
50 GPower door super lock actuator
(Rear)Remote controller door lock switch:
Free,Press0V,12V
51 L/R Driver door lock actuatorDoor lock & unlock switch:
Free,Lock0V,12V
52 W/R Door lock actuatorsDoor lock & unlock switch:
Free,Unlock0V,12V
53 B Ground — 0V
54 R/B Door lock actuatorsDoor lock & unlock switch:
Free,Unlock0V,12V
55 W/BPower door super lock actuator
(Front)Remote controller door lock switch:
Free,Unlock0V,12V
56 R/B Power source — 12V
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SMART ENTRANCE CONTROL SYSTEM
Smart Entrance Control Unit Inspection Table (Cont’d)
EL-377

Description=NJEL0485The TCU is applied for YD engine models without common rail and K9K engine models.
The TCU has the following functions.
INTERIOR LAMP TIMERNJEL0485S01The interior lamp timer is controlled by the TCU.
For further information, refer to “INTERIOR ROOM LAMP” (EL-80).
IGNITION KEY WARNING CHIME AND LIGHT WARNING CHIMENJEL0485S02The ignition key and light warning chime are controlled by the TCU.
For further information, refer to “WARNING CHIME” (EL-136).
REAR WINDOW DEFOGGER TIMERNJEL0485S03The rear window defogger and door mirror defogger system are controlled bythe TCU.
For further information, refer to “REAR WINDOW DEFOGGER” (EL-174).
POWER DOOR LOCK (SUPER LOCK)NJEL0485S04The power door lock (super lock) is controlled by the TCU.
For further information, refer to “POWER DOOR LOCK — Super Lock —” (EL-301).
MULTI-REMOTE CONTROL SYSTEMNJEL0485S05The multi-remote control system is controlled by the TCU.
For further information, refer to “MULTI-REMOTE CONTROL SYSTEM” (EL-352).
FUNCTIONNJEL0485S06The TCU has the following control function.
Item Details of control
Direction indicatorsSwitches the director indicators (Left, Right or All) when the combination
switch or hazard switch is operated.
Light warning chimeSounds warning chime when driver’s door is opened with light switch in the
1st or 2nd position and ignition switch “OFF”.
Ignition key warning chineSounds warning chime when driver’s door is opened with key in ignition and
the driver door lock knob (unlock sensor) is moved from the “unlock” posi-
tion to the “lock” position.
Rear window defogger timerTurn off rear window defogger and door mirror heater, if equipped, about 15
minutes after the rear window defogger switch is turned “ON”.
Battery saverShuts off interior lamp in 30 minutes if any door is left open when ignition
switch is “OFF”. The battery saver will reset if ignition switch is cycled or any
door is opened or closed.
Interior lamp timerKeep interior lamp illuminated for about 30 seconds when:
driver’s door is unlocked,
the ignition is switched off,
driver’s door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:
driver’s door is locked, or
ignition switch is turned “ON”.
Power door lock Centrally locks and unlocks the vehicle
Super lock Activates and de-activates the super lock system.
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TIME CONTROL UNIT
Description
EL-381

registering another NATS ignition key ID no., it may be necessary to re-register original key iden-
tification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System CompositionNJEL0408The immobilizer function of the NATS consists of the following:
NATS ignition key
NATS immobilizer control unit (IMMU) located in the ignition key cylinder
Engine control module (ECM)
Dongle unit (RHD models)
Security indicator
Navigation control unit (Models with Navigation system)
NEL776
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NATS (NISSAN ANTI-THEFT SYSTEM)
System Description (Cont’d)
EL-387

SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)REFERENCE PART NO. OF
ILLUSTRATION ON SYSTEM
DIAGRAM
Security ind. dose not blink just
after ignition switch is turned to
ON.
Engine can not be started*PROCEDURE 9
(EL-408, “Diagnostic Proce-
dure 9”)Open or short circuit starter
motor between smart entrance
control unit—
*: CONSULT-II Self-diagnostic results display screen “no malfunction isdetected”.
DIAGNOSTIC SYSTEM DIAGRAMNJEL0590S04
SIIA1667E
SEL152X
DIAGNOSTIC PROCEDURE 1NJEL0590S05Self-diagnostic results:
“ECM INT CIRC-IMMU” displayed on CONSULT-II screen
1. Confirm SELF-DIAGNOSTIC RESULTS “ECM INT CIRC-
IMMU” displayed on CONSULT-II screen.
2. Replace ECM.
Ref. part No. B
3. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual
NATS”.
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-396

DIAGNOSTIC PROCEDURE 2=NJEL0590S06Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
1 CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU” displayed on CONSULT-II screen.
NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key registration procedure, even if the system is not mal-
functioning.
SEL292W
Is CONSULT-II screen displayed as above?
Ye s G O T O 2 .
No GO TO EL-394, “SYMPTOM MATRIX CHART 1”.
2 CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU connector.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M195 terminal 56 (R/B) and ground
CONSULT-II or tester.
SIIA1669E
Battery voltage should exist.
OK or NG
OK GO TO 3.
NGCheck the following
10A fuse [No. 12, located in the fuse block (J/B)]
Harness for open or short between fuse and IMMU connector
Ref. Part No. C1
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NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-397

3 CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M42 terminal 29 (Y/G) and ground with
CONSULT-II or tester.
SIIA1668E
Battery voltage should exist.
OK or NG
OK GO TO 4.
NoCheck the following
10A fuse [No. 10, located in the fuse block (J/B)]
Harness for open or short between fuse and IMMU connector
Ref. part No. C2
4 CHECK GROUND CIRCUIT FOR IMMU
1. Turn ignition OFF.
2. Check continuity between IMMU (Smart entrance control unit) harness connector M195 terminal 53 (B) and ground.
SIIA1565E
Continuity should exist.
OK or NG
OK GO TO 5.
NG Repair harness.Ref. part No. C3
5 REPLACE IMMU (SMART ENTRANCE CONTROL UNIT)
1. Replace IMMU (Smart entrance control unit)Ref. part No. A
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”.
Does the engine start?
OK IMMU (Smart entrance control unit) is malfunctioning.
No ECM is malfunctioning.
Replace ECM.Ref. part No. B
Perform initialization with CONSULT-II
For initialization, refer to “CONSULT-II operation manual NATS”
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-398