
4 CHECK POWER SUPPLY FOR A/C RELAY
Disconnect A/C relay.
Do approx. 12 volts exist between A/C relay harness terminal Nos. 1, 5 and body ground?
RHA635H
YesorNo
Ye s©GO TO 5.
No©Check power supply circuit and 10A (No. 15) fuse at fuse block. Refer to Sedan: EL-23,
Hatchback: EL-12, ªWiring Diagram Ð POWER к.
5 CHECK A/C RELAY AFTER DISCONNECTING IT
Refer to HA-72.
OK or NG
OK©Reconnect A/C relay. GO TO 6.
NG©Replace A/C relay.
6 CHECK COIL SIDE CIRCUIT OF A/C RELAY
Do approx. 12 volts exist between ECM harness terminal No. 23 and body ground?
NHA510
YesorNo
Ye s©GO TO 8.
No©Disconnect A/C relay. Disconnect ECM harness connector. GO TO 7.
TROUBLE DIAGNOSES
Magnet Clutch (Cont'd)
HA-63

3 CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR HARNESS
Check circuit continuity between A/C relay harness terminal No. 3 and compressor harness terminal No. 1.
RHA634H
Continuity should exist.
If OK, check harness for short.
OK or NG
OK©GO TO 4.
NG©Repair harness or connector.
4 CHECK POWER SUPPLY FOR A/C RELAY
Disconnect A/C relay.
Do approx. 12 volts exist between A/C relay harness terminal Nos. 1, 5 and body ground?
RHA635H
YesorNo
Ye s©GO TO 5.
No©Check power supply circuit and 10A (No. 15) fuse at fuse block. Refer to Sedan: EL-23,
Hatchback: EL-12, ªWiring Diagram Ð POWER к.
5 CHECK A/C RELAY AFTER DISCONNECTING IT
Refer to HA-72.
OK or NG
OK©Reconnect A/C relay. GO TO 6.
NG©Replace A/C relay.
TROUBLE DIAGNOSES
Magnet Clutch (Cont'd)
HA-68

KEY SWITCH (INSERT) CHECK=NJEL0505S11
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between time control unit terminal 22 and ground.
SEL433X
Refer to wiring diagram in EL-200.
OK or NG
OK©Key switch is OK.
NG©GO TO 2.
2 CHECK KEY SWITCH (INSERT)
Check continuity between key switch terminals 1 and 2.
YEL802C
OK or NG
OK©Check the following.
+10A fuse [No. 12, located in fuse block (J/B)]
+Harness for open or short between key switch and fuse
+Harness for open or short between time control unit and key switch
NG©Replace key switch.
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-195

KEY SWITCH (INSERT) CHECK=NJEL0477S10
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between time control unit terminal 22 and ground.
SEL433X
Refer to wiring diagram in EL-200.
OK or NG
OK©Key switch is OK.
NG©GO TO 2.
2 CHECK KEY SWITCH (INSERT)
Check continuity between key switch terminals 1 and 2.
YEL802C
OK or NG
OK©Check the following.
+10A fuse [No. 12, located in fuse block (J/B)]
+Harness for open or short between key switch and fuse
+Harness for open or short between time control unit and key switch
NG©Replace key switch.
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-218

POWER SUPPLY AND GROUND CIRCUIT CHECK=NJEL0482S03
1 CHECK MAIN POWER SUPPLY CIRCUIT FOR TIME CONTROL UNIT
1. Disconnect time control unit harness connector.
2. Check voltage between time control unit harness connector terminal 9 and ground.
SEL487X
Refer to wiring diagram in EL-221.
OK or NG
OK©GO TO 2.
NG©Check the following.
+15A fuse [No. 5, located in fuse block (J/B)]
+Harness for open or short between time control unit and fuse
2 CHECK GROUND CIRCUIT FOR TIME CONTROL UNIT
Check continuity between time control unit harness connector terminal 16 and ground.
SEL448X
Refer to wiring diagram in EL-221.
OK or NG
OK©Power supply and ground circuits are OK.
NG©Check ground harness.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-225

SYMPTOMDisplayed ªSELF-DIAG
RESULTSº 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-241)Engine trouble data and
NATS trouble data have
been detected in ECMÐ
*: When NATS detects trouble, the security indicator lights up while ignition key is in the ªONº 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 ªONº 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-253)Security ind. Ð
Open circuit between Fuse and
IMMUÐ
Continuation of initialization
modeÐ
IMMU A
Security ind. does not blink just
after initialization even if the
vehicle is equipped with dongle
unit.
PROCEDURE 8
(EL-257)NATS might be initialized with-
out connecting dongle unit
properly.Ð
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 (Cont'd)
EL-243

