Infiniti M45 (Y34). Manual — part 590
REAR WINDOW DEFOGGER
GW-71
C
D
E
F
G
H
J
K
L
M
A
B
GW
2.
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT
INSPECTION
1.
Disconnect rear window defogger and door mirror defogger
relay.
2.
Turn ignition switch ON.
3.
Check voltage between rear window defogger and door mirror
defogger relay harness connector B8 terminal 1 (W/G) and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between fuse block (J/B) and
rear window defogger and door mirror defogger relay.
3.
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY INSPECTION
Check continuity between terminals 3 and 5, 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace rear window defogger and door mirror defogger relay.
4.
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY GROUND HARNESS
INSPECTION
1.
Turn ignition switch OFF.
2.
Installation rear window defogger and door mirror defogger relay.
3.
Turn ignition switch ON.
4.
Check voltage between BCM connector terminal 144 (G/W) and
ground.
OK or NG
OK
>> Rear window defogger and door mirror defogger circuit
is OK.
NG
>> Repair or replace harness between rear window defog-
ger and door mirror defogger relay and BCM.
1 (W/G) – Ground
: Battery voltage
PIIB0555E
Terminal
Condition
Continuity
(+)
(-)
3
5
12V direct current supply
between terminals 1 to 2
Should exist
No current supply
Should not exist
6
7
12V direct current supply
between terminals 1 to 2
Should exist
No current supply
Should not exist
SEC202B
144 (G/W) – Ground
: Battery voltage
PIIA0211E
GW-72
REAR WINDOW DEFOGGER
Rear Window Defogger Circuit Check
AIS001O7
1.
REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT INSPECTION 1
1.
Disconnect rear window defogger connector.
2.
Turn ignition switch ON.
3.
Push the rear window defogger switch.
4.
Check voltage between rear window defogger connector and
ground.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
REAR WINDOW DEFOGGER GROUND HARNESS INSPECTION
1.
Turn ignition switch OFF.
2.
Check continuity between rear window defogger connector
B421terminal 1 (B) and ground.
OK or NG
OK
>> Rear window defogger circuit check is OK.
NG
>> Repair or replace harness between rear window defog-
ger and ground.
3.
REAR WINDOW DEFOGGER GROUND HARNESS INSPECTION 2
1.
Disconnect condenser connector.
2.
Turn ignition switch ON.
3.
Push the rear window defogger switch.
4.
Check voltage between condenser connector and ground.
OK or NG
OK
>> Check the condenser
●
If condenser is OK, repair or replace harness
between condenser and rear window defogger.
●
If condenser is NG, replace condenser.
NG
>> Repair or replace harness between rear window defogger and door mirror defogger relay and
condenser.
Con-
nector
Terminal
(Wire color)
Condition
Voltage V
(Approx)
(+)
(–)
B181
2 (B)
Ground
Turn ignition switch ON.
When rear window defogger
switch is pressed.
Battery voltage
Turn ignition switch OFF.
0
PIIA2894E
1(B)
−
ground
: Continuity should exist.
PIIA2887E
Con-
nector
Terminal
(Wire color)
Condition
Voltage V
(Approx)
(+)
(–)
B25
1 (L/R)
Ground
When rear window defogger
switch is pressed.
Battery voltage
Turn ignition switch OFF.
0
PIIA2895E
REAR WINDOW DEFOGGER
GW-73
C
D
E
F
G
H
J
K
L
M
A
B
GW
Door Mirror Defogger Power Supply Circuit Check
AIS001OA
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check if the following fuse for Fuse block (J/B) is blown.
GW-60, "Component Parts and Harness Connector Location"
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to
2.
DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT INSPECTION 1
1.
Disconnect door mirror defogger relay connector.
2.
Turn ignition switch ON.
3.
push the rear window defogger switch.
4.
Check voltage between door mirror defogger relay connector
and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace between harness rear window defogger and door mirror defogger relay and
door mirror defogger relay.
3.
DOOR MIRROR DEFOGGER RELAY INSPECTION
1.
Turn ignition switch OFF.
2.
Remove door mirror defogger relay.
3.
Check continuity between terminals 3 and 5.
OK or NG
OK
>> GO TO 4.
NG
>> Replace door mirror defogger relay.
COMPONENT PARTS
TERMINAL NO. (SIGNAL)
AMPERE
FUSE NO.
Fuse block (J/B)
3A (BAT power supply)
10A
#4
Con-
nector
Terminal
(Wire color)
Condition
Voltage V
(Approx)
(+)
(–)
B10
2 (L/R)
Ground
Turn ignition switch ON.
When rear window defogger
switch is pressed.
Battery voltage
Turn ignition switch OFF.
0
PIIA2896E
Terminal
Condition
Continuity
3
5
12V direct current supply
between terminals 1 to 2
Should exist
No current supply
Should not exist
PIIA2636E
GW-74
REAR WINDOW DEFOGGER
4.
DOOR MIRROR DEFOGGER RELAY GROUND HARNESS INSPECTION
Check continuity between door mirror defogger relay connector B10
terminal 1 (B) and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness between door mirror defogger
relay and ground.
5.
DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT INSPECTION
Check voltage between door mirror defogger relay connector B10
terminal 5 (P/B) and ground.
OK or NG
OK
>> Check the harness for open or short between door mir-
ror defogger relay and door mirror.
NG
>> Repair or replace harness between fuse block (J/B)
No.1 and door mirror defogger relay.
Driver Side Door Mirror Defogger Circuit Check
AIS001OB
1.
DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT INSPECTION
1.
Turn ignition switch OFF.
2.
Disconnect door mirror defogger connector.
3.
Check voltage between driver side door mirror defogger connec-
tor and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between door mirror defogger relay and driver side door mirror (Door
mirror defogger).
1 (B)
−
ground
: Continuity should exist.
PIIA2897E
5 (P/B) – Ground
: Battery voltage
PIIA2898E
Con-
nector
Terminal
(Wire color)
Condition
Voltage V
(Approx)
(+)
(–)
D2
6(L/R)
Ground
Turn ignition switch ON.
When rear window defogger
switch is pressed.
Battery voltage
Turn ignition switch OFF.
0
PIIA2888E
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