ECU NISSAN PATROL 2006 Owner's Guide

SYMPTOM CHART
SYMPTOMDisplayed ``SELF-DIAG RESULTS''
on CONSULT screen.DIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)
+MIL blinking
+Engine will startIMMUPROCEDURE 1
(EL-246)IMMU
ECMPROCEDURE 2
(EL-246)ECM
+MIL blinking
+Engine does not startCHAIN OF ECM-IMMUPROCEDURE 3
(EL-247)Open circuit in battery voltage line
of IMMU circuit
Open circuit in ignition line of IMMU
circuit
Open circuit in ground line of IMMU
circuit
Open or short circuit in communica-
tion line between IMMU and ECM
ECM
IMMU
DIFFERENCE OF KEYPROCEDURE 4
(EL-249)Unregistered key
IMMU
CHAIN OF IMMU-KEYPROCEDURE 5
(EL-250)Malfunction of key ID chip
IMMU
ID DISCORD, IMM-ECMPROCEDURE 6
(EL-250)System initialisation has not yet
been completed.
ECM
IMMU
MINGLE NOISEPROCEDURE 7
(EL-251)Noise interference in communica-
tion line
LOCK MODEPROCEDURE 8
(EL-252)LOCK MODE
+MIL staying ONDON'T ERASE BEFORE CHECK-
ING ENG DIAGWORK FLOW
(EL-244)Engine trouble data and NATS
trouble data have been detected in
ECM.
+Security indicator does not oper-
ate properly.
+Engine starts properly.ÐPROCEDURE 9
(EL-253)Security indicator circuit
Security indicator
Continuation of initialisation mode
*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part: Stays ON
For single malfunction of an engine-related part: Stays ON
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-245

DIAGNOSTIC PROCEDURE 9
Security indicator check
CHECK INDICATOR CIRCUIT.
1. Disconnect NATS IMMU connector.
2. Check voltage between NATS IMMU
terminalj
6and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse [No.
24,
located in the fuse block
(J/B)]
+Security indicator
+Harness for open or
short between fuse and
security indicator
+Harness for open or
short between NATS
IMMU and security indi-
cator
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
How to Replace NATS IMMU
NOTE:
+If NATS IMMU is not installed correctly, NATS system will
not operate properly and SELF-DIAG RESULTS on CON-
SULT screen will show ``LOCK MODE'' or ``CHAIN OF
IMMU-KEY''.
SEL400VA
SEL498V
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-253

System Description
NATS has the following immobiliser functions:
+Since only NATS ignition keys, whose ID nos. have been registered into the ECM and IMMU of NATS,
allow the engine to run, operation of a stolen vehicle without a NATS registered key is prevented by NATS.
That is to say, NATS will immobilize the engine if someone tries to start it without the registered key of
NATS.
+Both of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of four key IDs can be registered into the NATS compo-
nents.
+The NATS security indicator (NATS security ind.) blinks when the ignition switch is in ``OFF'' or ``ACC''
position. Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
+When NATS detects trouble, the malfunction indicator lamp (MIL) blinks.
+NATS trouble diagnoses, system initialisation and additional registration of other NATS ignition key IDs
must be carried out using CONSULT hardware and CONSULT NATS software.
When NATS initialisation has been completed, the ID of the inserted ignition key is automatically NATS
registered. Then, if necessary, additional registration of other NATS ignition key IDs can be carried out.
Regarding the procedures of NATS initialisation and NATS ignition key ID registration, refer to CONSULT
operation manual, NATS.
+When servicing a malfunction of the NATS (indicated by ¯ashing of Malfunction Indicator Lamp)
or registering another NATS ignition key ID no., it may be necessary to re-register original key
identi®cation. Therefore, be sure to receive all keys from vehicle owner.
System Composition
The immobiliser function of the NATS consists of the following:
+NATS ignition key
+NATS antenna amp. located in the ignition key cylinder
+NATS immobiliser control unit (NATS IMMU)
+Engine control module (ECM)
+NATS security indicator
+Malfunction indicator lamp (MIL)
SEL304U
NATS (Nissan Anti-Theft System)/RHD MODELS
EL-255

