Nissan Murano Z50 (2005 year). Manual — part 146
GW-78
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
CAN Communication System Description
AIS003KN
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 Unit
AIS004UP
Refer to
REAR WINDOW DEFOGGER
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Schematic – DEF –
AIS002IE
TIWB0176E
GW-80
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
Wiring Diagram –DEF–
AIS002IF
TIWB0177E
REAR WINDOW DEFOGGER
GW-81
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TIWB0178E
GW-82
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
TIWA0511E
REAR WINDOW DEFOGGER
GW-83
C
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F
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TIWB0179E
GW-84
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
Terminal and Reference Value for BCM
AIS002IG
Terminal and Reference Value for IPDM E/R
AIS002IH
Terminal
Wire color
Item
Condition
Voltage (V)
(Approx.)
9
G/W
Rear window defogger
switch signal
When rear window defogger switch is pressed.
0
When rear window defogger switch is OFF.
5
38
R
Ignition switch ON or START
Ignition switch (ON or START position)
Battery voltage
39
L
CAN H
—
—
40
Y
CAN L
—
—
42
GR
Battery power supply
—
Battery voltage
52
B
Ground (Power)
—
0
55
W/B
Power source (Fusible link)
—
Battery voltage
Terminal
Wire color
Item
Condition
Voltage (V)
(Approx.)
5
W
Battery power supply
—
Battery voltage
6
L
Battery power supply
—
Battery voltage
38
B
Ground (Power)
—
0
48
L
CAN H
—
—
49
Y
CAN L
—
—
52
G/R
Rear window defogger relay
control signal
When rear window defogger switch is ON.
0
When rear window defogger switch is OFF.
Battery voltage
60
B
Ground (Signal)
—
0
REAR WINDOW DEFOGGER
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CONSULT-II Function (BCM)
AIS003KV
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
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 “BCM”.
If “BCM” is not indicated, go to
, “CONSULT-II Date Link
Connector (DLC) Circuit”
6.
Touch “REAR DEFOGGER”.
BCM diagnostic test item
Check item diagnostic test mode
Content
REAR DEFOGGER
Data monitor
Displays the input data of BCM in real time.
Active test
Gives a drive signal to a load to check the operation.
PIIA1095E
BCIA0029E
BCIA0030E
LIIA0153E
GW-86
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
7.
Select diagnosis mode,“DATA MONITOR” and “ACTIVE TEST”
are available.
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
BCIA0031E
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 relay to activate it.
REAR WINDOW DEFOGGER
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Work Flow
AIS002II
1.
Check the symptom and customer's requests.
2.
Understand the outline of system. Refer to
3.
According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to
"Trouble Diagnoses Symptom Chart"
4.
Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5.
INSPECTION END.
Trouble Diagnoses Symptom Chart
AIS002IK
Make sure other systems using the signal of the following systems operate normally.
Symptom
Diagnoses / Service procedure
Refer to page
Rear window defogger and door mirror defogger do not
operate. (With door mirror defogger)
1. BCM power supply and ground circuit check
2. IPDM E/R auto active test check
3. Rear window defogger switch circuit check
4. Rear window defogger power supply circuit check
5. Replace IPDM E/ R
Rear window defogger does not operate.
(Without door mirror defogger)
1. BCM power supply and ground circuit check
2. IPDM E/R auto active test check
3. Rear window defogger switch circuit check
4. Rear window defogger power supply circuit check
5. Rear window defogger circuit check
6. Filament check
7. Replace IPDM E/ R
Rear window defogger does not operate but both of door
mirror defogger operate.(With door mirror defogger)
1. Rear window defogger circuit check
2. Filament check
Both of door mirror defogger does not operated but rear
window defogger operate. (With door mirror defogger)
Door mirror defogger power supply circuit check
Driver side door mirror defogger does not operate.
Driver side door mirror defogger circuit check
Passenger side door mirror defogger does not operate.
Passenger side door mirror defogger circuit check
Rear window defogger switch does not light, and rear win-
dow defogger is not displayed on the display.
But rear window defogger operates.
Rear window defogger signal check
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BCM Power Supply and Ground Circuit Check
AIS0034Z
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the each trouble
diagnosis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to
Communication Inspection Using CONSULT-II (Self-Diagnosis)"
1.
CHECK FUSE
●
Check 10A fuse [No.1, located in fuse block (J/B)]
●
Check 10A fuse [No.18, located in fuse block (J/B)]
●
Check 50A fusible link (letter F located in the fuse and fusible link box)
NOTE:
Refer to
GW-75, "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
3, "POWER SUPPLY ROUTING CIRCUIT"
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between BCM connector M34, M35 terminals 38, 42, 55 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check BCM power supply circuit for open or short.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check continuity between BCM connector M35 terminals 52 and ground.
OK or NG
OK
>> BCM power supply and ground circuit are OK.
