2003 NISSAN ALMERA N16 nats

3 CHECK INTERFACE CIRCUIT
1. Disconnect dongle unit and IMMU (Smart entrance control unit) harness connector.
2. Check continuity between IMMU (Smart entrance control unit) harness connector M193 terminal 9 (PU) and dongle unit
harness connector M102 terminal 7 (PU).
SIIA1675E
Continuity should exist.
3. Check continuity between (Smart entrance control unit) harness connector M193 terminal 9 (PU) and ground.
Continuity should not exist.
OK or NG
OKDongle unit is malfunctioning.
1. Replace dongle unit.
2. Perform initialization with CONSULT-II.
For initialization procedure, refer to “CONSULT-II Operation Manual NATS”.
NG Repair harness.
DIAGNOSTIC PROCEDURE 9NJEL0590S13M/T ModelsNJEL0590S1301
1 CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU (Smart entrance control unit) connector.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M195 terminal 58 (B/W) and ground
with CONSULT-II or tester.
SIIA1684E
Ignition switch START position:
Battery voltage should exist.
Ignition switch OFF position: 0V
OK or NG
OK GO TO 2.
NGCheck the following
Ignition switch
Harness for open or short between ignition switch and IMMU (Smart entrancecontrol
unit)
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-408

2 CHECK START SIGNAL
1. Turn ignition switch START.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M195 terminal 59 (B/Y) and ground with
CONSULT-II or tester.
SIIA1685E
Battery voltage should exist.
OK or NG
OK GO TO 3.
NG Replace IMMU (Smart entrance control unit).
3 CHECK STARTER CIRCUIT FOR IMMU
1. Turn ignition OFF.
2. Disconnect IMMU (Smart entrance control unit) harness connector and starter motor harness connector.
3. Check continuity between IMMU (Smart entrance control unit) harness connector M195 terminal 59 (B/Y) and starter
motor harness connector F19 (TD), F41 (QG) or F42 (GC) terminal 1 (B/Y).
SIIA1686E
Continuity should exist.
OK or NG
OK Check starter motor. Refer to SC-13, “STARTING SYSTEM”.
NG Harness for open or short between IMMU (Smart entrance control unit) andstarter
motor.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-409

A/T, CVT ModelsNJEL0590S1302
1 CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU (Smart entrance control unit) connector.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M195 terminal 59 (B/W) and ground
with CONSULT-II or tester.
SIIA1687E
Battery voltage should exist.
OK or NG
OK GO TO 2.
NGCheck the following
Park/neutral position relay
Harness for open or short between park/neutral position relay and IMMU
2 CHECK START SIGNAL
1. Connect IMMU (Smart entrance control unit) connector.
2. Check voltage between IMMU (Smart entrance control unit) harness connector M195 terminal 58 (P) and ground with
CONSULT-II or tester.
SIIA1688E
Battery voltage should exist.
OK or NG
OK GO TO 3.
NG Replace IMMU (Smart entrance control unit).
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-410

3 CHECK STARTER CIRCUIT FOR IMMU
1. Disconnect IMMU (Smart entrance control unit) connector and park/neutral position switch connector.
2. Check continuity between IMMU (Smart entrance control unit) harness connector M195 terminal 58 (P) and park/neutral
position switch harness connector F17 terminal 1 (P).
SIIA1689E
Continuity should exist.
OK or NG
OK Check starter motor. Refer to SC-13, “STARTING SYSTEM”.
NG Harness for open or short between IMMU (Smart entrance control unit) andpark/neutral
position switch.
SIIA1683E
How to Replace NATS Antenna AmpNJEL0591NOTE:
If NATS antenna amp. is not installed correctly, NATS sys-
tem will not operate properly and SELF-DIAG RESULTS on
CONSULT-II screen will show “LOCK MODE” or “CHAIN
OF IMMU- KEY”.
Initialization is not necessary only when NATS antenna
amp. is replaced with a new one.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/QG and YD Engine Models with Common Rail (Cont’d)
EL-411

Trouble Diagnoses/YD Engine Models without
Common Rail and K9K Engine Models
NJEL0411WORK FLOWNJEL0411S01
SEL729WE
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models
EL-412

SYMPTOM MATRIX CHART 1NJEL0411S02(Self-diagnosis related item)
SYMPTOMDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or
mode)REFERENCE PART
NO. OF ILLUSTRATION
ON SYSTEM DIAGRAM
Security indicator
lighting up*
Engine cannot be
startedECM INT CIRC-IMMUPROCEDURE 1
(EL-415)ECM B
CHAIN OF ECM-IMMUPROCEDURE 2
(EL-416)In rare case, “CHAIN
OF ECM-IMMU” might
be stored during key
registration procedure,
even if the system is not
malfunctioning.—
Open circuit in battery
voltage line of IMMU
circuitC1
Open circuit in ignition
line of IMMU circuitC2
Open circuit in ground
line of IMMU circuitC3
Open circuit in commu-
nication line between
IMMU and ECMC4
Short circuit between
IMMU and ECM com-
munication line and bat-
tery voltage lineC4
Short circuit between
IMMU and ECM com-
munication line and
ground lineC4
ECM B
IMMU A
DIFFERENCE OF KEYPROCEDURE 3
(EL-420)Unregistered key D
IMMU A
CHAIN OF IMMU-KEYPROCEDURE 4
(EL-421)Malfunction of key ID
chipE
IMMU A
Open circuit in ground
line of dongle unit circuitC6
Open or short circuit in
line between IMMU and
dongle unitC5
Dongle unit G
ID DISCORD, IMM-ECMPROCEDURE 5
(EL-423)System initialization has
not yet been completed.F
ECM B
LOCK MODEPROCEDURE 7
(EL-426)LOCK MODE D
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-413

SYMPTOMDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or
mode)REFERENCE PART
NO. OF ILLUSTRATION
ON SYSTEM DIAGRAM
MIL staying ON
Security indicator
lighting up*DON’T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(EL-412)Engine trouble data and
NATS trouble data have
been detected in ECM—
*: When NATS detects trouble, the security indicator lights up while ignition key is in the “ON” position.
*: When the vehicle is equipped with a dongle unit (RHD models for Europe), the security indicator blinks 6 times just after the ignition
switch is turned to ON. Then the security indicator lights up while the ignition key is in the “ON” position.
SYMPTOM MATRIX CHART 2NJEL0411S03(Non self-diagnosis related item)
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)REFERENCE PART NO. OF
ILLUSTRATION ON SYSTEM
DIAGRAM
Security ind. does not light up.PROCEDURE 6
(EL-424)Security ind. —
Open circuit between Fuse and
IMMU—
Continuation of initialization
mode—
IMMU A
Security ind. does not blink just
after initialization even if the
vehicle is equipped with dongle
unit.
PROCEDURE 8
(EL-428)NATS might be initialized with-
out connecting dongle unit
properly.—
Open circuit in ground line of
dongle unit circuitC6
Security ind. does not blink just
after ignition switch is turned to
ON when some malfunction
related to NATS is detected
even if the vehicle is equipped
with dongle unit.Open or short circuit in com-
munication line between IMMU
and dongle unitC5
Dongle unit G
DIAGNOSTIC SYSTEM DIAGRAMNJEL0411S04
SEL028X
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-414

SEL152X
DIAGNOSTIC PROCEDURE 1NJEL0411S05Self-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. Ref. part No. B.
2. Replace ECM.
3. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual
NATS”.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-415