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REAR WINDOW DEFOGGER
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MIWA0439E
Page 1738 of 3171
GW-52
REAR WINDOW DEFOGGER
MIWA0440E
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REAR WINDOW DEFOGGER
GW-53
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Terminal and Reference Value for BCMEIS00B8J
Terminal and Reference Value for IPDM E/REIS00B8K
Work FlowEIS00B8L
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer toGW-47, "
System Description".
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer toGW-56,
"Trouble Diagnoses Symptom Chart".
4. Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5. Inspection end.
TerminalWire
colorItem ConditionVoltage (V)
(Approx.)
3 Y Ignition switch ON or START Ignition switch (ON or START position) Battery voltage
20 YRear window defogger
switch signalWhen rear window defogger switch is pressed 0
When rear window defogger switch is OFF 5
21 P CAN-L — —
22 L CAN-H — —
55 P Ground — 0
57 W Battery power supply — Battery voltage
Te r m i n a lWire
colorItem ConditionVoltag e (V)
(Approx.)
38 B Ground — 0
39 L CAN-H — —
40 P CAN-L — —
59 B Ground — 0
60 GR Rear window defogger output signalWhen rear window defogger switch is ON Battery voltage
When rear window defogger switch is OFF 0
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GW-54
REAR WINDOW DEFOGGER
CONSULT-II Function (BCM)
EIS00B8M
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”.
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORT Changes setting of each function.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT
MNTRThe results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0538E
BCIA0029E
BCIA0030E
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REAR WINDOW DEFOGGER
GW-55
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6. Touch “REAR DEFOGGER”.
7. Select diagnosis mode,“DATA MONITOR” or “ACTIVE TEST”.
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
LIIA0153E
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 WINDOW DEFOGGER Gives a drive signal to the rear window defogger to activate it.
Page 1742 of 3171

GW-56
REAR WINDOW DEFOGGER
Trouble Diagnoses Symptom Chart
EIS00B8N
lMake sure other systems using the signal of the following systems operate normally.
BCM Power Supply and Ground Circuit CheckEIS00B8O
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, when perform the each trouble
diagnosis. Refer toBCS-16, "
CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)".
1.CHECK FUSE
lCheck 10A fuse [No. 1, located in the fuse block (J/B)]
lCheck 50A fusible link (letterGlocated in the fuse and fusible link box)
NOTE:
Refer toGW-47, "
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 toPG-
4, "POWER SUPPLY ROUTING CIRCUIT".
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Turn ignition switch ON.
4. Check voltage between BCM connector M42, M44 terminal 3,
57 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Symptom Diagnoses / Service procedure Refer to page
Rear window defogger and door mirror defoggers do not
operate.1. BCM power supply and ground circuit checkGW-56
2. IPDM E/R auto active test checkPG-19
3. Rear window defogger power supply circuit checkGW-59
4. Rear window defogger switch circuit checkGW-57
5. Rear window defogger circuit checkGW-59
6. Replace IPDM E/RPG-26
Rear window defogger switch does not light, and rear win-
dow defogger is not displayed on the display, but rear win-
dow defogger operates.1. Rear window defogger signal checkGW-60
3 - Ground : Battery voltage
57 - Ground : Battery voltage
MIIB0730E
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REAR WINDOW DEFOGGER
GW-57
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3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector M44 terminal 55 and
ground.
OK or NG
OK >> BCM power supply and ground circuit is OK.
NG >> Repair or replace harness.
Rear Window Defogger Switch Circuit CheckEIS00B8P
1.CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II.
Without CONSULT-II
1. GO TO 2.
OK or NG
OK >> Rear window defogger switch is OK.
NG >> GO TO 2.55 - Ground : Continuity should exist.
MIIB0594E
When rear window defogger switch is turned to ON
REAR DEF SW : ON
When ignition switch is turned to ON
IGNONSW :ON
PIIA2373E
Page 1744 of 3171
GW-58
REAR WINDOW DEFOGGER
2.CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and front air control connector.
3. Check continuity between BCM connector M42 terminal 20 and
front air control connector M60 (With auto A/C) or M99 (With
manual A/C) terminal 11.
4. Check continuity between BCM connector M42 terminal 20 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM and front air control connector.
2. Turn ignition switch ON.
3. Check voltage between front air control connector M60 (With
auto A/C) or M99 (With manual A/C) terminal 11 and ground.
OK or NG
OK >> Check front air control. Refer to
NG >> Replace BCM.20 - 11 : Continuity should exist.
20 - Ground : Continuity should not exist.
MIIB0732E
11 - Ground : Approx. 5V
MIIB0731E