Infiniti QX4 (R50). Manual — part 312
MEL776L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
PARKING, LICENSE AND TAIL LAMPS
Wiring Diagram — TAIL/L — (Cont’d)
EL-65
Trouble Diagnoses
NBEL0164
Symptom
Possible cause
Repair order
No lamps operate (including head-
lamps).
1. 7.5A fuse
2. Lighting switch
3. Headlamp battery saver control
unit
1. Check 7.5A fuse [No. 24, lacated in fuse block
(J/B)]. Verify battery positive voltage is present at
terminal 7 of headlamp battery saver control unit.
2. Check lighting switch.
3. Check headlamp battery saver control unit. (EL-42)
No parking, license and tail lamps
operate, but headlamps do operate.
1. 10A fuse
2. Tail lamp relay
3. Tail lamp relay circuit
4. Lighting switch
5. Lighting switch circuit
6. Headlamp battery saver control
unit
1. Check 10A fuse (No. 61, located in fusible and fuse
block). Verify battery positive voltage is present at
terminals 2 and 3 of tail lamp relay.
2. Check tail lamp relay.
3. Check the following.
a. Harness between headlamp battery saver control
unit terminals 6 and 14 and tail lamp relay terminal
1
b. Harness between tail lamp relay terminal 5 and fuse
block
4. Check lighting switch.
5. Check the following.
a. Harness between lighting switch terminal 11 and
headlamp battery saver control unit terminals 5 and
13
b. Harness between lighting switch terminal 5 and
ground
6. Check headlamp battery saver control unit. (EL-42)
Battery saver control does not
operate properly.
1. RAP signal circuit
2. Driver or passenger side door
switch circuit
3. Lighting switch circuit
4. Headlamp battery saver control
unit
5. Smart entrance control unit
1. Check harness between headlamp battery saver
control unit terminal 10 and smart entrance control
unit terminal 5 for open or short circuit.
2. Check the following.
a. Harness between smart entrance control unit and
driver or passenger side door switch for open or
short circuit
b. Driver or passenger side door switch ground circuit
c. Driver or passenger side door switch.
3. Check the following.
a. Harness between headlamp battery saver control
unit terminals 5 or 13 and lighting switch terminal 11
for open or short circuit
b. Harness between lighting switch terminal 5 and
ground
c. Lighting switch
4. Check headlamp battery saver control unit. (EL-42)
5. Check smart entrance control unit. (EL-324)
PARKING, LICENSE AND TAIL LAMPS
Trouble Diagnoses
EL-66
Wiring Diagram — STOP/L —
NBEL0025
MEL777L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
STOP LAMP
Wiring Diagram — STOP/L —
EL-67
MEL262M
STOP LAMP
Wiring Diagram — STOP/L — (Cont’d)
EL-68
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