INFINITI M35 2007 Factory Service Manual

GW-72
REAR WINDOW DEFOGGER
Revision: 2007 April2007 M35/M45

through 50A fusible link (letter F , located in the fuse and fusible link box)

to BCM terminal 55,

through 10A fuse [No. 21, located in the fuse block (J/B)]

to BCM terminal 42.
With the ignition switch turned to ON or START position,
Power is supplied

through 15A fuse [No. 1, located in the fuse block (J/B)]

to BCM terminal 38.

through 10A fuse [No. 12, located in the fuse block (J/B)]

to rear window defogger relay terminal 1.
With the ignition switch turned to ACC or ON position,

through 10A fuse [No. 6, located in the fuse block (J/B)]

to multi-function switch terminal 2.
Ground is supplied

to BCM terminal 52

through body grounds M16 and M70,

to multi-function switch terminal 14

through body grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through body grounds E22 and E43.
When rear window defogger switch in multi-function switch is turned to ON.
Then multi-function switch recognizes that rear window defogger switch is turned to ON.
Then it sends rear window defogger switch signals to AV control unit (without navigation system) or NAVI con-
trol unit (with navigation system) via AV line.
When AV control unit (without navigation system) or NAVI control unit (with navigation system) receives rear
window defogger switch signals, and display on the screen.
Then AV control unit (without navigation system) or NAVI control unit (with navigation system) recognizes that
rear window defogger switch is turned to ON.
Then it sends rear window defogger switch signal to BCM via DATA LINE (CAN H, CAN L).
Then BCM recognizes that rear window defogger switch signal.
Then it sends rear window defogger request signal to IPDM E/R via DATA LINE (CAN H, CAN L).
When IPDM E/R receives rear window defogger switch signals,
Ground is supplied

to rear window defogger relay terminal 2

through IPDM E/R terminal 57

through IPDM E/R terminal 51

through body grounds E22 and E43.
And then rear window defogger relay is energized.
When rear window defogger relay is turned ON, signals are transmitted.

through rear window defogger relay terminals 5 and 7

through condenser terminal 1

to rear window defogger terminal 1
Rear window defogger terminal 2 is grounded through grounds B702.
With power and ground supplied, rear window defogger filaments heat and defog the rear window.
When rear window defogger relay is turned to ON,
Power is supplied

through rear window defogger relay terminals 5 and 7

through fuse block (J/B) terminal 2C

through 10A fuse [No. 8, located in the fuse block (J/B)] and

through fuse block (J/B) terminal 5B

to door mirror (LH and RH) terminal 4.
Door mirror (LH and RH) terminal 8 is grounded through body grounds M16 and M70.

REAR WINDOW DEFOGGER
GW-73
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2007 April2007 M35/M45
With power and ground supplied, door mirror defogger filaments heat and defog the mirror.
CAN Communication System DescriptionNIS0022I
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNIS0022J
Refer to LAN-50, "CAN System Specification Chart" .

GW-74
REAR WINDOW DEFOGGER
Revision: 2007 April2007 M35/M45
SchematicNIS0022K
TIWT1352E

REAR WINDOW DEFOGGER
GW-75
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2007 April2007 M35/M45
Wiring Diagram — DEF — NIS0022L
TIWT2117E

GW-76
REAR WINDOW DEFOGGER
Revision: 2007 April2007 M35/M45
TIWT2039E

REAR WINDOW DEFOGGER
GW-77
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2007 April2007 M35/M45
TIWT2040E

GW-78
REAR WINDOW DEFOGGER
Revision: 2007 April2007 M35/M45
TIWT2041E

REAR WINDOW DEFOGGER
GW-79
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2007 April2007 M35/M45
TIWT2042E

GW-80
REAR WINDOW DEFOGGER
Revision: 2007 April2007 M35/M45
Terminal and Reference Value for BCMNIS0022M
Terminal and Reference Value for IPDM E/RNIS0022N
Te r m i -
nalWire
colorItemSignal
Input/
OutputConditionVoltage (V)
(Approx.)
38 W Ignition switch ON or START Input Ignition switch (ON or START position) Battery voltage
39 L CAN− HInput/
Output——
40 P CAN− LInput/
Output——
42 P Power source (Fuse) Input — Battery voltage
52 B Ground — — 0
55 W Power source (Fusible link) Input — Battery voltage
Te r m i -
nalWire
colorItemSignal
Input/
OutputConditionVoltage (V)
(Approx.)
5 W Battery power supply Output — Battery voltage
6 R Battery power supply Output — Battery voltage
38 B Ground (Power) — — 0
49 L CAN− HInput/
Output——
50 P CAN− LInput/
Output——
51 B Ground (Signal) — — 0
57 GRear window defogger relay
control signalInputWhen rear window defogger switch is ON. 0
When rear window defogger switch is OFF. Battery voltage

REAR WINDOW DEFOGGER
GW-81
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2007 April2007 M35/M45
CONSULT-II Function (BCM)NIS0028Q
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure"
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
CONSULT-II Function (IPDM E/R)NIS0028R
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure"
DATA MONITOR
ACTIVE TEST
BCM diagnostic test itemCheck item diagnostic
test modeContent
REAR DEFOGGERData monitor Displays the input data of BCM in real time.
Active test Gives a drive signal to a load to check the operation.
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.
Test item Content
REAR DEFOGGER Gives a drive signal to the rear window defogger to activate it.
IPDM E/R diagnostic test
itemCheck item diagnostic
test modeContent
REAR DEFOGGERData monitor Displays the input data of BCM in real time.
Active test Gives a drive signal to a load to check the operation.
Monitored Item Description
RR DEF REQ Indicates [ON/OFF] condition of rear window defogger function by IPDM E/R.
Test Item Description
REAR DEFOGGERThis test is able to check rear window defogger operation. Rear window defogger operates when
“ON” on CONSULT-II screen is touched.