CONSULT DIAGNOSTIC TEST MODE FUNCTION
CONSULT DIAGNOSTIC TEST
MODEDescription
C/U INITIALIZATION When replacing any of the following three components, C/U initialization is necessary.
[NATS ignition key/IMMU/ECM]
SELF-FUNCTION CHECK ECM checks its own NATS communication interface by itself.
SELF-DIAGNOSTIC RESULTS Detected items (screen terms) are as shown in the chart below.
NOTE:
When any initialisation is performed, all ID previously registered will be erased. So all NATS ignition
keys must be registered again.
The engine cannot be started with an unregistered key. In this case, the system may show ``DIFFER-
ENCE OF KEY'' or ``LOCK MODE'' as a self-diagnostic result on the CONSULT screen.
HOW TO READ SELF-DIAGNOSTIC RESULTS
* If trip number is more than 1, MIL does not blink.
SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items (Screen terms) Description Reference page
IMMU ECM received the signal from IMMU that IMMU is malfunctioning. EL-261
ECM ECM is malfunctioning. EL-261
CHAIN OF ECM-IMMU Communication impossible between ECM and IMMU. EL-262
DIFFERENCE OF KEYIMMU can receive the key ID signal but the result of ID veri®cation
between key ID and IMMU is NG.EL-264
CHAIN OF IMMU-KEY IMMU cannot receive the key ID signal. EL-265
ID DISCORD, IMM-ECMThe result of ID veri®cation between IMMU and ECM is NG. System ini-
tialisation is required.EL-266
MINGLE NOISENoise (interference) mingled into NATS communication lines during com-
municating.EL-267
DON'T ERASE BEFORE CHECK-
ING ENG DIAGEngine trouble data and NATS trouble data have been detected in ECM. EL-259
LOCK MODEWhen an unregistered ignition key is used, or if the starting operation is
carried out two or more times consecutively with the ignition key, IMMU
or ECM malfunctioning, NATS will shift the mode to one which prevents
the engine from being started.EL-268
SEL332UC
NATS (Nissan Anti-Theft System)/RHD MODELS
CONSULT (Cont'd)
EL-258

SYMPTOM CHART
SYMPTOMDisplayed ``SELF-DIAG
RESULTS'' on CONSULT
screen.DIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning
part or mode)
+MIL blinking
+Engine can start.IMMUPROCEDURE 1
(EL-261)IMMU
ECMPROCEDURE 2
(EL-261)ECM
+MIL blinking
+Engine hard to startCHAIN OF ECM-IMMUPROCEDURE 3
(EL-262)Open circuit in battery voltage line of IMMU circuit
Open circuit in ignition line of IMMU circuit
Open circuit in ground line of IMMU circuit
Open or short circuit in communication line
between IMMU and ECM
Open circuit in power source line of ANT/AMP cir-
cuit
ECM
IMMU
DIFFERENCE OF KEYPROCEDURE 4
(EL-264)Unregistered key
IMMU
CHAIN OF IMMU-KEYPROCEDURE 5
(EL-265)Open or short circuit in communication line
between ANT/AMP and IMMU
Open circuit in power source line of ANT/AMP cir-
cuit
Open circuit in ground line of ANT/AMP circuit
Malfunction of key ID chip
IMMU
Antenna amp.
ID DISCORD, IMM-ECMPROCEDURE 6
(EL-266)System initialisation has not yet been completed.
ECM
MINGLE NOISEPROCEDURE 7
(EL-267)Noise interference in communication line
+MIL blinking
+Engine hard to start
+NATS security indicator
does not blink for 1 minute
after ignition switch is
turned to ``OFF''.LOCK MODEPROCEDURE 9
(EL-268)LOCK MODE
+MIL staying ONDON'T ERASE BEFORE
CHECKING ENG DIAGWORK FLOW
(EL-259)Engine trouble data and NATS trouble data have
been detected in ECM
+NATS security ind. does not
light up.
+Engine can start.ÐPROCEDURE 8
(EL-267)NATS security ind.
Open circuit between Fuse and NATS IMMU
Continuation of initialisation mode
NATS IMMU
*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part: Stays ON
For single malfunction of an engine-related part: Stays ON
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-260