NG
>> Check BCM ground circuit for open or short.
38 (R) – Ground
: Battery voltage
42 (GR) – Ground
: Battery voltage
55 (W/B) – Ground
: Battery voltage
PIIA6160E
52 (B) – Ground
: Continuity should exist.
PIIA9131E
REAR WINDOW DEFOGGER
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Rear Window Defogger Switch Circuit Check
AIS002IL
1.
CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II.
With out CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between BCM connector ground.
OK or NG
OK
>> Rear window defogger switch check is OK.
NG
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect BCM and A/C and AV switch connector.
3.
Check continuity between BCM connector M34 terminal 9 and A/C and AV switch connector M48 terminal
16.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
When rear window defogger switch is turned to ON
REAR DEF SW
: ON
When ignition switch is turned to ON
IGN ON SW
: ON
PIIA2373E
Connector
Terminal (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
M34
9 (G/W)
Ground
Rear window defogger
switch is pressed.
0
Rear window defogger
switch is OFF.
5
PIIA6208E
9 (G/W) – 16(G/W)
: Continuity should exist.
PIIA9681E
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3.
CHECK BCM OUTPUT SIGNAL
1.
Connect BCM connector.
2.
Turn ignition switch ON.
3.
Check voltage between BCM connector M34 terminal 9 and
ground.
OK or NG
OK
>> Replace A/C and AV switch.
NG
>> Replace BCM.
Rear Window Defogger Power Supply Circuit Check
AIS002IM
1.
CHECK FUSE
●
Check 10A fuse [No.12, located in the fuse block (J/B)]
●
Check 20A fuse (No.75, located in the IPDM E/R)
●
Check 20A fuse (No.80, located in the IPDM E/R)
NOTE:
Refer to
GW-75, "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
3, "POWER SUPPLY ROUTING CIRCUIT"
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger relay.
3.
Turn ignition switch ON.
4.
Check voltage between rear window defogger relay connector
B8 terminals 1, 3, 6 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
9 (G/W) – Ground
: Approx. 5
PIIA6208E
1 (G) – Ground
: Battery voltage
3 (L) – Ground
: Battery voltage
6 (W) – Ground
: Battery voltage
PIIA4233E
REAR WINDOW DEFOGGER
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3.
CHECK REAR WINDOW DEFOGGER RELAY
Check continuity between rear window defogger terminals 3 and 5, 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace rear window defogger relay.
4.
CHECK GROUND CIRCUIT
1.
Installation rear window defogger relay.
2.
Turn ignition switch ON.
3.
Check voltage between IPDM E/R connector and ground.
OK or NG
OK
>> Rear window defogger power supply circuit check is OK.
NG
>> GO TO 5.
5.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector and rear window defogger relay.
3.
Check continuity between IPDM E/R connector E9 terminal 52 and rear window defogger relay connector
B8 terminal 2.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness.
Terminal
Condition
Continuity
3
5
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
6
7
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
SEC202B
Connector
Terminals (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(-)
E9
52 (G/R)
Ground
When rear window defog-
ger switch ON
0
When rear window defog-
ger switch OFF
Battery
voltage
PIIA6210E
52 (G/R) – 2 (G/R)
: Continuity should exist.
PIIA6211E
GW-92
REAR WINDOW DEFOGGER
Revision: 2005 August
2005 Murano
Rear Window Defogger Circuit Check
AIS002IN
1.
CHECK 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 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between rear window defogger connector D107 terminal 2 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 HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger relay.
3.
Check continuity between rear window defogger relay connector B8 terminal 5 and rear window defogger
connector D97 terminal 1.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness rear window defogger relay
and rear window defogger. When there is malfunction
inside back door, replace the back door.
Connector
Terminal (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
D97
1 (G)
Ground
Rear window defogger
switch ON.
Battery voltage
Rear window defogger
switch OFF.
0
PIIA4234E
2 (B)
−
Ground
: Continuity should exist.
PIIA4235E
5 (G) – 1 (G)
: Continuity should exist.
PIIA4236E
REAR WINDOW DEFOGGER
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Revision: 2005 August
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Door Mirror Defogger Power Supply Circuit Check
AIS002IO
1.
CHECK FUSE
Check 10A fuse [No. 8, located in the fuse block (J/B)]
NOTE:
Refer to
GW-75, "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
3, "POWER SUPPLY ROUTING CIRCUIT"
.
2.
CHECK POWER SUPPLY CIRCUIT 1
1.
Turn ignition switch ON.
2.
Check voltage between fuse block (J/B) connector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
3.
CHECK POWER SUPPLY CIRCUIT 2
Check voltage between fuse block (J/B) connector and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Replace fuse block (J/B).
Connector
Terminal (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
E101
2C (G)
Ground
Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF
0
PIIA2388E
Connector
Terminal (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
M2
5B (L/B)
Ground
Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF
0
PIIA2386E
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