ignition INFINITI M35 2007 Factory Service Manual

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" .

LT-202
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003R8
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to LT- 2 3 8 , "
DATA MONITOR" .
Termi-
nal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
3 O/LCombination
switch input 4ONLighting, turn, wiper
switch
(Wiper dial position
4)Front fog lamp switch
ON (Operates only front
fog lamp switch)
Approx. 0.8 V
OFF Approx. 0 V
11 VIgnition switch
(ACC)ACC — Battery voltage
32 LGCombination
switch output 5ONLighting, turn, wiper
switch
(Wiper dial position
4)Front fog lamp switch
ON (Operates only front
fog lamp switch)
Approx. 1.0 V
OFF
Approx. 7.0 - 7.5 V
37 LG Key switch signal OFFIntelligent Key is inserted into key slot. Battery voltage
Intelligent Key is removed from key slot. Approx. 0 V
38 WIgnition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 PBattery power
supplyOFF — Battery voltage
52 B Ground ON — Approx. 0 V
55 WBattery power
supplyOFF — Battery voltage
PKIB4955J
PKIB4956J
PKIB4960J

FRONT FOG LAMP
LT-203
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for IPDM E/RNKS003R9
How to Perform Trouble DiagnosesNKS003RA
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 9 4 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 2 0 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the front fog lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS003RB
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
62 VFront door switch
driver side signalOFFFront door switch
driver sideON (open) Approx. 0 V
OFF (closed)
Approx. 7.5 - 8.0 V Te r m i -
nal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4960J
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
36 L/Y Front fog lamp (LH) ONLighting switch must be in
the 2ND position or AUTO
position (headlamp is ON)Front fog lamp switch: OFF Approx. 0 V
Front fog lamp switch: ON Battery voltage
37 W/R Front fog lamp (RH) ONLighting switch must be in
the 2ND position or AUTO
position (headlamp is ON)Front fog lamp switch: OFF Approx. 0 V
Front fog lamp switch: ON Battery voltage
38 B Ground ON — Approx. 0 V
49 L CAN − H— — —
50 P CAN − L— — —
51 B Ground ON — Approx. 0 V
Unit Power source Fuse and fusible link No.
BCMBatteryF
21
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
IPDM E/R Battery71
88
78

LT-204
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
Refer to LT-198, "Wiring Diagram — F/FOG —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between BCM and
fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check harness ground circuit.
CONSULT-II Functions (BCM)NKS003RC
Refer to LT- 5 7 , "CONSULT-II Functions (BCM)" in HEADLAMP (FOR USA) -XENON TYPE-.
Refer to LT- 2 3 , "
CONSULT-II Functions (BCM)" in HEADLAMP (FOR USA) -CONVENTIONAL TYPE-.
Refer to LT- 9 4 , "
CONSULT-II Functions (BCM)" in HEADLAMP (FOR CANADA).
CONSULT-II Functions (IPDM E/R)NKS003RD
Refer to LT- 5 9 , "CONSULT-II Functions (IPDM E/R)" in HEADLAMP (FOR USA) -XENON TYPE-.
Refer to LT- 2 5 , "
CONSULT-II Functions (IPDM E/R)" in HEADLAMP (FOR USA) -CONVENTIONAL TYPE-.
Refer to LT- 9 6 , "
CONSULT-II Functions (IPDM E/R)" in HEADLAMP (FOR CANADA).
Terminal Ignition switch position
(+)
(-) OFF ACC ON
BCM
connectorTerminal
M111
GroundApprox.
0VBattery
voltageBattery
voltage
38Approx.
0VApprox.
0VBattery
voltage
M242Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

LT-206
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
4. CHECK FOG LAMP INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front fog lamp RH and LH connector.
3. Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “LAMPS” on “SELECT TEST ITEM” screen.
5. Touch “FOG” screen.
6. Check voltage between front fog lamp (RH and LH) harness
connector and ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front fog lamp RH and LH connector.
3. Start auto active test. Refer to PG-23, "
Auto Active Test" .
4. When fog lamp is operating, check voltage between front fog lamp (RH and LH) harness connector and
ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 6.
5. CHECK FOG LAMP GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front fog lamp (RH and LH) harness
connector and ground.
OK or NG
OK >> Check front fog lamp bulbs.
NG >> Repair harness or connector.
Terminal
Voltage
(Approx.) (+)
(-)
Front fog lamp connector Terminal
RH E45 1
Ground Battery voltage
LH E60 1
Terminal
Voltage
(Approx.) (+)
(-)
Front fog lamp connector Terminal
RH E45 1
Ground Battery voltage
LH E60 1
PKIA6276E
Front fog lamp connector Terminal
GroundContinuity
RH E45 2
Ye s
LH E60 2
PKIA6277E

