relay INFINITI FX35 2005 Service Manual

LT-80
FRONT FOG LAMP
Revision: 2005 July 2005 FX

to BCM terminal 38.
When ignition switch is in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 11.
Ground is supplied

to BCM terminals 49 and 52

through grounds M35, M45 and M85,

to IPDM E/R terminals 38 and 60

through grounds E21, E50 and E51.
FRONT FOG LAMP OPERATION
The front fog lamp switch is built into combination switch. The lighting switch must be in the 2ND position or
AUTO position (headlamp is ON) and the front fog lamp switch must be ON for front fog lamp operation.
With the front fog lamp switch in the ON position, the CPU located in the IPDM E/R grounds the coil side of the
front fog lamp relay. The front fog lamp relay then directs power

through IPDM E/R terminal 37

to front fog lamp LH terminal 1,

through IPDM E/R terminal 36

to front fog lamp RH terminal 1.
Ground is supplied

to front fog lamp LH terminal 2

through grounds E21, E50 and E51,

to front fog lamp RH terminal 2

through grounds E21, E50 and E51.
With power and grounds supplied, front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), the front fog lamp switch is ON, and
the ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the front fog lamps (and headlamps) remain illuminated for 5 minutes, then the front fog
lamps (and headlamps) are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007CJ
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 UnitAKS0080V
Refer to LAN-30, "CAN Communication Unit" .

LT-92
TURN SIGNAL AND HAZARD WARNING LAMPS
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Connected from BCM terminal 45 to front combination lamp LH terminal 4.
Turn signal lamp turns ON

through front combination lamp LH terminal 8

to grounds E21, E50 and E51.
Connected from BCM terminal 45 to rear combination lamp control unit terminal 4.
Rear turn signal (LED) turns ON

through rear combination lamp control unit terminal 11

to rear combination lamp LH terminal 3,

through rear combination lamp LH terminal 4

to rear combination lamp control unit terminal 10.
BCM sends signal to the unified meter and A/C amp. through CAN communication lines, and turns ON turn
signal indicator lamp with combination meter.
When rear turn signal lamp (LED) does not turn ON, rear combination lamp control unit sends signal to combi-
nation meter. And then unified meter and A/C amp. ends turn LED burnout status signal to BCM through CAN
communication lines for speeding up turn signal blinking.
RH Turn Signal Lamp
When the turn signal switch is moved to right position, BCM output turn signal from BCM terminal 46, interpret-
ing it as turn signal is ON.
Connected from BCM terminal 46 to front combination lamp RH terminal 4.
Turn signal lamp turns ON

through front combination lamp RH terminal 8

to grounds E21, E50 and E51.
Connected form BCM terminal 46 to rear combination lamp control unit terminal 5.
Rear turn signal (LED) turns ON

through rear combination lamp control unit terminal 9

to rear combination lamp RH terminal 3,

through rear combination lamp RH terminal 4

to rear combination lamp control unit terminal 8.
BCM sends signal to the unified meter and A/C amp. through CAN communication lines, and turns ON turn
signal indicator lamp with combination meter.
When rear turn signal lamp (LED) does not turn ON, rear combination lamp control unit sends signal to combi-
nation meter. And then unified meter and A/C amp. ends turn LED burnout status signal to BCM through CAN
communication lines for speeding up turn signal blinking.
HAZARD LAMP OPERATION
Power is supplied at all times

