relay INFINITI M35 2007 Factory Service Manual

LT-130
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
ACTIVE TEST
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
NOTE:
This item is tested only for CANADA models.
Symptom ChartNKS003QA
Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
FR FOG LAMP Allows front fog lamp relay to operate by switching ON-OFF.
DAYTIME RUNNING LIGHT
NOTEAllows daytime light relay to operate by switching ON-OFF.
HEAD LAMP (HI, LO) Allows headlamp relay to operate by switching ON-OFF.
Phenomenon Malfunction system and reference

Parking lamps and headlamps will not illuminate when outside
of the vehicle becomes dark. (Lighting switch 1ST position and
2ND position operate normally.)

Parking lamps and headlamp will not go out when outside of the
vehicle becomes light. (Lighting switch 1ST position and 2ND
position operate normally.)

Headlamps go out when outside of the vehicle becomes light,
but parking lamps stay on.

Refer to LT-128, "WORK SUPPORT" .

Refer to LT-131, "Lighting Switch Inspection" .

Refer to LT-131, "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
Parking lamps illuminate when outside of the vehicle becomes
dark, but headlamps stay off. (Lighting switch 1ST position and
2ND position operate normally.)

Refer to LT-128, "WORK SUPPORT" .

Refer to LT-131, "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
With the ignition key in ACC position, headlamps, clearance
lamps, tail lamps, etc. will not go out when the driver's door is
opened.

Refer toBL-94, "Check Door Switch" .
If above system is normal, replace BCM.
Auto light adjustment system will not operate. (Lighting switch
AUTO, 1ST position and 2ND position operate normally.)

Refer to LT-131, "Optical Sensor System Inspection" .
If above system is normal, replace BCM.
Auto light adjustment system of combination meter will not oper-
ate.

CAN communication line inspection between BCM and combi-
nation meter: Refer to BCS-13, "
CAN Communication Inspec-
tion Using CONSULT-II (Self-Diagnosis)" .

LT-194
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationNKS003R2
System DescriptionNKS003R3
The control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The
lighting switch must be in the 2ND position or AUTO position (headlamp is ON) for front fog lamp operation.
When the lighting switch is placed in fog lamp position, the BCM (body control module) receives input signal
requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communicated
to the 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 the front fog lamp relay coil. When activated,
this relay directs power to the front fog lamps.
PKIC1984E

FRONT FOG LAMP
LT-195
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
OUTLINE
Power is supplied at all times

through 15A fuse (No. 88, located in IPDM E/R)

to front fog lamp relay, located in IPDM E/R,

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

to CPU, located in IPDM E/R,

through 15A fuse (No. 71, located in IPDM E/R)

to CPU, located in IPDM E/R,

through 50A fusible link (letter F, located in fuse fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42, and

to combination meter terminal 23,

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

to unified meter and A/C amp. terminal 54,

through 10A fuse [No. 22, located in fuse block (J/B)]

to key slot terminal 1.
With the ignition switch in the ON or START position, power is supplied

to CPU, located in IPDM E/R,

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 12,

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

to unified meter and A/C amp. terminal 53.
With the ignition switch in the 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 terminal 52

to combination meter terminals 9, 10 and 11

to unified meter and A/C amp. terminals 55 and 71

to push-button ignition switch (push switch) terminal 1

to key slot terminal 8

through grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through grounds E22 and E43.

LT-196
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
FOG LAMP OPERATION
The fog lamp switch is built in combination switch. The lighting switch must be in 2ND position or AUTO posi-
tion (headlamp is ON) and fog lamp switch must be ON for fog lamp operation.
With the fog lamp switch in the ON position, the CPU located in IPDM E/R grounds coil side of the fog lamp
relay. Fog lamp relay then directs power

through IPDM E/R terminal 37

to front fog lamp RH terminal 1,

through IPDM E/R terminal 36

to front fog lamp LH terminal 1.
Ground is supplied

to front fog lamp RH terminal 2

through grounds E22 and E43,

to front fog lamp LH terminal 2

through grounds E22 and E43.
With power and grounds supplied, the front fog lamps illuminate.
The unified meter and A/C amp. that received the front fog lamp request signal by BCM across the CAN com-
munication makes a front fog lamp indicator lamp turn on in combination meter.
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), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionNKS003R4
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 UnitNKS003R5
Refer to LAN-50, "CAN System Specification Chart" .

