Page 65 of 82
REAR WINDOW DEFOGGER
GW-65
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2006 November2007 350Z
TIWT2278E
Page 66 of 82
GW-66
REAR WINDOW DEFOGGER
Revision: 2006 November2007 350Z
TIWT1600E
Page 67 of 82
REAR WINDOW DEFOGGER
GW-67
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2006 November2007 350Z
Terminal and Reference Value for BCMNIS0005K
Terminal and Reference Value for IPDM E/R.NIS0005L
Terminal and Reference Value for Unified Meter and A/C Amp.NIS0005M
Te r -
minalWire
ColorItemSignal
input/out-
putConditionVoltage (V)
(Approx.)
9L/RRear window defogger
switch signalOutput Rear window defogger switch: Pressed 0
: OFF 5
11 L GIgnition switch ACC power supply
(ACC or ON)InputIgnition switch
(ACC or ON position)Battery voltage
38 W/LIgnition switch ON power supply
(ON or START)InputIgnition switch
(ON or START position)Battery voltage
39 L CAN-HInput/Out-
put——
40 P CAN-LInput/Out-
put——
42 GY Power source (Fuse) Input — Battery voltage
52 B Ground — — 0
55 R Power source (Fusible link) Input — Battery voltage
Te r -
minalWire
ColorItemSignal
input/out-
putConditionVoltage (V)
(Approx.)
5 P Battery power supply Output — Battery voltage
6 W Battery power supply Output — Battery voltage
38 B Ground (Power) — — 0
48 L CAN-HInput/Out-
put——
49 P CAN-LInput/Out-
put——
52 WRear window defogger relay
control signalInput Rear window defogger switch: ON 0
: OFF Battery voltage
60 B Ground (Signal) — — 0
Te r -
minalWire
ColorItemSignal
input/out-
putConditionVoltage (V)
(Approx.)
21 R/W Power source (Fuse) Input — Battery voltage
22 Y/GIgnition switch ON power supply
(ON or START)InputIgnition switch
(ON or START position)Battery voltage
29 B Ground (Power) — — 0
30 B Ground — — 0
38 L/RRear window defogger
switch signalInput Rear window defogger switch.: Pressed 0
: OFF 5
56 B/WRear window defogger
ON signalInput Rear window defogger switch: ON Battery voltage
: OFF 0
72 — Indicator power supply InputIgnition switch
(ON or START position)5
78 —Rear window defogger
indicator signalInput Rear window defogger switch: ON 0
: OFF 5
Page 68 of 82
GW-68
REAR WINDOW DEFOGGER
Revision: 2006 November2007 350Z
CONSULT-III Function (BCM)NIS0005N
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
CONSULT-III Function (IPDM E/R)NIS0005O
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
DATA MONITOR
ACTIVE TEST
84 —A/C control push switch
power supplyInputIgnition switch
(ON or START position)5
87 —Rear window defogger
switch ON signalInput Rear window defogger switch: ON 0
: OFF 5 Te r -
minalWire
ColorItemSignal
input/out-
putConditionVoltag e (V)
(Approx.)
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-III screen is touched.
Page 69 of 82
REAR WINDOW DEFOGGER
GW-69
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2006 November2007 350Z
Work FlowNIS0005P
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-56, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-69,
"Trouble Diagnoses Symptom Chart" .
4. Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 4.
5. INSPECTION END
Trouble Diagnoses Symptom ChartNIS0005Q
Make sure that other systems using the signal of the following systems operate normally.