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

to BCM terminal 55,

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8,

through 10A fuse [No. 20, located in fuse block (J/B)]

to rear combination lamp control unit terminal 1.
Ground is supplied

through BCM terminals 49 and 52

to grounds M35, M45 and M85,

through rear combination lamp control unit terminal 7

to grounds E21, E50 and E51,

through combination meter terminals 5, 6 and 15

to grounds M35, M45 and M85.
When hazard switch is depressed, ground is supplied

to hazard switch terminal 2

through BCM terminal 29,

TURN SIGNAL AND HAZARD WARNING LAMPS LT-93
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to grounds M35, M45 and M85

through hazard switch terminal 1.
When the hazard switch is depressed, BCM output turn signal from BCM terminals 45 and 46, interpreting it as
turn signal is ON.
Connected from BCM terminal 45 and 46 to front combination lamp terminal 4.
Turn signal lamp turns ON

through front combination lamp terminal 8

to grounds E21, E50 and E51.
Connected form BCM terminals 45 and 46 to rear combination lamp control unit terminals 4 and 5.
Rear turn signal (LED) turns ON

through rear combination lamp control unit terminal 11

to rear combination lamp LH terminal 3,

through rear combination lamp LH terminal 4

to rear combination lamp control unit terminal 10,

through rear combination lamp control unit terminal 9

to rear combination lamp RH terminal 3,

through rear combination lamp RH terminal 4

to rear combination lamp control unit terminal 8.
BCM sends signal to the unified meter and A/C amp. through CAN communication lines, and turns ON turn
signal indicator lamp with combination meter.
When rear turn signal lamp (LED) does not turn ON, rear combination lamp control unit sends signal to combi-
nation meter. And then unified meter and A/C amp. ends turn LED burnout status signal to BCM through CAN
communication lines for speeding up turn signal blinking.
REMOTE CONTROL ENTRY SYSTEM OPERATION
Power is supplied at all times

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

to BCM terminal 55,

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8,

through 10A fuse [No. 20, located in fuse block (J/B)]

to rear combination lamp control unit terminal 1.
Ground is supplied

to BCM terminals 49 and 52

through grounds M35, M45 and M85,

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51,

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85.
When the remote control entry system is triggered by input from key fob, BCM output turn signal from BCM
terminals 45 and 46, interpreting it as turn signal is ON.
Connected from BCM terminals 45 and 46 to front combination lamp terminal 4.
Turn signal lamp turns ON

through front combination lamp terminal 8

to grounds E21, E50 and E51.
Connected form BCM terminals 45 and 46 to rear combination lamp control unit terminals 4 and 5.
Rear turn signal (LED) turns ON

through rear combination lamp control unit terminal 11

to rear combination lamp LH terminal 3,

through rear combination lamp LH terminal 4

to rear combination lamp control unit terminal 10,

through rear combination lamp control unit terminal 9

PARKING, LICENSE PLATE AND TAIL LAMPS LT-129
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PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationAKS007O7
System DescriptionAKS007DT
Control of the parking, license plate, side marker and tail lamp operation is dependent upon the position of the
lighting switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body
control module) receives input signal requesting the parking, license plate, side marker and tail lamps to illumi-
nate. This input signal is communicated to the IPDM E/R (intelligent power distribution module engine room)
across the CAN communication lines. CPU (central processing unit) located in the IPDM E/R controls the tail
lamp relay coil. This relay, when energized, directs power to the parking, license plate, side marker and tail
lamps, which then illuminate.
The current that flows by Rear combination lamp control unit is controlled, and a tail lamp (LED) is made to
turn ON.
OUT LINE
Power is supplied at all times

through 10A fuse (No. 71, located in IPDM E/R)

to tail lamp relay, located in IPDM E/R, and

to CPU located in IPDM E/R,
PKIB3478E

LT-130
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2005 July 2005 FX

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R.
Power is also supplied at all times

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

to BCM terminal 55,

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM terminal 42,

through 10A fuse [No. 20, located in fuse block (J/B)]

to rear combination lamp control unit terminal 1,

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8, and

to unified meter and A/C amp. terminal 21.
With ignition switch in ON or START position, power is supplied

through ignition relay, located in IPDM E/R, from battery direct,

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM terminal 38,

through 10A fuse [No. 14, located in fuse block (J/B)]

to combination meter terminal 7,

through 10A fuse [No. 12, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22.
With ignition switch in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 11.
Ground is supplied

to BCM terminals 49 and 52

through grounds M35, M45 and M85,

to IPDM E/R terminals 38 and 60

through grounds E21, E50 and E51,

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51,

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85,

to unified meter and A/C amp. terminals 29 and 30

through grounds M35, M45 and M85.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the parking, license plate, side marker and tail lamps to illuminate. This input signal is
communicated to the IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R con-
trols the tail lamp relay coil, which when energized, directs power.

