Infiniti FX35 / FX45. Manual — part 746
GW-68
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
CONSULT-III Function (IPDM E/R)
INFOID:0000000001328007
DATA MONITOR
ACTIVE TEST
Work Flow
INFOID:0000000001328008
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 Diagnosis Symptom Chart"
.
4.
Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5.
INSPECTION END.
Trouble Diagnosis Symptom Chart
INFOID:0000000001328009
Make sure other systems using the signal of the following systems operate normally.
Test item
Content
REAR DEFOGGER
Gives a drive signal to the rear window defogger relay to activate it.
IPDM E/R 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.
Monitored Item
Description
RR DEF REQ
Indicates [ON/OFF] condition of rear window defogger function by IPDM E/R.
Test Item
Description
REAR DEFOGGER
This test is able to check rear window defogger operation. Rear window defogger operates when “ON”
on CONSULT-III screen is touched.
Symptom
Diagnoses / Service procedure
Refer to page
Rear window defogger and door mirror defogger do not op-
erate.
1.
Check BCM power supply and ground circuit
2. Check IPDM E/R auto active test
3. Check rear window defogger switch circuit
4. Check rear window defogger power supply circuit
5. Replace IPDM E/ R
Rear window defogger does not operate but both of door
mirror defogger operate.
1. Check rear window defogger circuit
2. Check filament
Door mirror defogger does not operated but both of rear
window defogger operate.
Check door mirror defogger power supply circuit
Driver side door mirror defogger does not operate.
Check driver side door mirror defogger circuit
Passenger side door mirror defogger does not operate.
Check passenger side door mirror defogger circuit
Rear window defogger switch does not light, and rear win-
dow defogger is not displayed on the display.
But rear window defogger operates.
Check rear window defogger signal
REAR WINDOW DEFOGGER
GW-69
< SERVICE INFORMATION >
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Check BCM Power Supply and Ground Circuit
INFOID:0000000001328010
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, when perform the each trouble
diagnosis. Refer to
BCS-13, "U1000 CAN Communication Circuit"
.
1.
CHECK FUSE
• Check 15A fuse [No.1, located in the fuse block (J/B)]
• Check 15A fuse [No.22, located in the fuse block (J/B)]
• Check 50A fusible link (letter M located in the fuse and fusible link box).
NOTE:
Refer to
GW-60, "Component Parts and Harness Connector Location"
.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between BCM connector M3, M4 terminal 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 M4 terminal 49, 52
and ground.
OK or NG
OK
>> Power supply and ground circuit are OK.
NG
>> Check BCM ground circuit for open or short.
Check Rear Window Defogger Switch Circuit
INFOID:0000000001328011
1.
CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-III
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode with CONSULT-III.
Without CONSULT-III
1.
Turn ignition switch ON.
38 (W/L) – Ground
: Battery voltage
42 (L/R) – Ground
: Battery voltage
55 (G) – Ground
: Battery voltage
PIIA6160E
49 (B) – Ground
: Continuity should exist.
52 (B) – Ground
: Continuity should exist.
PIIA6161E
When rear window defogger switch is turned to ON
REAR DEF SW
: ON
When ignition switch is turned to ON
IGN ON SW
: ON
GW-70
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
2.
Check voltage between BCM connector ground.
OK or NG
OK
>> Rear window defogger switch 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 M3 terminal 9 and A/
C and AV switch connector M64 terminal 16.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
3.
CHECK BCM OUTPUT SIGNAL
1.
Connect BCM connector.
2.
Turn ignition switch ON.
3.
Check voltage between BCM connector M3 terminal 9 and
ground.
OK or NG
OK
>> Replace A/C and AV switch.
NG
>> Replace BCM.
Check rear Window Defogger Power Supply Circuit
INFOID:0000000001328012
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-60, "Component Parts and Harness Connector Location"
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse, refer to
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
Connector
Terminal (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
M3
9 (L/W)
Ground
Rear window defogger
switch is pressed.
0
Rear window defogger
switch is OFF.
5
PIIA6208E
9 (L/W) – 16 (L/W)
: Continuity should exist.
PIIA6209E
9 (L/W) – Ground
: Approx. 5
PIIA6208E
REAR WINDOW DEFOGGER
GW-71
< SERVICE INFORMATION >
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2.
Remove rear window defogger relay.
3.
Turn ignition switch ON.
4.
Check voltage between rear window defogger relay connector
E13 terminals 1, 3, 6 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
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 REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Installation rear window defogger relay.
3.
Turn ignition switch ON.
4.
Check voltage between IPDM E/R connector 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.
1 (OR) – Ground
: Battery voltage
3 (W) – Ground
: Battery voltage
6 (R) – Ground
: Battery voltage
PIIA4233E
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)
Ground
When rear window defog-
ger switch ON
0
When rear window defog-
ger switch OFF
Battery
voltage
PIIA6210E
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