2007 INFINITI M35 ignition coil

IGNITION SIGNAL
EC-1421
[VK45DE]
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Revision: 2007 April2007 M35/M45
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness connector F3

Harness for open or short between ignition coil and harness connector F3
>> Repair or replace harness or connectors.
12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 13.
NG >> Repair open circuit or short to power in harness or connectors.
13. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 46, 60, 61, 62, 65, 79, 80, 81 and ignition coil terminal
1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-1421, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace ignition coil with power transistor.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-857, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionNBS005PT
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.Continuity should exist.
Continuity should exist.

EC-1422
[VK45DE]
IGNITION SIGNAL
Revision: 2007 April2007 M35/M45
3. Check resistance between ignition coil terminals as follows.
4. If NG, replace ignition coil with power transistor.
If OK, go to next step.
5. Turn ignition switch OFF.
6. Reconnect all harness connectors disconnected.
7. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pres-
sure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
8. Start engine.
9. After engine stalls, crank it two or three times to release all fuel
pressure.
10. Turn ignition switch OFF.
11. Remove all ignition coil harness connectors to avoid the electri-
cal discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be checked.
13. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm
between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:

Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.

It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, replace ignition coil with power transistor.
CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 and 2 Except 0 or ∞
1 and 3
Except 0
2 and 3
Spark should be generated.
PBIB0847E
PBIB2697E
PBIB2325E

IGNITION SIGNAL
EC-1423
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Revision: 2007 April2007 M35/M45
3. Check resistance between condenser terminals 1 and 2.
Removal and InstallationNBS005PU
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-190, "IGNITION COIL" . Resistance: Above 1 MΩ [at 25°C (77°F)]
PBIB0794E

IDX-5
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IDX
ALPHABETICAL INDEX
EC-890
Heated seat ..................................................... SE-144
Heater and cooling unit (Heater core) ........... ATC-134
HFC134a (R134a) system precaution ............... ATC-6
HFC134a (R134a) system service procedure ATC-150
HFC134a (R134a) system service tools .......... ATC-17
HFC134a system service equipment precaution ..........
ATC-13
High and low reverse clutch solenoid valve .... AT-159,
AT-161
Hood ................................................................... BL-15
Horn ................................................................. WW-54
HORN - Wiring diagram ................................... WW-54
How to erase DTC for OBD system ..... EC-68, EC-770
HSEAT - Wiring diagram ................................. SE-147
I
IATS - Wiring diagram ....................... EC-211
, EC-923
ICC - Wiring diagram ....................................... ACS-23
ICC/BS - Wiring diagram ................. EC-569, EC-1282
ICC/SW - Wiring diagram ................ EC-554, EC-1267
ICCBOF - Wiring diagram ................ EC-684, EC-1404
Idle air volume learning ....................... EC-86, EC-788
Idle speed .............................. EC-78, EC-780, EC-785
Idle speed control (ISC) .... EC-470, EC-472, EC-1177,
EC-1179
Ignition coil ....................................... EC-691, EC-1411
Ignition coil(VK45DE) ...................................... EM-190
Ignition coil(VQ35DE) ........................................ EM-44
Ignition control system ..................... EC-691, EC-1411
Ignition timing ........................ EC-78, EC-780, EC-785
IGNSYS - Wiring diagram ................ EC-692, EC-1412
Illumination ....................................................... LT-293
Illumination control ................. LT-289, LT-290, LT-291
In vehicle sensor ........................... ATC-115, ATC-126
INJECT - Wiring diagram ................. EC-670, EC-1390
Injector ............................................................. EC-669
Input clutch solenoid valve ................. AT-147, AT-149
Instrument panel .................................................. IP-10
Intake air temperature sensor ........... EC-209, EC-229,
EC-922
, EC-942
Intake door control linkage adjustment ............ ATC-87
Intake door motor ........................... ATC-85, ATC-132
Intake manifold collector(VQ35DE) ................... EM-21
Intake manifold(VK45DE) ................................ EM-179
Intake manifold(VQ35DE) .................................. EM-26
Intake sensor ................................ ATC-121, ATC-128
Intake valve timing control (Bank 1) .. EC-166, EC-870
Intake valve timing control (Bank 2) .. EC-166, EC-870
Intake valve timing control position sensor (Bank 1) ....
EC-1203
Intake valve timing control position sensor (Bank 2) ....
EC-1203
Intake valve timing control solenoid valve (Bank 1) ......
EC-185
, EC-899
Intake valve timing control solenoid valve (Bank 2) ......
EC-185
, EC-899
Integrated homelink transmitter ........................ BL-278
Intelligent cruise control (ICC) system .............. ACS-6
Interior ................................................................. EI-37
Interior lamp ...................................................... LT-266
IPDM (Intelligent power distribution module engine
room) ................................................................. PG-18
IVCB1 - Wiring diagram ..................... EC-186, EC-900
IVCB2 - Wiring diagram ..................... EC-188, EC-902
IVCSB1 - Wiring diagram ............................... EC-1204
IVCSB2 - Wiring diagram ............................... EC-1206
IVTB1 - Wiring diagram ................................... EC-873
IVTB2 - Wiring diagram ................................... EC-875
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Knock sensor (KS) ........................... EC-359
, EC-1070
KS - Wiring diagram ......................... EC-360, EC-1071
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LAN system circuit ........................................... ATC-71
Lane Departure Warning System ....................... DI-75
Laser beam aiming adjustment ....................... ACS-15
Latch (lower anchors and tether for children) system ...
SB-35
LDW .................................................................... DI-75
LDW - Wiring Diagram ........................................ DI-86
License lamp ..................................................... LT-248
Line pressure solenoid valve ........................... AT-130
Line pressure test (A/T) ..................................... AT-55
Liquid gasket application .................................... EM-8
Liquid gasket application(VQ35DE) LU-3, LU-23, CO-3
Location of electrical units ................................. PG-98
Low coast brake solenoid valve ......... AT-163, AT-165
Lubricant (R134a) A/C ..................................... ATC-26
Lubrication circuit (engine)(VK45DE) ................ LU-25
Lubrication circuit (engine)(VQ35DE) .................. LU-5
Lubrication oil A/C .......................................... ATC-173
M
MAFS - Wiring diagram ..... EC-196
, EC-204, EC-909,
EC-917
Magnet clutch .................................................. ATC-93
MAIN - Wiring diagram ........ EC-154, EC-858, AT-180
Maintenance (engine)(VQ35DE) ...................... MA-14
Major overhaul (Final drive) .............. FFD-15, RFD-18
Major overhaul (Transfer) .................................. TF-45
Malfunction indicator lamp (MIL) .......... EC-70, EC-772
Manual mode switch ........................................ AT-167
Mass air flow sensor (MAFS) ............ EC-193, EC-202,
EC-906
, EC-915
Meter ..................................................................... DI-5
METER - Wiring diagram .................................... DI-13
MIL data link connectors circuit ....... EC-714, EC-1438
MIL/DL - Wiring diagram .................. EC-714, EC-1438
MIRROR - Wiring diagram ................................ GW-97
Mirror, door ..................................................... GW-118
Mirror, out side ................................................ GW-118
Misfire .............................................. EC-349, EC-1061