through IPDM E/R terminal 22

to front side marker lamp LH terminal 1

to clearance lamp LH terminal 2

to license plate lamp LH terminal 1

to rear combination lamp LH terminal 1

to rear combination lamp control unit terminal 2

to front side marker lamp RH terminal 1

to clearance lamp RH terminal 2

to license plate lamp RH terminal 1, and

to rear combination lamp RH terminal 1.

PARKING, LICENSE PLATE AND TAIL LAMPS LT-147
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5. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Disconnect rear combination lamp RH and LH connector.
2. Check continuity between rear combination lamp control unit harness connector B65 terminal 11 (W) and rear combination
lamp LH harness connector B57 terminal 3 (W).
3. Check continuity between rear combination lamp control unit harness connector B65 terminal 10 (BR) and rear combination
lamp LH harness connector B57 terminal 4 (BR).
4. Check continuity between rear combination lamp control unit harness connector B65 terminal 9 (LG) and rear combination lamp RH harness connector B219 terminal 3
(LG).
5. Check continuity between rear combination lamp control unit harness connector B65 terminal 8 (Y) and rear combination lamp RH harness connector B219 terminal 4 (Y).
OK or NG
OK >> Replace rear combination lamp control unit or rear combination lamp, and then check if turn signal lamps is illuminated.
NG >> Repair harness or connector.
Parking, License Plate, Side Maker and Tail Lamps Do Not Turn OFF (After
Approx. 10 Minutes)
AKS007E4
1. CHECK IPDM E/R
1. Turn ignition switch ON. Turn combination switch (lighting switch) to the OFF position. Turn ignition switch OFF.
2. Verify that parking, license plate, and tail lamps turn on and off after approximately 10 minutes.
OK or NG
OK >> Ignition relay malfunction. Refer to PG-19, "Function of Detecting Ignition Relay Malfunction" .
NG >> INSPECTION END
License Plate LampAKS007E5
BULB REPLACEMENT, REMOVAL AND INSTALLATION
1. Remove screws and remove license plate lamp from back door.
2. Disconnect license plate lamp connector. 11 (W) – 3 (W) : Continuity should exist.
10 (BR) – 4 (BR) : Continuity should exist.
9 (LG) – 3 (LG) : Continuity should exist.
8 (Y) – 4 (Y) : Continuity should exist.
SKIA5910E
SKIA5567E

LT-160
INTERIOR ROOM LAMP
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When the room lamp and personal lamp turns ON, there is a gradual brightening over 1 second. When room
lamp and personal lamp turns OFF, there is a gradual dimming over 1 second.
The room lamp and personal lamp timer is controlled by the BCM (body control module).
Room lamp and personal lamp timer control settings can be changed with CONSULT-II.
Ignition keyhole illumination turns ON at time when driver door is opened (door switch ON) or removed keyfob
from key cylinder. Illumination turns OFF when driver door is closed (door switch OFF).
Step lamp turns ON at time when driver door or passenger door is opened (door switch ON). Lamp turns OFF
when the driver, passenger doors are closed (all door switches OFF).
POWER SUPPLY AND GROUND
Power is supplied at all times (without Intelligent Key system)

through 15A fuse [No. 22, located in fuse block (J/B)]

to key switch terminal 2, and

to BCM terminal 42,

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

to BCM terminal 55,

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8.
Power is supplied at all times (with Intelligent Key system)

through 10A fuse (No.38, located in fuse, fusible link and relay box)

to key switch and ignition knob switch terminal 1,

through 15A fuse [No.22, located in fuse block (J/B)]

