NISSAN PRIMERA 1999 Electronic Repair Manual

DIAGNOSTIC PROCEDURE 5
(Smash sensor check)
1. Remove time control unit from fuse
block.
Note: Fuse block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the
locking bars.
2. Check harness continuity between
control unit terminal

31and ground.
Continuity should exist.
OK
NG
Check the following.

Smash sensor circuit
for open.

Harness for open
between control unit,
smash sensors and
ground.
1. Disconnect rear window smash sen-
sor connector.
2. Check harness continuity between
control unit and ground.
Continuity should not exist.
NG
OK
Smash sensor is OK.
Check harness for short between con-
trol unit and ground.
YEL457B Time control
unit connector
NEL546 Time control unit connector


THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-339

DIAGNOSTIC PROCEDURE 6
(Theft warning horn alarm check)
CHECK THEFT WARNING HORN
ALARM OPERATION.
1. Remove time control unit from fuse
block.
Note: Fuse block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the
locking bars.
2. Apply ground to control unit connec-
tor terminal

43.
Does horn alarm activate?
Refer to wiring diagram EL-319.
No
Ye s
Horn alarm is OK.
Check theft warning horn relay.
OK
NG
Replace.
CHECK POWER SUPPLY FOR THEFT
WARNING HORN RELAY.
1) Disconnect theft warning horn relay
connector.
2) Check voltage between terminal

2
and ground, and
3and ground.
Battery voltage should exist.
OK
NG
Check the following:

10A fuse (No.16 ,
located in the fuse and
fusible link box)

Harness for open or
short between theft
warning horn relay and
fuse
CHECK THEFT WARNING HORN
RELAY CIRCUIT.
1. Disconnect theft warning horn relay
connector.
2. Check continuity between theft
warning horn relay

1and control
unit terminal

43.
Continuity should exist.
3. Check continuity between theft
warning horn relay

5and theft
warning horn connector terminal

1.
Continuity should exist.
OK
NG
Repair harness.
Check harness for open or short
between theft warning horn relay and
control unit.
YEL465B
Time control unit connector
YEL466B
Theft warning horn
relay connector
YEL467B
Theft warning horn
relay connector




THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-340

DIAGNOSTIC PROCEDURE 7
(Hazard lamp alarm check)
Push hazard switch to ON.
Check hazard lamp operation.
NG
OK
Replace time control unit.
1. Remove time control unit from fuse
block (J/B).
Remove time control unit from fuse
block.
Note: Fuse block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the
locking bars.
2. Check harness continuity between
control unit terminals

11and
15
and ground.
Continuity should exist.
OK
NG
Check the following.

Harness connectors
E104,B96

Fuse block (J/B)

Turn signal lamps
Replace time control unit.
NEL561 Time control unit con-
nector


THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-341

Component Parts Location
YEL039D
NATS (Nissan Anti-Theft System)
EL-342

Wiring Diagram—NATS—
MODELS BEFORE VIN - P11U0548750 (Type-1)
YEL216C
BATTERY BATTERYIGNITION SWITCH
ON or START
FUSE
BLOCK
(J/B)Refer to EL-POWER.
NATS
SECURITY
INDICATORAUDIODONGLE
CONTROL UNIT: With gasoline engine
: With diesel engine
: With GA engine
: With SR engine or
QG engine
: RHD models
: Except
INJECTION
PUMPTIME
CONTROL
UNIT
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
NATS (Nissan Anti-Theft System)
EL-343

MODELS AFTER VIN - P11U0548750 (Type-2)
YEL936C
NATS (Nissan Anti-Theft System)
Wiring Diagram—NATS—(Cont’d)
EL-344

System Description
NATS has the following immobiliser functions:

This version of NATS has dongle unit to improve its anti-theft performance (RHD models for Europe).
Dongle unit has its own ID which is registered into NATS IMMU. So if dongle unit is replaced, initializa-
tion must be carried out.

When malfunction of dongle unit is detected:
The security indicator lamp illuminates for about 15 minutes after ignition switch is turned to ON.
When dongle unit has a malfunction, and the indicator lamp is illuminated, engine can not be started.
However engine can be started only one time when security indicator lamp turns off in about 15 minutes
after ignition switch is turned to ON.

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.

