Page 1759 of 1833

Before starting trouble diagnoses below, perform ªPRELIMINARY CHECKº, EL-265.
Symptom numbers in the symptom chart correspond with those of Preliminary check.
SYMPTOM CHART
ProcedureÐPower supply
and ground cir- cuit check Diagnostic procedure Ð Ð
REFERENCE PAGE
EL-265
EL-267
EL-267
EL-268
EL-270
EL-271
EL-272
EL-273
EL-274
EL-204
EL-222
SYMPTOMPreliminary check
Power supply circuit check
Ground circuit check
Diagnostic Procedure 1
(Door, hood and back door switch check)
Diagnostic Procedure 2
(Security indicator lamp check)
Diagnostic Procedure 3
(Door unlock sensor check)
Diagnostic Procedure 4
(Door key cylinder switch check)
Diagnostic Procedure 5
(Theft warning horn alarm check)
Diagnostic procedure 6
(Hazard lamp alarm check)
Check ªMULTI-REMOTE
CONTROLº system.
Check ªNATS (Nissan Anti-Theft system)º.
1 Security indicator does not turn ªONº or
blinking. XXX X
2 Theft
warning
system
cannot
be set
by... All items
XXXX X
Door out side key X X X X
Multi-remote control X X X X
3 *1 Theft
warning
system
does not
alarm
when... Any door is opened.
XXXX
Any door is unlocked with-
out using key or multi-re-
mote controller XXX
X
4 Theft
warning
alarm
does not
activate. All function
XXXX X
Horn alarm X X X X
Hazard lamp X X X X
5 Theft
warning
system
cannot be
canceled
by... Turning the ignition ON *2 X X X
X
Multi-remote controller X X X X
X: Applicable
*1: Make sure the system is in the armed phase.
*2: Make sure the key is NATS registered.
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-266
http://vnx.su/
Page 1765 of 1833
DIAGNOSTIC PROCEDURE 4
(Door key cylinder switch check)
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Check voltage between time control unit
connector terminal
U29and ground.
NG
EOKDoor key cylinder switch is
OK.
CHECK DOOR KEY CYLINDER
SWITCH.
1. Disconnect door key cylinder switch
connector.
2. Check continuity between door key cylinder switch terminals.
OK
ENG Replace key cylinder
switch.
Check the following:
IHarness connectors between key cylin-
der switch and time control unit
I Door key cylinder switch ground circuit
I Harness for open or short-circuit
between time control unit and door key
cylinder.
Key cylinder switch operation Voltage (V)
Lock 0
Unlock/neutral 5
Terminals Key position Continuity
q
1-q2Unlock/neutral No
Lock Yes
YEL907E
NEL614
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-272
http://vnx.su/
Page 1819 of 1833

Use the chart below to find out what each wiring
diagram code stands for.
Refer to the wiring diagram code in the alphabetical
index to find the location (page number) of each
wiring diagram.
Code Section Wiring Diagram Name
A/C, M HA MANUAL AIR CONDITIONER
A/CCUT EC AIR CONDITIONER CUT CONTROL
ABS BR ANTI-LOCK BRAKE SYSTEM
ACC/SW EC ACCELERATOR SWITCH (FC)
APS AT, EC ACCELERATOR POSITION SEN-
SOR
AT/C EC A/T CONTROL
AUDIO EL AUDIO
BA/FTS AT A/T FLUID TEMPERATURE SEN-
SOR AND TCM POWER SUPPLY
BACK/L EL BACK-UP LAMP
BOOST EC TURBOCHARGER BOOST SEN-
SOR
BRK/SW EC BRAKE SWITCH
CHARGE SC CHARGING SYSTEM
CHIME EL WARNING CHIME
CIGAR EL CIGARETTE LIGHTER
CKPS EC CRANK SHAFT POSITION SEN-
SOR (OBD)
CLOCK EL CLOCK
COOL/F EC COOLING FAN CONTROL
D/LOCK EL POWER DOOR LOCK
DEF EL REAR WINDOW DEFOGGER
DTRL EL HEADLAMP Ð WITH DAYTIME
LIGHT SYSTEM
ECMRLY EC ECM RELAY
ECTS EC ENGINE COOLANT TEMPERA-
TURE SENSOR
EGRC/V EC EGR VALVE AND EVAP CANISTER
PURGE CONTROL SOLENOID
VA LV E
EGVC/V EC EGR VOLUME CONTROL VALVE
ENGSS AT ENGINE SPEED SIGNAL
F/FOG EL FRONT FOG LAMP
FTS AT A/T FLUID TEMPERATURE SEN-
SOR
GLOW EC QUICK GLOW SYSTEM
H/AIM EL HEADLAMP AIMING CONTROL
SYSTEM
H/LAMP EL HEADLAMP
HEATER HA HEATER SYSTEM
Code Section Wiring Diagram Name
HEATUP EC HEAT UP SWITCH
HLC EL HEADLAMP CLEANER
HORN EL HORN
HSEAT EL HEATED SEAT
ILL EL ILLUMINATION
INJPMP EC ELECTRONIC CONTROL FUEL
INJECTION PUMP
INT/L EL INTERIOR AND MAP LAMPS
INT/V EC INTAKE AIR CONTROL VALVE
CONTROL SOLENOID VALVE
LPSV AT LINE PRESSURE SOLENOID
VA LV E
MAFS EC MASS AIR FLOW SENSOR
MAIN AT MAIN POWER SUPPLY AND
GROUND CIRCUIT
MAIN EC MAIN POWER SUPPLY AND
GROUND CIRCUIT
METER EL SPEEDOMETER, TACHOMETER,
TEMP. AND FUEL GAUGES
MIL EC MALFUNCTION INDICATOR
MIL/DL EC MIL AND DATA LINK CONNEC-
TORS
MIRROR EL DOOR MIRROR
MULTI EL REMOTE KEYLESS ENTRY SYS-
TEM
NATS EL NISSAN ANTI-THEFT SYSTEM
NLS EC NEEDLE LIFT SENSOR
NONDTC AT NON-DETECTABLE ITEMS
OILPSW EC OIL PRESSURE SWITCH
OILP/W EC OIL PRESSURE WARNING
OVRCSV AT OVER RUN CLUTCH SOLENOID
VA LV E
PNP/SW AT PARK/NEUTRAL POSITION
SWITCH
PNP/SW EC NEUTRAL POSITION SWITCH
R/FOG EL REAR FOG LAMP
REMOTE EL AUDIO (REMOTE CONTROL
SWITCH)
S/LOCK EL POWER DOOR LOCK-SUPER
LOCK
S/SIG EC START SIGNAL
SROOF EL SUNROOF
SRS RS SUPPLEMENTAL RESTRAINT SYS-
TEM
SSV/A AT SHIFT SOLENOID VALVE A
SSV/B AT SHIFT SOLENOID VALVE B
WIRING DIAGRAM CODES (CELL CODES)
EL-326
http://vnx.su/