ground INFINITI M35 2006 Factory Service Manual

LT-4Revision: 2006 January2006 M35/M45 HAZARD SWITCH ..................................................231
Removal and Installation ......................................231
REMOVAL ........................................................
.231
COMBINATION SWITCH ........................................232
Wiring Diagram — COMBSW — ..........................232
Combination Switch Reading Function .................233
Terminals and Reference Values for BCM ............233
CONSULT-II Functions (BCM) ..............................238
CONSULT-II BASIC OPERATION .....................238
DATA MONITOR ................................................239
Combination Switch Inspection ............................240
Removal and Installation ......................................242
STOP LAMP ............................................................243
Wiring Diagram — STOP LAMP — ......................243
High-Mounted Stop Lamp .....................................245
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ..................................................245
Stop Lamp ............................................................245
BULB REPLACEMENT .....................................245
BULB REPLACEMENT .....................................245
BACK-UP LAMP .....................................................246
Wiring Diagram — B/LAMP — .............................246
Bulb Replacement ...............................................
.247
Removal and Installation ......................................248
REMOVAL ........................................................
.248
INSTALLATION ..................................................248
PARKING, LICENSE PLATE AND TAIL LAMPS ....249
Component Parts and Harness Connector Location .249
System Description ...............................................249
OUTLINE ...........................................................249
OPERATION BY LIGHTING SWITCH ...............250
COMBINATION SWITCH READING FUNCTION .250
EXTERIOR LAMP BATTERY SAVER CONTROL .250
CAN Communication System Description ............250
CAN Communication Unit .....................................250
Schematic .............................................................251
Wiring Diagram — TAIL/L — ................................252
Terminals and Reference Values for BCM ............257
Terminals and Reference Values for IPDM E/R ....258
How to Perform Trouble Diagnoses ......................258
Preliminary Check ................................................258
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ..................................................................258
CONSULT-II Functions (BCM) ..............................259
CONSULT-II Functions (IPDM E/R) ......................259
Parking, License Plate and Tail Lamps Do Not Illu-
minate ...................................................................260
Parking, License Plate and Tail Lamps Do Not Turn
OFF (After Approx. 10 Minutes) ...........................264
License Plate Lamp ..............................................265
BULB REPLACEMENT .....................................265
Removal and Installation ......................................265
REMOVAL ........................................................
.265
INSTALLATION ..................................................265
Front Parking (Clearance) Lamp ..........................265
BULB REPLACEMENT .....................................265
REMOVAL AND INSTALLATION .......................265
REAR COMBINATION LAMP .................................266
Bulb Replacement ...............................................
.266REAR TURN SIGNAL LAMP BULB, STOP/TAIL
LAMP BULB ...................................................... .266
Removal and Installation .......................................266
REMOVAL ..........................................................266
INSTALLATION ..................................................266
INTERIOR ROOM LAMP ........................................267
Component Parts and Harness Connector Location .267
System Description ...............................................267
ROOM LAMP TIMER BASIC OPERATION .......267
POWER SUPPLY AND GROUND .....................268
SWITCH OPERATION .......................................269
ROOM LAMP TIMER OPERATION ...................270
CONDITIONS FOR CANCELING TIMER ..........271
ROOM LAMP TIMER INAPPLICABLE LAMPS
OPERATION ......................................................271
INTERIOR ROOM LAMP BATTERY SAVER
FUNCTION .......................................................
.271
Schematic .............................................................272
Wiring Diagram — ROOM/L — .............................274
Terminals and Reference Values for BCM ............281
How to Perform Trouble Diagnoses ......................282
Preliminary Check .................................................283
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ...................................................................283
CONSULT-II Functions (BCM) ..............................284
CONSULT-II BASIC OPERATION .....................284
WORK SUPPORT (INT LAMP) .........................285
DATA MONITOR (INT LAMP) ............................286
ACTIVE TEST (INT LAMP) ................................287
WORK SUPPORT (BATTERY SAVER) .............287
DATA MONITOR (BATTERY SAVER) ...............287
ACTIVE TEST (BATTERY SAVER) ...................288
Interior Room Lamp Control Does Not Operate ....289
Map Lamp .............................................................291
BULB REPLACEMENT ......................................291
REMOVAL AND INSTALLATION .......................291
Personal Lamp ......................................................291
BULB REPLACEMENT ......................................291
REMOVAL AND INSTALLATION .......................291
Foot Lamp (Driver Side) .......................................
.292
BULB REPLACEMENT ......................................292
REMOVAL AND INSTALLATION .......................292
Foot Lamp (Passenger Side) ................................293
BULB REPLACEMENT ......................................293
REMOVAL AND INSTALLATION .......................293
Vanity Mirror Lamp ................................................293
BULB REPLACEMENT ......................................293
Step Lamp .............................................................294
BULB REPLACEMENT ......................................294
REMOVAL AND INSTALLATION .......................294
Kicking Plate Illumination .....................................
.294
BULB REPLACEMENT ......................................294
REMOVAL AND INSTALLATION .......................294
Trunk Room Lamp (Upper/Lower) ........................294
BULB REPLACEMENT ......................................294
REMOVAL AND INSTALLATION .......................294
ILLUMINATION ........................................................295
System Description ...............................................295
OUTLINE ...........................................................295

