relay INFINITI FX35 2004 Service Manual

GW-86
REAR WINDOW DEFOGGER
Revision: 2004 November 2004 FX35/FX45
REAR WINDOW DEFOGGERPFP:25350
Component Parts and Harness Connector LocationAIS004QY
System DescriptionAIS004QZ
The rear window defogger system is controlled by BCM (Body Control Module) and IPDM E/R (Intelligent
Power Distribution Module Engine Room).
The rear window defogger operates only for approximately 15 minutes.
Power is at all times supplied

through 20A fuse [No. 75, and 80, located in the IPDM E/R]

to rear window defogger relay terminals 3 and 6.

through 10A fuse [No.12, located in the fuse block]

to rear window defogger relay terminal 1.

through 15A fuse [No. 32, located in the fuse block (J/B)]
PIIA6408E

REAR WINDOW DEFOGGER
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Revision: 2004 November 2004 FX35/FX45

to A/C and AV switch terminal 1.

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

to BCM terminal 55.

through 15A fuse [No.22, 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.
Ground is supplied

to BCM terminal 49 and 52

through body grounds M35, M45 and M85.

to A/C and AV switch terminal 5

through body grounds M35, M45 and M85.

to IPDM E/R terminals 38 and 60

through body grounds E21, E50 and E51.
When rear window defogger switch in A/C and AV switch is turned to ON,
Ground is supplied

to BCM terminal 9

through A/C and AV switch terminal 16

through A/C and AV switch terminal 5

through body grounds M35, M45 and M85.
Then rear window defogger switch is illuminated.
Then BCM recognizes that rear window defogger switch is turned to ON.
Then it sends rear window defogger switch signals to IPDM E/R, display control unit (with navigation system)
or display unit (without navigation system) via DATA LINE (CAN H, CAN L).
When display control unit (with navigation system) or display unit (without navigation system) receives rear
window defogger switch signals, and display on the screen.
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 52

through IPDM E/R terminals 38 and 60

through body grounds E21, E50 and E51,
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

to rear window defogger terminal 1

Rear window defogger terminal 2 is grounded through body grounds B15 and B45.
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 terminal 7

through fuse block (J/B) terminal 2C

through 15A fuse [No. 8, located in the fuse block (J/B)]

through fuse block (J/B) terminal 5B

to door mirror defogger (driver side and passenger side) terminal 1.
Door mirror defogger (driver side and passenger side) terminal 2 is grounded through body grounds M35, M45
and M85.
With power and ground supplied, rear window defogger filaments heat and defog the rear window and door
mirror defogger filaments heat and defog the mirror.

GW-94
REAR WINDOW DEFOGGER
Revision: 2004 November 2004 FX35/FX45
Terminal and Reference Value for BCMAIS004R4
Terminal and Reference Value for IPDM E/RAIS004R5
Work FlowAIS004R6
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-86, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-97,
"Trouble Diagnoses Symptom Chart" .
4. Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5. INSPECTION END.
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
9L/WRear window defogger
switch signalWhen rear window defogger switch is pressed. 0
When rear window defogger switch is OFF. 5
38 W/L Ignition switch ON or START Ignition switch (ON or START position) Battery voltage
39 L CAN− H——
40 R CAN− L——
42 L/R Battery power supply — Battery voltage
49 B Ground (signal) — 0
52 B Ground (power) — 0
55 G Battery power supply — Battery voltage
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
5 R Battery power supply — Battery voltage
6 W Battery power supply — Battery voltage
38 B Ground (Power) — 0
48 L CAN− H——
49 R CAN− L——
52 GRear window defogger relay
control signalWhen rear window defogger switch is ON. 0
When rear window defogger switch is OFF. Battery voltage
60 B Ground (Signal) — 0

GW-96
REAR WINDOW DEFOGGER
Revision: 2004 November 2004 FX35/FX45
7. Select diagnosis mode,“DATA MONITOR” and “ACTIVE TEST”
are available.
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
SEL322W
Monitor item Content
REAR DEF SW Displays “Press (ON)/others (OFF)” status determined with the rear window defogger switch.
IGN ON SW 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.

