2001 INFINITI QX4 fuse

SYMPTOM MATRIX CHART 2NBEL0224S03(Non self-diagnosis related item)
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)
Security ind. does not light up.PROCEDURE 6
(EL-344)Security ind.
Open circuit between Fuse and IMMU
Continuation of initialization mode
IMMU
DIAGNOSTIC SYSTEM DIAGRAMNBEL0224S04
SEL087WD
SEL365X
DIAGNOSTIC PROCEDURE 1NBEL0224S05Self-diagnostic results:
ªECM INT CIRC-IMMUº displayed on CONSULT-II screen
1. Confirm SELF-DIAGNOSTIC RESULTS ªECM INT CIRC-
IMMUº displayed on CONSULT-II screen. Ref. part No. B.
2. Replace ECM.
3. Perform initialization with CONSULT-II.
For initialization, refer to ªCONSULT-II operation manual
IVIS/NVISº.
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses (Cont'd)
EL-336

DIAGNOSTIC PROCEDURE 2=NBEL0224S06Self-diagnostic results:
ªCHAIN OF ECM-IMMUº displayed on CONSULT-II screen
1 CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS ªCHAIN OF ECM-IMMUº displayed on CONSULT-II screen.
NOTE:
In rare case, ªCHAIN OF ECM-IMMUº might be stored during key registration procedure, even if the system is not mal-
functioning.
SEL366X
Is CONSULT-II screen displayed as above?
Ye s©GO TO 2.
No©GO TO SYMPTOM MATRIX CHART 1.
2 CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU connector.
2. Check voltage between terminal 8 of IMMU and ground with CONSULT-II or tester.
SEL302WD
OK or NG
OK©GO TO 3.
NG©Check the following
I7.5A fuse (No. 62, located in the fuse and fusible link box)
IHarness for open or short between fuse and IMMU connector
Ref. Part No. C1
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses (Cont'd)
EL-337

3 CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between terminal 7 of IMMU and ground with CONSULT-II or tester.
SEL303WF
OK or NG
OK©GO TO 4.
NG©Check the following
I10A fuse [No. 16, located in the fuse block (J/B)]
IHarness for open or short between fuse and IMMU connector
Ref. part No. C2
4 CHECK GROUND CIRCUIT FOR IMMU
1. Turn ignition OFF.
2. Check harness continuity between IMMU terminal 4 and ground.
SEL304WD
OK or NG
OK©GO TO 5.
NG©Repair harness.Ref. part No. C3
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses (Cont'd)
EL-338

DIAGNOSTIC PROCEDURE 6=NBEL0224S10ªSECURITY INDICATOR LAMP DOES NOT LIGHT UPº
1 CHECK FUSE
Check 10A fuse [No. 12, located in the fuse block (J/B)].
Is 10A fuse OK?
Ye s©GO TO 2.
No©Replace fuse.
2 CHECK SECURITY INDICATOR LAMP
1. Install 10A fuse.
2. Perform initialization with CONSULT-II.
For initialization, refer to ªCONSULT-II Operation Manual IVIS/NVISº.
3. Turn ignition switch OFF.
4. Start engine and turn ignition switch OFF.
5. Check the security indicator lamp lighting.
Security indicator lamp should be blinking.
OK or NG
OK©INSPECTION END
NG©GO TO 3.
3 CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp connector.
2. Check voltage between security indicator lamp connector terminal 1 and ground.
SEL370X
OK or NG
OK©GO TO 4.
NG©Check harness for open or short between fuse and security indicator lamp.
4 CHECK SECURITY INDICATOR LAMP
Check security Indicator Lamp.
Is security indicator lamp OK?
Ye s©GO TO 5.
No©Replace security indicator lamp.
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses (Cont'd)
EL-344