All of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of five 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 security indicator lamp lights up as follows.
Condition IGN ON andWith dongle Without dongle
MIL Security indicator MIL Security indicator
NATS malfunction
(except dongle unit) is
detected—6 times blinking
Staying ON after igni-
tion switch is turned
ON—Staying ON
Only malfunction of
dongle unit is detected.—Staying ON for about
15 minutes after igni-
tion switch is turned
ON——
Malfunction of NATS
and engine related
parts are detected.Staying ON6 times blinking
Staying ON after igni-
tion switch is turned
ONStaying ON Staying ON
Only engine related
part malfunction is
detected.Staying ON—Staying ON—
Just after initialization
of NATS—6 times blinking——

NATS trouble diagnoses, system initialisation and additional registration of other NATS ignition key IDs
must be carried out using CONSULT-II hardware and CONSULT-II NATS software.
Regarding the procedures of NATS initialisation and NATS ignition key ID registration, refer to CON-
SULT-II operation manual, NATS.

When servicing a malfunction of the NATS (indicated by lighting up of security Indicator Lamp)
or registering another NATS ignition key ID no., it may be necessary to re-register original key
identification. Therefore, be sure to receive all keys and the PIN code from vehicle owner.
NATS (Nissan Anti-Theft System)
EL-345

System Composition
The immobiliser function of the NATS for Nissan model P11 consists of the following:

NATS ignition key

NATS immobiliser control unit (NATS IMMU), located in the ignition key cylinder

Engine control module (ECM)

Dongle unit (RHD models for Europe)

NATS security indicator

NATS audio link
NEL558 NATS ignition key
NATS IMMUNATS security ind
ECM
DONGLE UNIT
(RHD models for Europe)
AUDIO
NATS (Nissan Anti-Theft System)
EL-346

CONSULT-II
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect“CONSULT-II”to Data link connector.
3. Insert NATS program card into CONSULT-II.
: Program card
NATS (AEN00B)
4. Turn ignition switch ON.
5. Touch“START”.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation
Manual, NATS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
CONSULT-II DIAGNOSTIC TEST
MODEDescription
C/U INITIALIZATION When replacing any of the following components, C/U initialization is necessary.
[NATS ignition key/IMMU/ECM/Dongle]
SELF-DIAGNOSTIC RESULTS Detected items (screen terms) are as shown in the chart below.
NOTE:
When any initialisation is performed, all ID previously regis-
tered will be erased and all NATS ignition keys must be reg-
istered again.
The engine cannot be started with an unregistered key. In
this case, the system may show“DIFFERENCE OF KEY”or
“LOCK MODE”as a self-diagnostic result on the CON-
SULT-II screen.
When initialisation is performed for RHD models for Europe,
security indicator will flash six times to demonstrate recog-
nition of dongle ID.
NRS071 Data link connector
PBR455D
SEL150X
NATS (Nissan Anti-Theft System)
EL-347

HOW TO READ SELF-DIAGNOSTIC RESULTS
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
(NATS program card screen
terms)P No. Code
(Self-diagnos-
tic result of
“ENGINE”)Malfunction is detected when ...Reference
page
ECM INT CIRC-IMMUNATS MAL-
FUNCTION
P1613The malfunction of ECM internal circuit of IMMU communication line is
detected.EL-352
CHAIN OF ECM-IMMUNATS MAL-
FUNCTION
P1612Communication impossible between ECM and IMMU EL-353
DIFFERENCE OF KEYNATS MAL-
FUNCTION
P1615IMMU can receive the key ID signal but the result of ID verification
between key ID and IMMU is NG.EL-355
CHAIN OF IMMU-KEYNATS MAL-
FUNCTION
P1614IMMU cannot receive the key ID signal. Or the registered ID signal from
dongle unit can not be received when the IMMU request the ID.EL-356
ID DISCORD, IMM-ECMNATS MAL-
FUNCTION
P1611The result of ID verification between IMMU and ECM is NG. System ini-
tialization is required.EL-358
DON’T ERASE BEFORE
CHECKING ENG DIAG—All engine trouble codes except NATS trouble code have been detected
in ECM.EL-349
LOCK MODENATS MAL-
FUNCTION
P1610When the starting operation is carried out five or more times consecu-
tively under the following conditions, NATS will shift the mode to one
which prevents the engine from being started.

Unregistered ignition key is used.
IMMU or ECM is malfunctioning.EL-361
SEL308W
NATS (Nissan Anti-Theft System)
CONSULT-II (Cont’d)
EL-348