GW-100
REAR WINDOW DEFOGGER
Revision: 2004 November 2004 FX35/FX45
Rear Window Defogger Power Supply Circuit CheckAIS004RB
1. CHECK FUSE

Check 10A fuse [No.12, located in 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-86, "
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
PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger relay connector
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between fuse block (J/B) and
rear window defogger relay.
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.
ConnectorTerminals (Wire color)
Voltage (V)
(Approx.)
(+) (-)
E131 (OR)
Ground Battery voltage 3 (W)
6 (R)
PIIA4233E
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

REAR WINDOW DEFOGGER
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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.
3. Check continuity between IPDM E/R connector E9 terminal 52
and rear window defogger relay connector E13 terminal 2.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness between IPDM E/R and rear
window defogger relay.
6. CHECK REAR WINDOW DEFOGGER RELAY OUTPUT SIGNAL
1. Connect IPDM E/R and rear window defogger relay.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R connector E9 terminal 52 and
ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace IPDM E/R.
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
E9 52 (G) GroundWhen rear window defog-
ger switch ON0
When rear window defog-
ger switch OFFBattery
voltage
PIIA6210E
52 (G) – 2 (G) : Continuity should exist.
PIIA6211E
52 (G) – Ground : Battery voltage
PIIA6210E

GW-102
REAR WINDOW DEFOGGER
Revision: 2004 November 2004 FX35/FX45
Rear Window Defogger Circuit CheckAIS004RC
1. CHECK POWER SUPPLY CIRCUIT 1
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
D114 terminal 2 and ground.
OK or NG
OK >> Check filament. Refer to GW-107, "Filament Check"

If filament is OK, check condition of harness and con-
nector.

If filament is NG, repair filament.
NG >> Repair or replace harness between rear window defog-
ger and ground.
3. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Check continuity between rear window defogger relay connector
E13 terminal 5, 7 and rear window defogger connector D104 ter-
minal 1.
OK or NG
OK >> Check condition of harness and connector.
NG >> Repair or replace harness rear window defogger relay
and condenser.
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D104 1(W) GroundRear window defogger
switch ON. Battery voltage
Rear window defogger
switch OFF.0
PIIA9347E
2 (B) − Ground : Continuity should exist.
PIIA9348E
5 (B) – 1 (W) : Continuity should exist.
7 (B) – 1 (W) : Continuity should exist.
PIIA9349E

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Door Mirror Defogger Power Supply Circuit CheckAIS004RD
1. CHECK FUSE

Check 15A fuse [No.8, located in fuse block (J/B)]
NOTE:
Refer to GW-86, "
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
PG-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 between rear window defog-
ger relay and fuse block (J/B).
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).
4. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) and door mirror connector.
3. Check continuity between fuse block (J/B) connector M2 termi-
nal 5B and door mirror connector D2 (driver side) or D32 (pas-
senger side) terminal 1.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between fuse block (J/B) and
malfunction door mirror connector.
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
E201 2C (B) GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
PIIA2388E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M2 5B (L) GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
PIIA2386E
5B (L) – 1 (L) : Continuity should exist.
PIIA6213E

