2007 INFINITI M35 light

COMBINATION SWITCH
LT-241
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Revision: 2007 April2007 M35/M45
4. CHECK BCM OUTPUT TERMINAL
1. Connect BCM and combination switch connectors.
2. Turn ignition switch ON.
3. Turn lighting switch and wiper switch into OFF.
4. Set wiper dial position 4.
5. Check BCM output terminal voltage waveform of suspect mal-
functioning system.
OK or NG
OK >> Open circuit in combination switch, GO TO 5.
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installation of BCM" .
5. CHECK COMBINATION SWITCH
Referring to table below, perform combination switch inspection.
>> INSPECTION END
Removal and InstallationNKS003SA
Refer to LT- 2 3 0 , "LIGHTING AND TURN SIGNAL SWITCH" .
Suspect
systemTerminal
Reference value (+)
(-) Combina-
tion switch
connectorTerminal
1
M291
Ground
Approx. 7.0 - 7.5 V 22
33
44
55
SKIB4820E
PKIB4960J
Procedure
12 34567
Replace
lighting
switchConfirm
check
resultsOK INSPECTION END
Confirm
check
resultsOK INSPECTION END
Confirm
check
resultsOK INSPECTION END
NGReplace wiper
switchNGReplace switch
baseNGCheck symptom
again

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
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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" .

LT-256
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003SN
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)Lighting switch 1ST
Approx. 1.0 V
OFF Approx. 0 V
11 VIgnition switch
(ACC)ACC — Battery voltage
33 GRCombination
switch output 4ONLighting, turn, wiper
switch
(Wiper dial position 4)Lighting switch 1ST
(The same result with
lighting switch 2ND)
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
52 B Ground ON — Approx. 0 V
55 WBattery power
supplyOFF — Battery voltage
PKIB4957J
PKIB4958J
PKIB4960J

PARKING, LICENSE PLATE AND TAIL LAMPS
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Revision: 2007 April2007 M35/M45
Terminals and Reference Values for IPDM E/RNKS003SO
How to Perform Trouble DiagnosesNKS003SP
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 2 4 8 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 2 5 7 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do the parking, license plate and tail lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS003SQ
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to LT-251, "Wiring Diagram — TAIL/L —" .
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" .
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
21 R/LParking, license plate, and
tail lamp outputONLighting switch
1STOFF Approx. 0 V
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
78

PARKING, LICENSE PLATE AND TAIL LAMPS
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Revision: 2007 April2007 M35/M45
Parking, License Plate and Tail Lamps Do Not IlluminateNKS003ST
1. CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-II
1. Select “BCM” on CONSULT-II. Select “HEAD LAMP” on
“SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure “TAIL LAMP SW” turns ON-OFF linked with operation
of lighting switch.
Without CONSULT-II
Refer toLT- 2 3 9 , "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check combination switch (lighting switch). Refer to LT- 2 3 9 , "
Combination Switch Inspection" .
2. ACTIVE TEST
With CONSULT-II
1. Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on
“SELECT DIAG MODE” screen.
2. Select “TAIL LAMP” on “SELECT TEST ITEM” screen.
3. Touch “ON” screen.
4. Make sure parking, license plate and tail lamp operation.
Without CONSULT-II
1. Start auto active test. Refer to PG-23, "
Auto Active Test" .
2. Make sure parking, license plate and tail lamp operation.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK IPDM E/R
1. Select “IPDM E/R” on CONSULT-II. Select “DATA MONITOR”
on “SELECT DIAG MODE” screen.
2. Make sure “TAIL & CLR REQ” turns ON when lighting switch is
in 1ST position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and
Installation of IPDM E/R" .
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" . When lighting switch is 1ST
position: TAIL LAMP SW ON
SKIB4822E
Parking, license plate and tail lamps should operate.
Parking, license plate and tail lamps should operate.
PKIA6359E
When lighting switch is 1ST
position: TAIL & CLR REQ ON
SKIA5958E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-263
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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

INTERIOR ROOM LAMP
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Revision: 2007 April2007 M35/M45
CONSULT-II Functions (BCM)NKS003T7
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
WORK SUPPORT (INT LAMP)
Operation Procedure
1. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
2. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
3. Touch “SET I/L D− UNLCK INTCON” on “SELECT WORK ITEM” screen.
4. Touch “START”.
5. Touch “CHANGE SETT”.
6. The setting will be changed and “CUSTOMIZING COMPLETED ” will be displayed.
7. Touch “END”.
Display Item List
NOTE:
Factory settingBCM diagnosis part Diagnosis mode Description
INTERIOR LAMPWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending driving signal to them.
BATTERY SAVERWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending driving signal to them.
BCMSELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
Item Description CONSULT-II
ROOM LAMP TIMER SETThe lighting time can be selected when the interior room lamps are unlocked by
Intelligent Key or any door request switch.

Mode 1 (0 sec.)/Mode 2 (7.5 sec.)/Mode 3NOTE (15 sec.)/Mode 4 (30 sec.)MODE 1 – 4
SET I/L D−UNLCK INTCONRoom lamp timer operation can be selected.

ONNOTE (Room lamp timer operates)/OFF (Room lamp timer does not oper-
ates)ON/OFF
ROOM LAMP ON TIME SETThe time to escalate illumination can be selected when the interior room lamp is
turned on.

Mode 1 (0.5 sec.)/Mode 2NOTE (1 sec.)/Mode 3 (2 sec.)/Mode 4 (3 sec.)/
Mode 5 (4 sec.)/Mode 6 (5 sec.)/Mode 7 (0 sec.)MODE 1 – 7
ROOM LAMP OFF TIME SETThe time to diminish illumination can be selected when the interior room lamp is
turned off.

Mode 1 (0.5 sec.)/Mode 2 (1 sec.)/Mode 3 (2 sec.)/Mode 4NOTE (3 sec.)/
Mode 5 (4 sec.)/Mode 6 (5 sec.)/Mode 7 (0 sec.)MODE 1 – 7
R LAMP TIMER LOGIC SETThe lighting condition of room lamp timer can be selected when the door is
opened/closed.

Mode 1NOTE (Connected with all doors)/Mode 2 (Connected with driver door
only)MODE 1 – 2
ROOM LAMP ON AT LOCKThe connected operation with room lamp timer can be selected when engine
switch (push switch) is turned OFF.

ON NOTE (Connected with room lamp timer operation) /OFF (Disconnected with
room lamp operation)ON/OFF