SEL976VA
POWER SUPPLY AND GROUND CIRCUIT FOR IVCS
UNIT CHECK
NBEL0184S05Main Power Supply Circuit CheckNBEL0184S0501
Terminal Ignition switch
(+) (þ) OFF ACC ON
18 GroundBattery volt-
ageBattery volt-
ageBattery volt-
age
2 Ground 0V 0VBattery volt-
age
If NG, check the following:
I15A fuse [No. 4, located in fuse and fusible link box]
I7.5A fuse [No. 11, located in fuse block (J/B)]
IHarness for open or short between fuse and IVCS unit
SEL519VB
Ground Circuit CheckNBEL0184S0502
Terminals Continuity
17 - Ground Yes
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INFINITI COMMUNICATOR (IVCS)
Trouble Diagnoses (Cont'd)
EL-371

INDICATOR LAMPS CHECK=NBEL0184S06
1 CHECK POWER SUPPLY FOR INDICATOR LAMPS
Check voltage between IVCS switch terminal 1 and ground.
SEL372X
OK or NG
OK©GO TO 2.
NG©Check the following.
I15A fuse [No. 4, located in fuse block (J/B)]
IHarness for open or short between fuse and IVCS switch
2 CHECK INDICATOR LAMPS
1. Disconnect IVCS unit connector (Control unit connector).
2. Apply ground to IVCS switch each terminal and check illumination.
SEL373X
OK or NG
OK©Check harness for open or short between indicators and IVCS unit.
NG©Replace IVCS switch assembly.
INFINITI COMMUNICATOR (IVCS)
Trouble Diagnoses (Cont'd)
EL-372

TELEPHONE STEERING SWITCH CHECK=NBEL0184S14
1 CHECK POWER SUPPLY FOR STEERING SWITCH
Check power supply for steering switch.
Does horn work?
Ye s©Check the following.
I10A fuse (No. 54, located in fuse and fusible link box)
IHorn relay
IHarness for open or short
No©GO TO 2.
2 CHECK STEERING SWITCH SUB-HARNESS
1. Remove driver's air bag module. For removal procedure, refer to RS section.
2. Check steering switch sub-harness for open or short and ground screw.
For details of the harness circuit, refer to ªSTEERING SWITCHº, EL-30.
OK or NG
OK©Check harness for open or short between telephone steering switch and IVCS unit. If the
circuit is OK, replace telephone steering switch.
NG©Replace or repair the harness.
Trouble Diagnoses for Intermittent IncidentNBEL0185DESCRIPTIONNBEL0185S01An intermittent incident may be occurring if all of the following conditions exist.
IBoth ªMAYDAYº emergency and ªINFORMATIONº indicators have shown that the system is malfunction-
ing.
ICONSULT-II self-diagnosis result screen indicates a trouble code with ªTIME=1orgreaterº.
IThe INFINITI Communicator system has not been previously serviced.
To find out the cause of a malfunction, follow the procedures shown below.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INFINITI COMMUNICATOR (IVCS)
Trouble Diagnoses (Cont'd)
EL-377

SEL693VD
POWER SUPPLY AND GROUND CIRCUIT CHECK FOR
DISPLAY & NAVI CONTROL UNIT
=NBEL0234S04Power Supply Circuit CheckNBEL0234S0401
Terminal Ignition switch
(+) (þ) OFF ACC ON
1 Ground Battery voltage Battery voltage Battery voltage
2 Ground Battery voltage Battery voltage Battery voltage
5 Ground 0V 0V Battery voltage
6 Ground 0V Battery voltage Battery voltage
If NG, check the following.
I7.5A fuse [No. 11, located in the fuse block (J/B)]
I10A fuse [No. 10, located in the fuse block (J/B)]
I15A fuse [No. 4, located in the fuse block (J/B)]
IHarness for open or short between fuse and display & NAVI
control unit
SEL694VD
Ground Circuit CheckNBEL0234S0402
Terminals Continuity
3 - Ground Yes
4 - Ground Yes
NAVIGATION SYSTEM
Trouble diagnoses (Cont'd)
EL-420