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-213
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
LH Turn Signal Lamp
When turn signal switch is moved to left position, BCM receives input signal requesting left turn signals to
flash. BCM then supplies power

through BCM terminal 45

to front combination lamp LH (turn signal) terminal 10

to side turn signal lamp LH terminal 1, and

to rear combination lamp LH (turn signal) terminal 3.
Ground is supplied

to front combination lamp LH (turn signal) terminal 9

to side turn signal lamp LH terminal 2

through grounds E22 and E43,

to rear combination lamp LH (turn signal) terminal 4

through grounds B5, B40 and B131.
The BCM also supplies input to unified meter and A/C amp. terminals 56 and 72 across the CAN communica-
tion lines.
The unified meter and A/C amp. which received the turn indicator signal makes the left turn signal indicator
turn on in combination meter.
With power and input supplied, the BCM controls the flashing of the LH turn signal lamps.
RH Turn Signal Lamp
When turn signal switch is moved to right position, BCM receives input signal requesting right turn signals to
flash. BCM then supplies power

through BCM terminal 46

to front combination lamp RH (turn signal) terminal 10

to side turn signal lamp RH terminal 1, and

to rear combination lamp RH (turn signal) terminal 3.
Ground is supplied

to front combination lamp RH (turn signal) terminal 9

to side turn signal lamp RH terminal 2

through grounds E22 and E43,

to rear combination lamp RH (turn signal) terminal 4

through grounds B5, B40 and B131.
The BCM also supplies input to unified meter and A/C amp. terminals 56 and 72 across the CAN communica-
tion lines.
The unified meter and A/C amp. which received the turn indicator signal makes the right turn signal indicator
turn on in combination meter.
With power and input supplied, the BCM controls the flashing of the RH turn signal lamps.
HAZARD LAMP OPERATION
Power is supplied at all times

through 50A fusible link (letter F, located in fuse, fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42

to combination meter terminal 23,

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

to unified meter and A/C amp. terminal 54.
When the hazard switch is depressed, ground is supplied

to BCM terminal 29

through multifunction switch terminal 6.
Ground is supplied

to multifunction switch terminal 14

LT-248
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2007 April2007 M35/M45
PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationNKS003SH
System DescriptionNKS003SI
The control of the parking, license plate 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 and tail lamps to illuminate. This input sig-
nal is communicated to the 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 the tail lamp relay
coil. This relay, when energized, directs power to parking, license plate and tail lamps, which then illuminate.
OUTLINE
Power is supplied at all times

through 15A fuse (No. 71, located in IPDM E/R)

to CPU located in IPDM E/R, and

to tail lamp relay located in IPDM E/R,

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

to CPU located in IPDM E/R,

through 50A fusible link (letter F, located in fuse, fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42,

through 10A fuse [No. 22, located in fuse block (J/B)]

to key slot terminal 1.
PKID0503E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-249
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
With the ignition switch in the ON or START position, power is supplied

to CPU located in IPDM E/R,

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

to BCM terminal 38.
With the ignition switch in the 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 terminal 52

through grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through grounds E22 and E43.
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 and tail lamps to illuminate. This input signal is communi-
cated to the IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls the
tail lamp relay coil, which when energized, directs power

through IPDM E/R terminal 21

to front combination lamp LH and RH terminals 5 (parking)

to front combination lamp LH and RH terminals 7 (side marker)

to rear combination lamp LH and RH terminals 1 (tail and side marker)

to license plate lamp LH and RH terminals 1.
Ground is supplied at all times

to front combination lamp LH and RH terminals 1 (parking and side marker)

through grounds E22 and E43,

to rear combination lamp LH and RH terminals 4 (tail and side marker)

through grounds B5, B40 and B131.