to BCM terminal 42,

to key switch and ignition knob switch terminal 3,

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

to BCM terminal 55,

through 10A fuse [No. 19, located in fuse block (J/B)]

to combination meter terminal 8.
When key plate inserted to key switch, power is supplied (without Intelligent Key system)

through key switch terminal 1

to BCM terminal 37.
When inserted key plate to key switch, power is supplied (with Intelligent Key system)

through key switch and ignition knob switch terminal 4

to BCM terminal 37.
When moved ignition knob switch, power is supplied (with Intelligent Key system)

through ignition knob switch terminal 2

to intelligent key unit terminal 27.
With ignition switch in the ON or START position, power is supplied

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM terminal 38.
Ground is supplied

to BCM terminals 49 and 52

through grounds terminals M35, M45 and M85.
When driver side door is opened, ground is supplied

through case ground of front door switch (driver side)

through front door switch (driver side) terminal 1

to BCM terminal 62.
When passenger side door is opened, ground is supplied

through case ground of front door switch (passenger side)

through front door switch (passenger side) terminal 1

to BCM terminal 12.

ILLUMINATION LT-189
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ILLUMINATIONPFP:27545
System DescriptionAKS007EI
Control of illumination lamps operation is dependent upon position of lighting switch (combination switch).
When lighting switch is placed in the 1ST or 2ND position (or if auto light system is activated), BCM (body con-
trol module) receives input signal requesting illumination lamps to illuminate. This input signal is communi-
cated to IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines.
The CPU (central processing unit) located in the IPDM E/R controls tail lamp relay coil. This relay, when ener-
gized, directs power to illumination lamps, which then illuminate.
Power is supplied at all times

through 10A fuse (No. 71, located in IPDM E/R)

to tail lamp relay, located in IPDM E/R, and

to CPU located in IPDM E/R.
Power is also supplied at all times

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

to BCM terminal 55,

through 15A fuse [No. 22 located in fuse block (J/B)]

to BCM terminal 42,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R,

through 10A fuse [No. 19 located in fuse block (J/B)]

to unified meter and A/C amp. terminal 21, and

to combination meter terminal 8.
With ignition switch in ON or START position, power is supplied

to ignition relay, located in IPDM E/R, from battery direct,

through 15A fuse [No. 1 located in fuse block (J/B)]

to BCM terminal 38,

through 10A fuse [No. 12, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22,

through 10A fuse [No. 14 located in fuse block (J/B)]

to combination meter terminal 7.
With ignition switch in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 11.
Ground is supplied

to BCM terminals 49 and 52

to unified meter and A/C amp. terminals 29 and 30, and

to combination meter terminals 5, 6, and 15

through grounds M35, M45, and M85,

to IPDM E/R terminals 38 and 60

through grounds E21, E50, and E51.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With lighting switch in the 1ST or 2ND position (or if auto light system is activated), BCM receives input signal
requesting illumination lamps to illuminate. This input signal is communicated to IPDM E/R across the CAN
communication lines. The CPU located in the IPDM E/R controls tail lamp relay coil, which, when energized,
directs power

