2001 INFINITI QX4 IDX

Wiring Diagram Ð BACK/L ÐNBEL0026
MEL778L
GI
MA
EM
LC
EC
FE
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TF
PD
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SU
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ST
RS
BT
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IDX
BACK-UP LAMP
Wiring Diagram Ð BACK/L Ð
EL-69

NOTE:
For Trouble Diagnoses for battery saver control, refer to ªHEADLAMP (FOR USA)º, EL-40.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
FRONT FOG LAMP
System Description (Cont'd)
EL-71

MEL419N
GI
MA
EM
LC
EC
FE
AT
TF
PD
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SU
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ST
RS
BT
HA
SC
IDX
FRONT FOG LAMP
Wiring Diagram Ð F/FOG Ð (Cont'd)
EL-73

System DescriptionNBEL0030TURN SIGNAL OPERATIONNBEL0030S01With the hazard switch in the OFF position and the ignition switch in the ON or START position, power is sup-
plied
Ithrough 7.5A fuse [No. 12, located in the fuse block (J/B)]
Ito hazard switch terminal 2
Ithrough terminal 1 of the hazard switch
Ito combination flasher unit terminal 1
Ithrough terminal 3 of the combination flasher unit
Ito turn signal switch terminal 1.
Ground is supplied to combination flasher unit terminal 2 through body grounds M4, M66 and M147.
LH TurnNBEL0030S0101When the turn signal switch is moved to the LH position, power is supplied from turn signal switch terminal 3
to
Ifront fog lamp LH (turn signal) terminal 2
Icombination meter terminal 25
Irear combination lamp LH terminal 5.
Ground is supplied to the front fog lamp LH (turn signal) terminal 3 through body grounds E13 and E41.
Ground is supplied to the rear combination lamp LH terminal 6 through body grounds B11, B22 and D210.
Ground is supplied to combination meter terminal 30 through body grounds M4, M66 and M147.
With power and ground supplied, the combination flasher unit controls the flashing of the LH turn signal lamps.
RH TurnNBEL0030S0102When the turn signal switch is moved to the RH position, power is supplied from turn signal switch terminal
2to
Ifront fog lamp RH (turn signal) terminal 2
Icombination meter terminal 29
Irear combination lamp RH terminal 5.
Ground is supplied to the front fog lamp RH (turn signal) terminal 3 through body grounds E13 and E41.
Ground is supplied to the rear combination lamp RH terminal 6 through body grounds B55 and B75.
Ground is supplied to combination meter terminal 30 through body grounds M4, M66 and M147.
With power and ground supplied, the combination flasher unit controls the flashing of the RH turn signal lamps.
HAZARD LAMP OPERATIONNBEL0030S02Power is supplied at all times to hazard switch terminal 3 through:
I15A fuse [No. 20, located in the fuse block (J/B)].
With the hazard switch in the ON position, power is supplied
Ithrough terminal 1 of the hazard switch
Ito combination flasher unit terminal 1
Ithrough terminal 3 of the combination flasher unit
Ito hazard switch terminal 4.
Ground is supplied to combination flasher unit terminal 2 through body grounds M4, M66 and M147.
Power is supplied through terminal 5 of the hazard switch to
Ifront fog lamp LH (turn signal) terminal 2
Icombination meter terminal 25
Irear combination lamp LH terminal 5.
Power is supplied through terminal 6 of the hazard switch to
Ifront fog lamp RH (turn signal) terminal 2
Icombination meter terminal 29
Irear combination lamp RH terminal 5.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
TURN SIGNAL AND HAZARD WARNING LAMPS
System Description
EL-75

Wiring Diagram Ð TURN ÐNBEL0032
MEL781L
GI
MA
EM
LC
EC
FE
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TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
TURN SIGNAL AND HAZARD WARNING LAMPS
Wiring Diagram Ð TURN Ð
EL-77