Engine control module (ECM) ....... EC-327, 554,
604, 664, 666, 670, 672
Engine control system diagram and
chart .............................................. EC-26, 503
Engine coolant temperature sensor
(ECTS) ........................................ EC-163, 572
Engine fail-safe system ........................... EC-123
Engine oil precautions .................................. GI-7
Engine outer component parts ................. EM-11
Engine removal ................................ EM-49, 136
Engine room - See Engine
compartment .......................................... BT-75
Engine serial number ................................. GI-41
Evaporative emission (EVAP)
system ................................................... EC-33
Exhaust gas recirculation (EGR)
valve .................................... EC-285, 353, 400
Exhaust system ................................... FE-11, 27
Exterior ...................................................... BT-47
F
F/PUMP - Wiring diagram ....................... EC-466
FR02 - Wiring diagram ... EC-179, 198, 205, 374
FR02/H - Wiring diagram ................ EC-211, 380
FUEL - Wiring diagram ................... EC-250, 257
Fan switch ................................................. HA-60
Final drive (FF A/T) .................................. AT-424
Final drive (FF M/T) .............. MT-43, 77, 93, 107
Finisher, interior - See Trim ....................... BT-31
Finisher, trunk lid ....................................... BT-45
Floor trim ................................................... BT-31
Fluid temperature sensor (A/T) ................ AT-192
Fluids ........................................................ MA-20
Flywheel (clutch) ....................................... CL-22
Flywheel runout ................................ EM-60, 153
Fog lamp, front, removal and
installation ................................................ BT-7
Fog lamp, front .......................................... EL-60
Fork rod (M/T) .............................. MT-32, 56, 94
Forward clutch ......................................... AT-399
Freeze frame data .............................. EC-59, 70
Front axle .................................................... AX-2
Front bumper ............................................... BT-7
Front combination lamp removal and
installation ................................................ BT-7
Front disc brake ........................................ BR-27
Front door .................................................. BT-16
Front fog lamp removal and
installation ................................................ BT-7
Front fog lamp ........................................... EL-60
Front heated oxygen sensor (HO2S)
heater .......................................... EC-209, 379
Front heated oxygen sensor (HO2S) ..... EC-176,
183, 189, 195, 203, 373
Front seat belt ............................................. RS-5
Front seat .................................................. BT-56
Front suspension ........................................ SU-2
Front washer ............................................ EL-123Front wiper ............................................... EL-123
Fuel cut control (at no load & high
engine speed) ............................... EC-33, 507
Fuel gauge ................................................. EL-89
Fuel injection system .............. EC-248, 255, 505
Fuel injector ............................................ EC-446
Fuel precautions ........................................... GI-8
Fuel pressure check ................................. EC-38
Fuel pressure regulator ............................. EC-39
Fuel pressure release ............................... EC-38
Fuel pump relay ...................................... EC-464
Fuel pump ............................................... EC-464
Fuel system ........................................... FE-5, 16
Fuel tank vacuum relief valve ................... EC-34
Fuse block ............................................... EL-369
Fuse ........................................................... EL-22
Fusible link ................................................. EL-22
G
GLOW - Wiring diagram ......................... EC-677
Garage jack and safety stand .................... GI-45
Gauges ...................................................... EL-89
Gear components (M/T) ............... MT-31, 55, 93
Generator - See Alternator ....................... SC-27
Generic scan tool (GST) ........................... EC-92
Glass .......................................................... BT-17
Glow plug ................................................ EC-677
Glow relay ............................................... EC-677
Grease ...................................................... MA-20
Ground distribution .................................... EL-23
H
H/LAMP - Wiring diagram .......................... EL-40
HEATER - Wiring diagram ........................ HA-24
HFC134a (R134a) system
recaution .................................................. HA-2
HFC134a (R134a) system service
procedure .............................................. HA-84
HFC134a (R134a) system service
tools ....................................................... HA-11
HFC134a system service equipment
precaution ................................................ HA-6
HORN - Wiring diagram .......................... EL-135
HSEAT - Wiring diagram ......................... EL-163
Harness connector ...................................... EL-5
Harness layout ......................................... EL-324
Hazard warning lamp ................................ EL-65
Headlamp removal and installation ............. BT-7
Headlamp washer .................................... EL-133
Headlamp .................................................. EL-40
Headlining - See Roof trim ........................ BT-43
Heated oxygen sensor (HO2S)
(front) .......... EC-176, 183, 189, 195, 203, 373
Heated oxygen sensor (HO2S) heater
(front) ........................................... EC-209, 379
ALPHABETICAL INDEX
IDX-4