through IPDM E/R terminal 22

to glove box lamp terminal 1

to A/T device (illumination) terminal 11

to snow mode switch (illumination) terminal 5

to VDC off switch (illumination) terminal 3

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING CIRCUIT ...................... 3
Schematic ........................................................... ..... 3
Wiring Diagram - POWER - ................................ ..... 4
BATTERY POWER SUPPLY - IGNITION SW. IN
ANY POSITION ................................................ ..... 4
ACCESSORY POWER SUPPLY - IGNITION SW.
IN “ACC” OR “ON” ........................................... ... 10
IGNITION POWER SUPPLY - IGNITION SW. IN
“ON” AND/OR “START” .................................... ... 12
Fuse .................................................................... ... 17
Fusible Link ......................................................... ... 17
Circuit Breaker .................................................... ... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ................................... ... 18
System Description ............................................. ... 18
SYSTEMS CONTROLLED BY IPDM E/R ........ ... 18
CAN COMMUNICATION LINE CONTROL ...... ... 18
IPDM E/R STATUS CONTROL ........................ ... 19
CAN Communication System Description ........... ... 19
CAN Communication Unit ................................... ... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function (IPDM E/R) ...................... ... 20
CONSULT-II INSPECTION PROCEDURE ...... ... 20
SELF-DIAG RESULTS ..................................... ... 21
DATA MONITOR .............................................. ... 22
ACTIVE TEST .................................................. ... 22
Auto Active Test .................................................. ... 24
DESCRIPTION ................................................. ... 24
OPERATION PROCEDURE ............................ ... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic ........................................................... ... 26
IPDM E/R Terminal Arrangement ........................ ... 27
IPDM E/R Power/Ground Circuit Inspection ....... ... 28
Inspection With CONSULT-II (Self-Diagnosis) .... ... 29
Removal and Installation of IPDM E/R ................ ... 30
REMOVAL ........................................................ ... 30
INSTALLATION ................................................ ... 30 GROUND ................................................................
... 31
Ground Distribution .............................................. ... 31
MAIN HARNESS .............................................. ... 31
ENGINE ROOM HARNESS ............................. ... 34
ENGINE HARNESS/VK ENGINE MODELS ..... ... 37
ENGINE HARNESS/VQ ENGINE MODELS .... ... 38
ENGINE CONTROL HARNESS/VK ENGINE
MODELS .......................................................... ... 39
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS .......................................................... ... 40
BODY HARNESS ............................................. ... 41
BODY NO. 2 HARNESS .................................. ... 44
ROOM LAMP HARNESS ................................. ... 45
HARNESS .............................................................. ... 46
Harness Layout ................................................... ... 46
HOW TO READ HARNESS LAYOUT .............. ... 46
OUTLINE .......................................................... ... 47
MAIN HARNESS .............................................. ... 48
ENGINE ROOM HARNESS ............................. ... 51
ENGINE HARNESS/VK ENGINE MODELS ..... ... 54
ENGINE HARNESS/VQ ENGINE MODELS .... ... 55
ENGINE CONTROL HARNESS/VK ENGINE
MODELS .......................................................... ... 56
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS .......................................................... ... 58
BODY HARNESS ............................................. ... 60
BODY NO. 2 HARNESS .................................. ... 62
ROOM LAMP HARNESS ................................. ... 63
FRONT DOOR HARNESS ............................... ... 64
REAR DOOR HARNESS ................................. ... 65
BACK DOOR HARNESS ................................. ... 66
Wiring Diagram Codes (Cell Codes) ................... ... 67
ELECTRICAL UNITS LOCATION ......................... ... 70
Electrical Units Location ...................................... ... 70
ENGINE COMPARTMENT ............................... ... 70
PASSENGER COMPARTMENT ...................... ... 71
LUGGAGE COMPARTMENT ........................... ... 73
HARNESS CONNECTOR ...................................... ... 74
Description ........................................................... ... 74
HARNESS CONNECTOR (TAB-LOCKING

PG-2Revision: 2005 July 2005 FX
TYPE) ...............................................................
... 74
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) ............................................................... ... 75
ELECTRICAL UNITS ............................................. ... 76
Terminal Arrangement ......................................... ... 76
SMJ (SUPER MULTIPLE JUNCTION) .................. ... 78
Terminal Arrangement ......................................... ... 78 STANDARDIZED RELAY .......................................
... 80
Description ........................................................... ... 80
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ..................................... ... 80
TYPE OF STANDARDIZED RELAYS ............... ... 80
FUSE BLOCK - JUNCTION BOX (J/B) ................. ... 82
Terminal Arrangement .......................................... ... 82
FUSE, FUSIBLE LINK AND RELAY BOX ............. ... 83
Terminal Arrangement .......................................... ... 83