Infiniti QX4 (R50). Manual — part 315
Wiring Diagram — TURN —
NBEL0032
MEL781L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
TURN SIGNAL AND HAZARD WARNING LAMPS
Wiring Diagram — TURN —
EL-77
MEL782L
TURN SIGNAL AND HAZARD WARNING LAMPS
Wiring Diagram — TURN — (Cont’d)
EL-78
Trouble Diagnoses
NBEL0033
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 circuit
1. 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) circuit
1. 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 circuit
1. 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) circuit
1. 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 circuit
1. 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 circuit
1. 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 circuit
1. Check bulb in combination meter.
2. Check harness between combination meter and haz-
ard switch.
SEL122E
Electrical Components Inspection
NBEL0034
COMBINATION FLASHER UNIT CHECK
NBEL0034S01
I
Before checking, ensure that bulbs meet specifications.
I
Connect 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
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
TURN SIGNAL AND HAZARD WARNING LAMPS
Trouble Diagnoses
EL-79
System Description
NBEL0035
The illumination lamp operation is controlled by the lighting switch which is built into the combination switch
and headlamp battery saver control unit. The battery saver system is controlled by the headlamp battery saver
control unit and smart entrance control unit.
Power is supplied at all times
I
to tail lamp relay terminals 2 and 3
I
through 10A fuse (No. 61, located in the fuse and fusible link box), and
I
to headlamp battery saver control unit terminal 7, and
I
to smart entrance control unit terminal 10
I
through 7.5A fuse [No. 24, located in the fuse block (J/B)].
When ignition switch is in ON or START position, power is supplied
I
to headlamp battery saver control unit terminal 1
I
through 10A fuse [No. 16, located in the fuse block (J/B)], and
I
to headlamp battery saver control unit terminal 10, and
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to smart entrance control unit terminal 33
I
through 7.5A fuse [No. 11, located in the fuse block (J/B)].
Ground is supplied to headlamp battery saver control unit terminals 4 and 11.
LIGHTING OPERATION BY LIGHTING SWITCH
NBEL0035S01
When lighting switch is 1ST (or 2ND) position, ground is supplied
I
to tail lamp relay terminal 1 from headlamp battery saver control unit terminals 6 and 14
I
through headlamp battery saver control unit terminals 5 and 13, and
I
through body grounds E13 and E41.
Tail lamp relay is then energized and illumination lamps illuminate.
The lighting switch must be in the 1ST or 2ND position for illumination.
LIGHTING OPERATION BY AUTO LIGHT CONTROL SYSTEM
NBEL0035S03
When auto light operation is operated, ground is supplied
I
to tail lamp relay terminal 1 from headlamp battery saver control unit terminals 6 and 14
I
through headlamp battery saver control unit terminals 5 and 13, and
I
through auto light control unit terminal 7.
Tail lamp relay is then energized and the illumination lamps illuminate.
The illumination control switch that controls the amount of current to the illumination system. As the amount
of current increases, the illumination becomes brighter.
The following chart shows the power and ground connector terminals for the components included in the illu-
mination system.
Component
Connector No.
Power terminal
Ground terminal
Illumination control switch
M19
1
3
4WD shift switch
M141
7
8
Ashtray
M54
1
2
A/T indicator
B59
3
4
Cigarette lighter
M57
3
4
Audio unit
M48
8
7
Compass and thermometer
R4
5
2
Hazard switch
M35
7
8
Rear window defogger switch
M36
5
6
Headlamp aiming switch
M16
3
4
Power window main switch
D6
16
18
Front power window switch RH
D36
10
17
ILLUMINATION
System Description
EL-80
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