Infiniti Q45. Manual — part 620
REAR WINDOW DEFOGGER
GW-73
C
D
E
F
G
H
J
K
L
M
A
B
GW
4.
CHECK REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY GROUND HARNESS
1.
Turn ignition switch ON.
2.
Turn rear window defogger switch OFF.
3.
Installation rear window defogger and door mirror defogger relay.
4.
Check voltage between BCM connector B4 terminal 144 and
ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 6.
5.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect condenser and rear window defogger remove door mirror defogger relay connectors.
3.
Check continuity between condenser B25 terminal 1 and rear
window and door mirror defogger relay connector B8 terminal 7.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness.
6.
CHECK BCM HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect BCM and rear window defogger and door mirror defogger relay connectors.
3.
Check continuity between BCM connector B4 terminal 144 and
rear window defogger and door mirror defogger relay connector
B8 terminal 2.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness.
144 (G/W) – Ground
: Battery voltage
PIIA0211E
1 (LR) – 7 (L/R)
:Continuity should exist.
PIIA3520E
144 (G/W) – 2 (G/W)
:Continuity should exist.
PIIA3516E
GW-74
REAR WINDOW DEFOGGER
Check Rear Window Defogger Circuit
NIS000ZP
1.
CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger connector.
3.
Turn ignition switch ON.
4.
Check voltage between rear window defogger connector and ground.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK REAR WINDOW DEFOGGER GROUND HARNESS
1.
Turn ignition switch OFF.
2.
Check continuity between rear window defogger connector
B421 terminal 1 and ground.
OK or NG
OK
.
●
If filament is OK, check the condition of the harness
and the connector.
●
If filament is NG, repair filament.
NG
>> Repair or replace harness.
3.
CHECK CONDENSER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect condenser connector.
3.
Turn ignition switch ON.
4.
Check voltage between condenser connector and ground.
OK or NG
OK
>> Repair or replace harness.
NG
>> GO TO 4.
Connector
Terminal
(Wire color)
Condition of rear
window defogger switch
Voltage [V]
(Approx.)
(+)
(–)
B181
2 (B)
Ground
ON
Battery voltage
OFF
0
PIIA3517E
1 (B)
−
Ground
:Continuity should exist
PIIA3518E
Con-
nector
Terminal
(Wire color)
Condition of rear window
defogger switch
Voltage [V]
(Approx.)
(+)
(–)
B25
1 (L/R)
Ground
ON
Battery voltage
OFF
0
PIIA3519E
REAR WINDOW DEFOGGER
GW-75
C
D
E
F
G
H
J
K
L
M
A
B
GW
4.
CHECK CONDENSER HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger and door mirror defogger relay connector.
3.
Check continuity between condenser connector B25 terminal 1
and rear window defogger and door mirror defogger relay con-
nector B8 terminal 7.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness.
Check Door Mirror Defogger Power Supply Circuit
NIS000ZQ
1.
CHECK FUSE
Check if any of the following fuses for Fuse block (J/B) are blown.
NOTE:
Refer to
GW-61, "Component Parts and Harness Connector Location"
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, make sure to eliminate cause of malfunction before installing new fuse, refer to
.
2.
CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Remove door mirror defogger relay.
3.
Turn ignition switch ON.
4.
Check voltage between door mirror defogger relay connector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
1 (L/R) – 7 (L/R)
:Continuity should exist.
PIIA3520E
System
Terminal No.
Power source
Fuse No.
Ampere (A)
Door mirror defogger
3A
ACC power supply
4
10
Connector
Terminal
(Wire color)
Condition of rear
window defogger
switch
Voltage [V]
(Approx.)
(+)
(–)
B10
2 (L/R)
Ground
ON
Battery voltage
OFF
0
PIIA2896E
GW-76
REAR WINDOW DEFOGGER
3.
CHECK DOOR MIRROR DEFOGGER RELAY
Check continuity between door mirror defogger relay terminals 3 and 5.
OK or NG
OK
>> GO TO 4.
NG
>> Replace door mirror defogger relay.
4.
CHECK DOOR MIRROR DEFOGGER RELAY GROUND HARNESS
1.
Turn ignition switch OFF.
2.
Check continuity between door mirror defogger relay connector
B10 terminal 1 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness.
5.
CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 2
Check voltage between door mirror defogger relay connector B10
terminal 5 and ground.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace harness.
Terminal
Condition
Continuity
3
5
12V direct current supply
between terminals 1 to 2
Yes
No current supply
No
PIIA2636E
1 (B)
−
Ground
:Continuity should exist
PIIA2897E
5 (P/B) – Ground
: Battery voltage
PIIA2898E
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