*1 : For Coupe
*2 : For RoadsterSymptom Diagnoses / service procedure Refer to page
Rear window defogger does not operate.1. CAN communication inspection using CONSLUT-III
(self-diagnosis)BCS-16
2. Check IPDM E/R operationGW-70
3. Check rear window defogger switch circuitGW-70
4. Check rear window defogger power supply circuitGW-71
5. Replace IPDM E/R.PG-26
Rear window defogger does not response but door mir-
ror defoggers operate.1. Check rear window defogger circuitGW-73*1
GW-74*2
2. Check filamentGW-78
Both of door mirror defoggers do not response but rear
window defogger operates.Check door mirror defogger power supply circuitGW-75
Driver side door mirror defogger does not operate. Check driver side door mirror defogger circuitGW-76
Passenger side door mirror defogger does not operate. Check passenger side door mirror defogger circuitGW-76
Page 70 of 82
GW-70
REAR WINDOW DEFOGGER
Revision: 2006 November2007 350Z
Check IPDM E/R OperationNIS0005R
1. CHECK IPDM E/R OPERATION
With CONSULT-III
Check IPDM E/R “REAR DEFOGGER” in “ACTIVE TEST” mode with CONSULT-III.
Refer to GW-68, "
ACTIVE TEST" .
YES or NO
YES >> GO TO diagnosis/service procedure 3 in “Trouble Diagnosis Symptom Chart”. Refer to GW-69 .
NO >> GO TO diagnosis/service procedure 4 in “Trouble Diagnosis Symptom Chart”. Refer to GW-69
.
Check Rear Window Defogger Switch CircuitNIS0005S
1. CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-III
Check (“REAR DEF SW” and “IGN ON SW”) in DATA MONITOR mode with CONSULT-III. Refer to GW-68,
"DATA MONITOR" .
With out CONSULT-III
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. REAR WINDOW DEFOGGER SWITCH SIGNAL CIRCUIT HARNESS CONTINUITY INSPECTION
1. Turn ignition switch OFF.
2. Disconnect BCM connector and unified meter and A/C amp.connector.
3. Check continuity between BCM connector M90 terminal 9 and unified meter and A/C amp. connector M50
terminal 38.
4. Check continuity between BCM harness connector M90 terminal
9 and ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.When “ACTIVE TEST” is performed, does rear defogger switch indicator illuminate?
When rear defogger switch is turned to ON
REAR DEF SW :ON
When ignition switch is turned to ON
IGN ON SW :ON
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M90 9 (L/R) GroundRear window
defogger switch: ON 0
: OFF 5
PIIA6208E
9 (L/R) – 38 (L/R) : Continuity should exist
9 (L/R) – Ground : Continuity should not exist
PIIB0806E
Page 71 of 82
REAR WINDOW DEFOGGER
GW-71
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: 2006 November2007 350Z
3. CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M90 terminal 9 and
ground.
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> Replace BCM.
Check Rear Window Defogger Power Supply CircuitNIS0005T
1. CHECK FUSE
Check 10A fuse [No. 12, located in fuse block (J/B)].
NOTE:
Refer to GW-56, "
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 PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Check voltage between rear window defogger relay connector
B34 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.9 (L/R) – Ground :Approx. 5V
PIIA6208E
1 (G/R) – Ground : Battery voltage
PIIA2377E
Page 72 of 82
GW-72
REAR WINDOW DEFOGGER
Revision: 2006 November2007 350Z
3. REAR WINDOW DEFOGGER RELAY INSPECTION
1. Remove rear window defogger relay.
2. Check continuity between rear window defogger relay terminals
3 and 5, 6 and 7.
OK or NG
OK >> GO TO 4.
NG >> Replace rear window defogger relay.
4. REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT INSPECTION
1. Installation rear window defogger relay.
2. Turn ignition switch ON.
3. Turn rear window defogger switch OFF.
4. Check voltage between IPDM E/R connector E9 terminal 52 and
ground.
OK or NG
OK >> Rear window defogger power supply circuit 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 B34 terminal 2.
OK or NG
OK >> Check the condition of harness and the connector.
NG >> Repair or replace harness.
Terminal Condition Continuity
3512V direct current supply
between terminals 1 and 2Ye s
No current supply No
6712V direct current supply
between terminals 1 and 2Ye s
No current supply No
SEC202B
52 (B) – Ground : Battery voltage
PIIA6210E
52 (W) - 2 (W) :Continuity should exist.
PIIA6211E
