Infiniti M45 (Y34). Manual — part 589
REAR WINDOW DEFOGGER
GW-67
C
D
E
F
G
H
J
K
L
M
A
B
GW
2.
POWER SUPPLY CIRCUIT INSPECTION (BCM)
1.
Turn ignition switch OFF.
2.
Disconnect the BCM connector M4, check voltage between connector terminal (refer to the “Chart below”)
of the harness connector and ground.
OK or NG?
OK
>> GO TO 3.
NG
>> Check harness for open and short between BCM and fuse.
3.
GROUND CIRCUIT INSPECTION (BCM)
Check continuity between BCM connector M4 terminals and ground.
OK or NG?
OK
>> System is OK.
NG
>> Repair or replace harness.
Terminals
Power source
Condition
Voltage (V)
(Approx.)
(+)
(–)
Connector
Terminal
(Wire color)
M4
105(Y/L)
Ground
BAT
power supply
Ignition
switch OFF
Battery
voltage
68(W/B)
Ground
IGN
power supply
Ignition
switch ON
Battery
voltage
PIIA0206E
56 (B) – Ground
: Continuity should exist.
113 (B) – Ground
: Continuity should exist.
PIIA0170E
GW-68
REAR WINDOW DEFOGGER
CONSULT-II Function
AIS001Q5
CONSULT-II BASIC OPERATION PROCEDURE
1.
Turn ignition switch OFF.
2.
Connect “CONSULT-II” and CONSULT-II CONVERTER to data
link connector.
3.
Turn ignition switch ON.
4.
Touch “START (NISSAN BASED VHCL)”.
5.
Touch “IVMS”on the “SELECT SYSTEM” screen.
6.
Check the model specification, and touch either “WITH SUN-
ROOF” or “WITHOUT SUNROOF” on the “SELECT SYS
COND” screen.
7.
Touch “OK”. If the selection is wrong, touch “CANCEL”.
8.
Select the desired part to be diagnosed on the “SELECT TEST
ITEM” screen.
DATA MONITOR
Display Item List
PBIB1069E
MBIB0233E
PIIA0183E
PIIA0184E
Monitor item “Operation”
Content
REAR DEF SW
“ON/OFF”
Displays “Press (ON)/others (OFF)” status determined with the rear window defogger
switch.
IGN ON SW
“ON/OFF”
Displays “IGN (ON)/OFF” status determined with the ignition switch signal.
REAR WINDOW DEFOGGER
GW-69
C
D
E
F
G
H
J
K
L
M
A
B
GW
ACTIVE TEST
Display Item List
Trouble Diagnosis Symptom Chart
AIS001O3
●
Check that other systems using the signal of the following systems operate normally.
Rear Window Defogger Switch Circuit Check
AIS001O5
1.
REAR WINDOW DEFOGGER (MULTIFUNCTION) SWITCH INSPECTION
With CONSULT-II
Check rear window switch “REAR DEF SW ” in “DATA MONITOR”
mode with CONSULT-II.
With out CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between BCM connector M4 terminal 10(G/R)
and ground.
OK or NG
OK
>> Rear window defogger switch check is OK.
NG
>> GO TO 2.
Test item
Content
REAR DEFOGGER
Gives a drive signal to the rear window defogger to activate it.
Symptom
Diagnoses / service procedure
Refer to page
Rear window defogger and door mirror defogger do not
operate.
1, Rear window defogger switch circuit check.
2, Rear window defogger and door mirror defogger circuit
check.
3, Replace BCM
–
Rear window defogger does not operate, but door mirror
defogger operates.
1, Rear window defogger circuit check.
2, Filament check.
Door mirror defogger does not operated, but rear win-
dow defogger operates.
1, Door mirror defogger power supply circuit check.
Driver side door mirror defogger does not operated, but
door mirror defogger operates
1, Driver side door mirror defogger circuit check.
Passenger side door mirror defogger does not operated,
buy door mirror defogger operates.
1, Passenger side door mirror defogger circuit check.
When rear window defogger switch ON
REAR DEF SW
: ON
PIIB0510E
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
M4
10 (G/R)
Ground
When rear window defogger
switch is pressed.
0
When rear window defogger
switch is OFF.
5
PIIB0554E
GW-70
REAR WINDOW DEFOGGER
2.
REAR WINDOW DEFOGGER SWITCH SIGNAL CIRCUIT INSPECTION
1.
Disconnect BCM connector and multifunction switch (rear window defogger with) connector.
2.
Check continuity between BCM connector M4 terminal 10(G/R)
and multifunction switch (rear defogger switch) connector M83
terminal 5(G/R).
3.
Check continuity between BCM harness connector M4 terminal
10(G/R) and ground
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between BCM and multifunc-
tion switch (rear window defogger switch).
3.
MULTIFUNCTION (REAR WINDOW DEFOGGER) SWITCH GROUND HARNESS INSPECTION
Check continuity between multifunction (rear window defogger)
switch connector M83 terminal 2 (B) and ground.
OK or NG
OK
>> Replace multifunction switch.
NG
>> Repair or replace harness between multifunction (rear
window defogger) switch and ground.
Rear Window Defogger and Door Mirror Defogger Circuit Check
AIS001O6
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check if the following fuse for Fuse block (J/B) is blown.
NOTE:
Refer to
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
10 (G/R) – 5(G/R)
:Continuity should exist.
10 (G/R) – ground
:Continuity should not exist.
PIIA2885E
2(B)
−
ground
: Continuity should exist.
PIIA2886E
COMPONENT PARTS
TERMINAL NO. (SIGNAL)
AMPERE
FUSE NO.
Fuse block (J/B)
2J (IGN power supply)
10A
#1
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