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" .

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-249
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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" .

ILLUMINATION
LT-293
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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.

LT-294
ILLUMINATION
Revision: 2007 April2007 M35/M45
ILLUMINATION 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 illumination 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 controls the tail lamp relay coil,
which, when energized, directs power

through IPDM E/R terminal 21

to combination meter terminal 13

to LDW switch (illumination) terminal 5 (with lane departure warning)

to VDC off switch (illumination) terminal 3

to trunk lid opener switch (illumination) terminal 3

to combination switch (spiral cable) terminal 24

to door mirror remote control switch (illumination) terminal 16

to AFS switch (illumination) terminal 5 (with AFS)

to rear sunshade front switch (illumination) terminal 5 (with rear control switch)

to A/T illumination terminal 1

to snow mode switch (illumination) terminal 5 (AWD models)

to rear control cancel switch (illumination) terminal 4 (with rear control switch)

to clock terminal 3

to multifunction switch terminal 3

to audio unit terminal 9

to DVD player terminal 18 (with DVD player)

to NAVI control unit terminal 61 (with navigation system)

to AV control unit terminal 61 (without navigation system)

to climate controlled seat switch driver side (illumination) terminal 7 (with climate controlled seat)

to climate controlled seat switch passenger side (illumination) terminal 7 (with climate controlled seat)

to ashtray illumination (rear LH) terminal 1

to ashtray illumination (rear RH) terminal 1

to illumination control switch terminal 1

to cigarette lighter socket (illumination) terminal 2

to map lamp (illumination) terminal 8

to power window main switch illumination terminal 1

to glove box lamp terminal 1

to rear control switch terminal 2

to rear power seat switch RH (illumination) terminal 4 (with rear control switch)

to rear heated seat switch RH (illumination) terminal 7 (with rear control switch)

to rear sunshade cancel relay terminal 6 (with rear control switch)

to automatic return cancel switch (illumination) terminal 4 (with rear control switch)

to rear power seat switch LH (illumination) terminal 4 (with rear control switch) and

to rear heated seat switch LH (illumination) terminal 7 (with rear control switch),

through Intelligent Key unit terminal 12

to push button ignition switch (illumination) terminal 3.
Ground is supplied

to combination meter terminal 14

to combination meter terminal 9, 10 and 11

to push button ignition switch (illumination) terminal 2

to LDW switch (illumination) terminal 4 (with lane departure warning)

to VDC off switch (illumination) terminal 4

to trunk lid opener switch (illumination) terminal 4

to combination switch (spiral cable) terminal 25