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-9
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OUTLINE
Power is supplied at all times
to headlamp high relay, located in IPDM E/R and
to headlamp low relay, located in IPDM E/R, from battery direct,
through 15A fuse (No. 71, located in IPDM E/R)
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 and fusible link 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.
When the ignition switch is 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.
When the ignition switch is 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-10
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2006 January2006 M35/M45
HEADLAMP OPERATION
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps 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 headlamp low relay coil, which when energized, directs power
through 15A fuse (No. 76, located in IPDM E/R)
through IPDM E/R terminal 20
to front combination lamp RH terminal 8,
through 15A fuse (No. 86, located in IPDM E/R)
through IPDM E/R terminal 30
to front combination lamp LH terminal 8.
Ground is supplied
to front combination lamp RH terminal 4
to front combination lamp LH terminal 4
through grounds E22 and E43.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal
requesting the headlamp high beams and low beams 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 headlamp
high relay coil and low relay coil, which when energized, directs power
through 15A fuse (No. 76, located in IPDM E/R)
through IPDM E/R terminal 20
to front combination lamp RH terminal 8,
through 15A fuse (No. 86, located in IPDM E/R)
through IPDM E/R terminal 30
to front combination lamp LH terminal 8,
through 10A fuse (No. 72, located in IPDM E/R)
through IPDM E/R terminal 27
to front combination lamp RH terminal 6,
through 10A fuse (No. 74, located in IPDM E/R)
through IPDM E/R terminal 28
to front combination lamp LH terminal 6.
Ground is supplied
to front combination lamp RH terminal 4
to front combination lamp LH terminal 4
to front combination lamp RH terminal 2
to front combination lamp LH terminal 2
through grounds E22 and E43.
With power and ground supplied, the high beam and low beam headlamps illuminate.
The unified meter and A/C amp. that received the high beam request signal by BCM across the CAN commu-
nication makes a high beam indicator lamp turn on in the combination meter.

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-19
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34 LCombination
switch output 3ONLighting, turn, wiper
switch
(Wiper dial position 4)
Any of several con-
ditions below
Lighting switch 2ND
Lighting switch HI
beam
(Operates only HI
beam switch)
Approx. 1.2V
OFF
Approx. 7.0 - 7.5V
35 SBCombination
switch output 2ONLighting, turn, wiper
switch
(Wiper dial position 4)
Any of several con-
ditions below
Lighting switch 2ND
Lighting switch
PASSING (Operates
only PASSING switch)
Approx. 1.2V
OFF
Approx. 7.0 - 7.5V
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. 0V
55 WBattery power
supplyOFF — Battery voltage Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4958J
PKIB4960J
PKIB4958J
PKIB4960J