DIAGNOSTIC PROCEDURE 7
Self-diagnostic results:
``MINGLE NOISE'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``MINGLE NOISE'' dis-
played on CONSULT screen.b
Turn off or remove any possible noise sources.
Touch ``ERASE'' on CONSULT SELF-DIAGNOSTIC RESULTS
screen.
Start engine.
OKNG
END
DIAGNOSTIC PROCEDURE 8
``NATS SECURITY IND. DOES NOT LIGHT UP''
CHECK INDICATOR POWER SUPPLY
CIRCUIT.
Check voltage between security indicator
terminalj
1and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse [No.
24,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
security indicator
Check security indicator.
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
Does security indicator operate after
initialisation has been completed?
Ye s
cNo
Check harness for open or
short between NATS IMMU
and security indicator.
END
SEL384U
SEL385U
SEL552V
.
.
.
.
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-267

DIAGNOSTIC PROCEDURE 9
Self-diagnostic results:
``LOCK MODE'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS
``LOCK MODE'' is displayed on CONSULT
screen.
1. Turn the ignition switch to OFF position
and wait 1 minute.
(After 1 minute, security indicator will
blink.)
2. Turn the ignition key switch to ON posi-
tion with a registered key.
(Do not start engine.) Wait 5 seconds.
3. Return the key to the OFF position.
4. Repeat steps 2 and 3 twice (total of
three cycles).
5. Start the engine.
Does the engine start?
No
cYe s
System is OK.
(Now the system is
escaped from ``LOCK
MODE''.)
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
Can the system be initialised?
Note: If the initialisation is incompleted or
failed, CONSULT shows
mes-
sage on the screen.
No
cYe s
System is OK.
Go to DIAGNOSTIC PROCEDURE 5,
EL-265 to check ``CHAIN OF IMMU-KEY''.
SEL790U
SEL372U
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-268

4. Set No. 1 cylinder at bottom dead center (BDC) on its expan-
sion stroke, as shown.
5. Remove the starter motor and wipe off the liquid gasket remain-
ing on the connecting part.
6. Install the ring gear stopper using the bolt holes for ®xing the
starter motor.
7. Remove crankshaft pulley using puller.
Be sure to securely attach puller jaws. Attach jaws only to the
rear side of pulley.
8. Remove front cover.
9. Remove tensioner spring and loosen belt tensioner lock nut.
10. Remove timing belt.
After removing timing belt, do not turn crankshaft and cam-
shaft separately, because valves will strike piston heads.
SMA768B
SMA769B
SMA770B
TIMING BELT
Removal (Cont'd)
EM-17

Removal and Installation
1. Drain engine coolant.
2. Remove the following:
+Air duct and hoses
+Air intake pipe
+EGR pipe
+Heat shield plates
+Intake manifold
+Front (exhaust) tube
+Oil tube and water tube
3. Remove exhaust manifold with turbocharger from cylinder
head.
4. When installing turbocharger to exhaust manifold, securely
tighten nuts and lock the nuts.
+Turbocharger should not be disassembled.
SEM784F
TURBOCHARGER
EM-24

CAUTION:
+When installing sliding parts such as camshaft and oil
seal, be sure to apply new engine oil on their sliding sur-
faces.
+When tightening cylinder head bolts, apply new engine oil
to thread portions and seat surfaces of bolts.
Removal
1. Remove charge air cooler assembly.
2. Set No. 1 cylinder at BDC on its expansion stroke.
3. Drain engine coolant from drain plugs on cylinder block and
radiator.
4. Remove air cleaner and/or air duct.
5. Remove timing belt.
6. Remove rocker cover securing bolts/nuts in numerical order
shown in ®gure.
To install rocker cover, tighten bolts/nuts in reverse order of
removal. Tighten in two or three stages.
7. Remove camshaft sprocket, injection pump drive sprocket and
back cover.
8. Disconnect exhaust manifold from exhaust tube.
9. Remove intake and exhaust manifold.
To install manifolds, tighten bolts/nuts in reverse order of
removal. Tighten in two or three stages.
SEM786F
SEM711B
SEM431C
CYLINDER HEAD
EM-30