to license plate lamp LH and RH terminals 2

through grounds B402 and B405.
With power and ground supplied, the parking, license plate and tail lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer toBCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position, and ignition switch is turned
from ON or ACC to OFF, battery saver control feature is activated.
Under this condition, parking, license plate, side marker and tail lamps remain illuminated for 5 minutes, then
the parking, license plate, side marker and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionNKS003SJ
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 UnitNKS003SK
Refer to LAN-50, "CAN System Specification Chart" .

LT-260
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2007 April2007 M35/M45
4. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “TAIL LAMP” on “SELECT TEST ITEM” screen.
5. Touch “ON” screen.
6. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp, rear
combination lamp harness connector and ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Start auto active test. Refer to PG-23, "
Auto Active Test" .
4. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp, rear
combination lamp harness connector and ground.
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
(parking) connectorTerminal
RH E47
5 Ground Battery voltage
LH E54
SKIB4832E
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
(side marker) connectorTerminal
RH E47
7 Ground Battery voltage
LH E54
SKIB4833E
Terminal
Voltage
(Approx.) (+)
(-)
Rear combination lamp
(tail) connectorTe r m i n a l
RH B130
1 Ground Battery voltage
LH B135
SKIB4834E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-263
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
6. CHECK PARKING, LICENSE PLATE AND TAIL LAMPS GROUND CIRCUIT
1. Check continuity between front combination lamp harness con-
nector and ground.
2. Check continuity between rear combination lamp harness con-
nector and ground.
3. Check continuity between license plate lamp harness connector
and ground.
OK or NG
OK >> Check bulbs.
NG >> Repair harness or connector.
Parking, License Plate and Tail Lamps Do Not Turn OFF (After Approx. 10 Min-
utes)
NKS003SU

This symptom indicates the malfunction of ignition relay in IPDM E/R. Refer to PG-19, "Function of
Detecting Ignition Relay Malfunction" .

Select “BCM” on CONSULT-II. Select “HEADLAMP” on “SELECT TEST ITEM” screen and select “DATA
MONITOR” on “SELECT DIAG MODE” screen. If “LIGHT SW 1ST” is OFF when lighting switch is OFF,
replace IPDM E/R.
Front combination lamp
(parking and side marker)
connectorTerminal
GroundContinuity
RH E47
1Yes
LH E54
SKIB4839E
Rear combination lamp
(tail and side marker)
connectorTerminal
GroundContinuity
RH B130
4 Yes
LH B135
SKIB4840E
License plate lamp
connectorTerminal
GroundContinuity
RH T105
2 Yes
LH T108
PKIB7990E

ILLUMINATION
LT-293
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
ILLUMINATIONPFP:27545
System DescriptionNKS003TH
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the 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 the tail lamp relay
coil. This relay, when energized, directs power to the illumination lamps, which then illuminate.
OUTLINE
Power is supplied at all times

through 15A 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,

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

to CPU located in IPDM E/R,

through 50A fusible link (letter F, located in fuse, fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42 and

to combination meter terminal 23,

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

to unified meter and A/C amp. terminal 54,

through 10A fuse [No. 22, located in fuse block (J/B)]

to intelligent key unit terminals 1, 41 and 57.
With the 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,

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

to combination meter terminal 12,

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

to unified meter and A/C amp. terminal 53 and

to rear sunshade cancel relay terminal 1.
With the ignition switch in the ACC or ON position, power is supplied

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

to BCM terminal 11

to unified meter and A/C amp. terminal 41 and

to combination meter terminal 2.
Ground is supplied

to BCM terminal 52

to unified meter and A/C amp. terminals 55 and 71

to combination meter terminals 9, 10, and 11

to Intelligent Key unit terminals 20, 40, 56 and 72, and

to illumination control switch terminal 3

through grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through grounds E22 and E43.