IDX-7
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IDX
ALPHABETICAL INDEX
Propeller shaft ..................................................... PR-6
Propeller shaft on vehicle service ........................ PR-6
Propeller shaft vibration ....................................... PR-6
PS/SEN - Wiring diagram ................ EC-397, EC-1053
R
R/VIEW - Wiring diagram ................................... DI-84
Radiator(VK45DE) ............................................. CO-39
Radiator(VQ35DE) ............................................ CO-14
Rear axle ........................................................... RAX-5
Rear bumper ........................................................ EI-18
Rear combination lamp removal and installation ..........
LT-147
Rear door ............................................ BL-148, GW-80
Rear seat ......................................................... SE-107
Rear suspension ............................................... RSU-5
Rear view monitor ............................................... DI-81
Rear washer .................................................... WW-35
Rear window defogger ...................................... GW-86
Rear wiper ....................................................... WW-35
Refrigerant connection precaution ..................... ATC-8
Refrigerant discharging evacuating charging ATC-137
Refrigerant general precaution .......................... ATC-7
Refrigerant lines ............................................ ATC-137
Refrigerant pressure sensor ........... EC-609, EC-1287,
ATC-90
, ATC-155
Refrigeration cycle ........................................... ATC-21
Removal and installation (A/T) ........... AT-266, AT-269
Removal and installation (Transfer) .................... TF-43
Revolution sensor (A/T) ...................... AT-116, AT-260
Ring gear diff. inspection ................................. RFD-13
Rocker cover(VK45DE) ................................... EM-193
Rocker cover(VQ35DE) ..................................... EM-51
Room lamp - See Interior lamp ......................... LT-157
ROOM/L - Wiring diagram ................................ LT-164
RP/SEN - Wiring diagram ................ EC-610, EC-1288
S
Seal - See Exterior .............................................. EI-28
SEAT - Wiring diagram ...................................... SE-95
Seat belt inspection ............................................. SB-8
Seat belt pre-tensioner disposal ...................... SRS-49
Seat belt, front ..................................................... SB-4
Seat, rear ......................................................... SE-107
Self-diagnosis (Transfer) .................................... TF-21
SEN/PW - Wiring diagram ............... EC-490, EC-1157
SHIFT - Wiring diagram ................................... AT-236
Shift change signal ........................................ EC-1218
Shift lock system .............................................. AT-235
Shift schedule .................................................. AT-348
Shock absorber (rear) ....................................... RSU-9
Side air bag (satellite) sensor .......................... SRS-46
Side bearing preload diff. ................................. RFD-20
Side curtain air bag .......................................... SRS-43
Side flange installation diff. .............................. RFD-10
Side trim .............................................................. EI-37
SMJ (super multiple junction) ............................ PG-79
Spark plug replacement .................................... MA-26
Spark plug replacement(VQ35DE) ................... MA-19
Spark plug(VK45DE) ...................................... EM-186
Spark plug(VQ35DE) ........................................ EM-43
Specification value ............................. EC-131, EC-780
Speedometer ........................................................ DI-4
Spiral cable ..................................................... SRS-38
Spot lamp .......................................................... LT-184
SROOF - Wiring diagram ..................... BL-167, RF-14
SRS - See Supplemental Restraint System ..... SRS-5
SRS Trouble diagnoses .................................... SRS-7
Stabilizer bar (rear) ......................................... RSU-16
Stall test (A/T) .................................................... AT-51
Standardized relay ............................................. PG-81
START - Wiring diagram .................................... SC-11
Starter ................................................................ SC-10
Starting system .................................................. SC-10
Steering gear and linkage inspection ................ MA-35
Steering linkage ................................................. PS-19
Steering wheel and column ................... PS-10, PS-12
Steering wheel turning force .............................. PS-10
Step lamp .......................................................... LT-124
Stop lamp .......................................................... LT-116
Stop lamp switch .............................. EC-550, EC-1220
STOP/L - Wiring diagram .................................. LT-118
Sun roof, electric ................................................ RF-10
Sunload sensor ............................. ATC-110, ATC-119
Sunroof .................................................. RF-10, RF-25
Supplemental Restraint System ....................... SRS-5
Suspension ....................................................... MA-36
Symbols and abbreviations ...................... GI-10, GI-23
T
Tachometer ........................................................... DI-4
TCM circuit diagram ........................................... AT-50
TCM inspection table ......................................... AT-90
Thermostat(VK45DE) ....................................... CO-51
Thermostat(VQ35DE) ....................................... CO-26
Three way catalyst function (Bank 1) . EC-316, EC-971
Three way catalyst function (Bank 2) . EC-316, EC-971
Three way catalyst precautions ............................ GI-6
Three way catalyst(VK45DE) .......................... EM-178
Three way catalyst(VQ35DE) ........................... EM-26
Throttle control motor ....................... EC-428, EC-1090
Throttle control motor relay .............. EC-423, EC-1085
Throttle position sensor (TPS) .......... EC-190, EC-284,
EC-485
, EC-487, EC-569, EC-848, EC-942, EC-1152,
EC-1154
, EC-1239
Tie-rod ............................................................... PS-19
Timing chain(VK45DE) ................................... EM-196
Timing chain(VQ35DE) ..................................... EM-63
Tire rotation ............................................. WT-6, MA-34
Tooth contact diff. ........................................... RFD-24
Top tether strap child restraint ........................... SB-12
Torque converter installation AT-267, AT-268, AT-272
Torque convertor clutch solenoid valve AT-123, AT-125
TPS1 - Wiring diagram ...................... EC-286, EC-944
TPS2 - Wiring diagram ...................... EC-192, EC-850