Trouble DiagnosesNBEL0033
Symptom Possible cause Repair order
Turn signal and hazard warning
lamps do not operate.1. Hazard switch
2. Combination flasher unit
3. Open in combination flasher
unit circuit1. Check hazard switch.
2. Refer to combination flasher unit check.
3. Check wiring to combination flasher unit for open
circuit.
Turn signal lamps do not operate
but hazard warning lamps operate.1. 7.5A fuse
2. Hazard switch
3. Combination switch (turn signal)
4. Open in combination switch
(turn signal) circuit1. Check 7.5A fuse [No. 12, located in fuse block
(J/B)]. Turn ignition switch ON and verify battery
positive voltage is present at terminal 2 of hazard
switch.
2. Check hazard switch.
3. Check combination switch (turn signal).
4. Check the wire between combination flasher unit
terminal 3 and combination switch (turn signal) ter-
minal 1 for open circuit.
Hazard warning lamps do not oper-
ate but fog lamps (turn signal)
operate.1. 15A fuse
2. Hazard switch
3. Open in hazard switch circuit1. Check 15A fuse [No. 20, located in fuse block (J/B)].
Verify battery positive voltage is present at terminal
3 of hazard switch.
2. Check hazard switch.
3. Check the wire between combination flasher unit
terminal 3 and hazard switch terminal 4 for open cir-
cuit.
Front fog lamp (turn signal) LH or
RH does not operate.1. Bulb
2. Grounds E13 and E41
3. Open in front fog lamp (turn sig-
nal) circuit1. Check bulb.
2. Check grounds E13 and E41.
3. Check harness between front fog lamp (turn signal)
and combination switch.
Rear combination lamp LH does
not operate.1. Bulb
2. Grounds B11, B22 and D210
3. Open in rear combination lamp
LH circuit1. Check bulb.
2. Check grounds B11, B22 and D210.
3. Check harness between rear combination lamp LH
and hazard switch.
Rear combination lamp RH does
not operate.1. Bulb
2. Grounds B55 and B75
3. Open in rear combination lamp
RH circuit1. Check bulb.
2. Check grounds B55 and B75.
3. Check harness between rear combination lamp RH
and hazard switch.
LH and RH turn indicators do not
operate.1. Ground 1. Check grounds M4, M66 and M147.
LH or RH turn indicator does not
operate.1. Bulb
2. Open in turn indicator circuit1. Check bulb in combination meter.
2. Check harness between combination meter and haz-
ard switch.
SEL122E
Electrical Components InspectionNBEL0034COMBINATION FLASHER UNIT CHECKNBEL0034S01IBefore checking, ensure that bulbs meet specifications.
IConnect a battery and test lamp to the combination flasher
unit, as shown. Combination flasher unit is properly function-
ing if it blinks when power is supplied to the circuit.
GI
MA
EM
LC
EC
FE
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TF
PD
AX
SU
BR
ST
RS
BT
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IDX
TURN SIGNAL AND HAZARD WARNING LAMPS
Trouble Diagnoses
EL-79

Component Connector No. Power terminal Ground terminal
IVCS switch R10 2 12
Display & NAVI control unit M117, M118 8 24
A/C auto amp. M102 24 25
Clock M39 3 4
Globe box lamp M30 1 2
The ground for all of the components except for compass, glove box lamp and ashtray are controlled through
terminals 2 and 3 of the illumination control switch and body grounds M77 and M111.
BATTERY SAVER CONTROLNBEL0035S02When the ignition switch is turned from ON (or START) to OFF (or ACC) positions while illumination lamps
are illuminated, the RAP signal is supplied to terminal 10 of the headlamp battery saver control unit from smart
entrance control unit terminal 5.
After counting 45 seconds by the RAP signal from the smart entrance control unit to headlamp battery saver
control unit, the ground supply to terminal 1 of the tail lamp relay from headlamp battery saver control unit
teminals 6 and 14 is terminated.
Then illumination lamps are turned off.
Illumination lamps are turned off when driver or passenger side door is opened even if 45 seconds have not
passed after the ignition switch is turned from ON (or START) to OFF (or ACC) positions while illumination
lamps are illuminated.
When the lighting switch is turned from OFF to 1ST (or 2ND) after illumination lamps are turned off by the
battery saver control, ground is supplied
Ito headlamp battery saver control unit terminals 5 and 13 from lighting switch terminal 11, and
Ito tail lamp relay terminal 1 from headlamp battery saver control unit terminals 6 and 14.
Then illumination lamps illuminate again.
NOTE:
For Trouble Diagnoses for battery saver control, refer to ªPARKING, LICENSE AND TAIL LAMPSº
(EL-66).
GI
MA
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LC
EC
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PD
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IDX
ILLUMINATION
System Description (Cont'd)
EL-81

Wiring Diagram Ð ILL ÐNBEL0037
MEL005O
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
ILLUMINATION
Wiring Diagram Ð ILL Ð
EL-83