FRONT FOG LAMP
LT-207
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
6. CHECK FRONT FOG LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front fog lamp (RH and LH) harness connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and Installation of IPDM E/R" .
NG >> Repair harness or connector.
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E837 E45 1
Ye s
LH 36 E60 1
A
GroundContinuity
Connector Terminal
RH
E837
No
LH 38
SKIB4815E

LT-208
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
Front Fog Lamp Does Not Illuminate (One Side)NKS003RF
1. CHECK BULB
Check bulb of fog lamp which does not illuminate.
OK or NG
OK >> GO TO 2.
NG >> Replace front fog lamp bulb.
2. CHECK FOG LAMP INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front fog lamp RH or LH connector.
3. Turn ignition switch ON.
4. Lighting switch is turned 2ND position and fog lamp ON position.
5. Check voltage between front fog lamp RH or LH harness con-
nector and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK FRONT FOG LAMP GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front fog lamp RH or LH harness con-
nector and ground.
OK or NG
OK >> Check connecting condition front fog lamp harness con-
nector.
NG >> Repair harness or connector.
Terminal
Voltage
(Approx.) (+)
(-)
Front fog lamp connector Terminal
RH E45 1
Ground Battery voltage
LH E60 1
PKIA6276E
Front fog lamp connector Terminal
Ground Continuity
RH E45 2
Ye s
LH E60 2
PKIA6277E

FRONT FOG LAMP
LT-209
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
4. CHECK FOG LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front fog lamp RH or LH harness connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and Installation of IPDM E/R" .
NG >> Repair harness or connector.
Front Fog Lamps Do Not Turn OFFNKS003RG
1. CHECK FRONT FOG LAMP TURN OFF
Make sure that lighting switch is OFF. And make sure front fog lamp turns off when ignition switch is turned
OFF.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “FR FOG SW” turns ON-OFF linked with operation of fog
lamp switch.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and
Installation of IPDM E/R" .
NG >> Check combination switch (lighting switch). Refer to LT-
239, "Combination Switch Inspection" .
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E836 E60 1
Ye s
LH 37 E45 1
A
GroundContinuity
Connector Terminal
RH
E836
No
LH 37
SKIB4815E
When fog lamp switch is
OFF position: FR FOG SW OFF
PKIB9378E

LT-212
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2007 April2007 M35/M45
TURN SIGNAL AND HAZARD WARNING LAMPSPFP:26120
Component Parts and Harness Connector LocationNKS003RK
System DescriptionNKS003RL
TURN SIGNAL OPERATION
With the ignition switch is in the ON or START position, power is supplied

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

to BCM (body control module) 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.
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

through grounds M16 and M70.
PKIC0620E

LT-220
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003RQ
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to LT- 2 3 8 , "
DATA MONITOR" .
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2L/RCombination
switch input 5ONLighting, turn, wiper
switch
(Wiper dial position 4)Turn signal switch to
right
Approx. 1.0 V
OFF Approx. 0 V
3 O/LCombination
switch input 4ONLighting, turn, wiper
switch
(Wiper dial position 4)Turn signal switch to left
Approx. 1.0 V
OFF Approx. 0 V
29 V/RHazard switch
signalOFF Hazard switchON Approx. 0 V
OFF Battery voltage
36 VCombination
switch output 1ONLighting, turn, wiper
switch
(Wiper dial position 4)
Any of several con-
ditions below

Turn signal switch to
right

Turn signal switch to
left
Approx. 1.2 V
OFF
Approx. 7.0 - 7.5 V
38 WIgnition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 PBattery power
supplyOFF — Battery voltage
PKIB4957J
PKIB4957J
PKIB4958J
PKIB4960J