LAN-1
LAN SYSTEM
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SECTION LAN
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LAN
Revision: 2004 November 2004 FX35/FX45
LAN SYSTEM
CAN
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions When Using CONSULT-II ..................... 4
CHECK POINTS FOR USING CONSULT-II ......... 4
Precautions For Trouble Diagnosis .......................... 4
CAN SYSTEM ....................................................... 4
Precautions For Harness Repair .............................. 5
CAN SYSTEM ....................................................... 5
CAN COMMUNICATION ............................................ 6
System Description .................................................. 6
CAN Communication Unit ........................................ 6
TYPE 1/TYPE2 ..................................................... 6
TYPE 3 .................................................................. 9
TYPE 4/TYPE5 ................................................... 13
TYPE 6 ................................................................ 16
CAN SYSTEM (TYPE 1) ........................................... 21
System Description ................................................ 21
Component Parts and Harness Connector Location ... 21
Wiring Diagram - CAN - ......................................... 22
Work Flow .............................................................. 24
CHECK SHEET ................................................... 26
CHECK SHEET RESULTS (EXAMPLE) ............. 28
Circuit Check Between TCM and Data Link Con-
nector ..................................................................... 41
Circuit Check Between Data Link Connector and
Unified Meter and A/C Amp. .................................. 41
Circuit Check Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit) ... 42
ECM Circuit Check ................................................. 42
TCM Circuit Check ................................................. 43
Display Unit Circuit Check ...................................... 43
Data Link Connector Circuit Check ........................ 44
BCM Circuit Check ................................................. 44
Steering Angle Sensor Circuit Check ..................... 45
Unified Meter and A/C Amp. Circuit Check ............ 45
ABS Actuator and Electric Unit (Control Unit) Circuit
Check ..................................................................... 46IPDM E/R Circuit Check ......................................... 46
CAN Communication Circuit Check ........................ 47
IPDM E/R Ignition Relay Circuit Check .................. 51
Component Inspection ............................................ 51
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
TION .................................................................... 51
CAN SYSTEM (TYPE 2) ........................................... 52
System Description ................................................. 52
Component Parts and Harness Connector Location ... 52
Wiring Diagram - CAN - .......................................... 53
Work Flow ............................................................... 55
CHECK SHEET ................................................... 57
CHECK SHEET RESULTS (EXAMPLE) ............. 59
Circuit Check Between TCM and Data Link Con-
nector ...................................................................... 74
Circuit Check Between Data Link Connector and
Unified Meter and A/C Amp. ................................... 74
Circuit Check Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit) ... 75
Circuit Check Between ABS Actuator and Electric
Unit (Control Unit) and Driver Seat Control Unit ..... 76
ECM Circuit Check ................................................. 76
TCM Circuit Check ................................................. 77
Display Unit Circuit Check ...................................... 77
Data Link Connector Circuit Check ........................ 78
BCM Circuit Check ................................................. 78
Steering Angle Sensor Circuit Check ..................... 79
Unified Meter and A/C Amp. Circuit Check ............ 79
ABS Actuator and Electric Unit (Control Unit) Circuit
Check ..................................................................... 80
Driver Seat Control Unit Circuit Check ................... 80
IPDM E/R Circuit Check ......................................... 81
CAN Communication Circuit Check ........................ 82
IPDM E/R Ignition Relay Circuit Check .................. 86
Component Inspection ............................................ 86
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
TION .................................................................... 86
CAN SYSTEM (TYPE 3) ........................................... 87
System Description ................................................. 87
Component Parts and Harness Connector Location ... 87