LT-20
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2006 January2006 M35/M45
Terminals and Reference Values for IPDM E/RNKS003O5
How to Perform Trouble DiagnosesNKS003O6
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 8 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 2 0 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS003O7
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown fuses.
Refer to LT-13, "Wiring Diagram — H/LAMP —" .
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
20 R Headlamp low (RH) ONLighting switch 2ND
positionOFF Approx. 0V
ON Battery voltage
27 BR Headlamp high (RH) ONLighting switch HIGH or
PASSING positionOFF Approx. 0V
ON Battery voltage
28 R/Y Headlamp high (LH) ONLighting switch HIGH or
PASSING positionOFF Approx. 0V
ON Battery voltage
30 R/B Headlamp low (LH) ONLighting switch 2ND
positionOFF Approx. 0V
ON Battery voltage
38 B Ground ON — Approx. 0V
49 L CAN
H — — —
50 P CAN
L — — —
51 B Ground ON — Approx. 0V
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
72
74
76
78
86

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-21
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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.
Terminal Ignition switch position
(+)
(
)OFFACCON
BCM
connectorTerminal
M111
GroundApprox. 0VBattery
voltageBattery
voltage
38 Approx. 0V Approx. 0VBattery
voltage
M242Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

LT-22
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2006 January2006 M35/M45
CONSULT-II Functions (BCM)NKS003O8
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
NOTE:
Cannot change the setting for headlamp.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, and then turn
ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, check power supply and ground of
BCM. If it is normal, refer to GI-40, "
CONSULT-II Data Link Con-
nector (DLC) Circuit" .
BCM diagnosis part Diagnosis mode Description
HEADLAMPWORK SUPPORT
Changes the setting for each function.
NOTE
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive 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.
SKIB3794E
BCIA0029E
BCIA0030E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-25
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CONSULT-II Functions (IPDM E/R)NKS003O9
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, and then turn
the ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “IPDM E/R” on “SELECT SYSTEM” screen.
If “IPDM E/R” is not indicated, check power supply and ground
of IPDM E/R. If it is normal, refer to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
Diagnosis Mode Description
SELF-DIAGNOSTIC RESULTS Refer to PG-21, "
SELF-DIAG RESULTS" .
DATA MONITOR The input/output data of IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST IPDM E/R sends a drive signal to electronic components to check their operation.
SKIB3794E
BCIA0029E
BCIA0030E

LT-28
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2006 January2006 M35/M45
4. CHECK HEADLAMP INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination 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 “HI” screen.
6. When headlamp high beam is operating, check voltage between
front combination lamp (RH and LH) harness connector and
ground. (Headlamp high beam repeats ON-OFF every 1 sec-
ond.)
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Start auto active test. Refer to PG-24, "
Auto Active Test" .
4. When headlamp high beam is operating, check voltage between front combination lamp (RH and LH) har-
ness connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 7.
5. CHECK HEADLAMP GROUND
1. Turn ignition switch OFF.
2. Check continuity between front headlamp (RH and LH) harness
connector and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
Terminal
Voltage (+)
(-)
Front combination lamp
connectorTerminal
RH E47 6
Ground Battery voltage
LH E54 6
Terminal
Voltage (+)
(-)
Front combination lamp
connectorTerminal
RH E47 6
Ground Battery voltage
LH E54 6
SKIB4749E
Front combination lamp
connectorTerminal
GroundContinuity
RH E47 2
Ye s
LH E54 2
SKIB4750E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-29
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6. CHECK BULB
Check bulbs of lamp (both side).
OK or NG
OK >> Check connecting condition headlamp harness connector.
NG >> Replace headlamp bulb.
7. CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT COMBINATION LAMP
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front combination lamp (RH and LH) harness connector (B).
4. Check harness 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
E727 E47 6
Ye s
LH 28 E54 6
A
GroundContinuity
Connector Terminal
RH
E727
No
LH 28
SKIB4753E