check INFINITI M35 2006 Factory Service Manual

THERMOSTAT AND WATER CONTROL VALVE
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Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of
10 degrees)
Install water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of
10 degrees)
Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION
Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-40, "
LEAK CHECK" .
Start and warm up engine. Visually check if there is no leaks of engine coolant.
PBIC0158E

DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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DRIVER INFORMATION SYSTEM
PRECAUTION ............................................................ 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
PREPARATION ........................................................... 4
Commercial Service Tools ........................................ 4
COMBINATION METERS ........................................... 5
System Description .................................................. 5
UNIFIED METER CONTROL UNIT ...................... 5
UNIFIED METER AND A/C AMP. ......................... 5
POWER SUPPLY AND GROUND CIRCUIT ........ 5
SPEEDOMETER ................................................... 6
TACHOMETER ..................................................... 6
WATER TEMPERATURE GAUGE ........................ 6
FUEL GAUGE ....................................................... 7
ODO/TRIP METER ............................................... 7
METER ILLUMINATION CONTROL ..................... 8
FAIL-SAFE ............................................................ 9
Arrangement of Combination Meter ....................... 10
Component Parts and Harness Connector Location .... 11
Internal Circuit ........................................................ 12
Wiring Diagram — METER — ................................ 13
Terminals and Reference Value for Combination
Meter ...................................................................... 15
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 16
Self-Diagnosis Mode of Combination Meter ........... 17
SELF-DIAGNOSIS FUNCTION .......................... 17
OPERATION PROCEDURE ............................... 17
CONSULT-II Function (METER A/C AMP) ............. 18
Trouble Diagnosis .................................................. 18
HOW TO PERFORM TROUBLE DIAGNOSIS ... 18
PRELIMINARY CHECK ...................................... 18
Symptom Chart ...................................................... 18
Power Supply and Ground Circuit Inspection ........ 19
Vehicle Speed Signal Inspection ............................ 20
Engine Speed Signal Inspection ............................ 21
Engine Coolant Temperature Signal Inspection ..... 22
Fuel Level Sensor Signal Inspection ...................... 22
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or Varies ....................................................... 25
Fuel Gauge Does Not Move to FULL Position ....... 25
Electrical Components Inspection .......................... 26
CHECK FUEL LEVEL SENSOR UNIT ................ 26
Removal and Installation of Combination Meter ..... 27
REMOVAL ........................................................
... 27
INSTALLATION ................................................... 27
Disassembly and Assembly of Combination Meter ... 27
DISASSEMBLY ................................................... 27
ASSEMBLY ......................................................... 27
UNIFIED METER AND A/C AMP ...........................
... 28
System Description ................................................. 28
COMBINATION METER CONTROL FUNCTION ... 28
A/C AUTO AMP. FUNCTION ............................... 29
OTHER FUNCTIONS .......................................... 29
Schematic ............................................................... 30
CONSULT-II Function (METER A/C AMP) ............. 31
CONSULT-II BASIC OPERATION ....................... 31
SELF-DIAG RESULTS ........................................ 32
DATA MONITOR ................................................. 33
Power Supply and Ground Circuit Inspection ......... 35
DTC [U1000] CAN Communication Circuit ............. 36
DTC [B2202] Meter Communication Circuit ........... 36
DTC [B2205] Vehicle Speed Circuit ........................ 39
Removal and Installation of Unified Meter and A/C
Amp. ....................................................................... 39
REMOVAL ........................................................
... 39
INSTALLATION ................................................... 39
WARNING LAMPS .................................................... 40
System Description ................................................. 40
OIL PRESSURE WARNING LAMP ..................... 40
Component Parts and Harness Connector Location ... 41
Schematic ............................................................... 42
Wiring Diagram — WARN — .................................. 43
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) ............................................................. 53
Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ................................................ 54
Electrical Component Inspection ............................ 55
OIL PRESSURE SWITCH ................................... 55

DI-2Revision: 2006 January2006 M35/M45 A/T INDICATOR ........................................................ 56
System Description ................................................. 56
MANUAL MODE .................................................. 56
NOT MANUAL MODE ......................................... 56
Wiring Diagram — AT/IND — ................................. 57
A/T Indicator Is Malfunction .................................... 59
WARNING CHIME .................................................. ... 60
System Description ................................................. 60
POWER SUPPLY AND GROUND CIRCUIT ....... 60
IGNITION KEY WARNING CHIME (WITH INTEL-
LIGENT KEY) ...................................................... 61
LIGHT WARNING CHIME ................................... 61
SEAT BELT WARNING CHIME ........................... 61
Component Parts and Harness Connector Location ... 62
Schematic ............................................................... 63
Wiring Diagram — CHIME — ................................. 64
Terminals and Reference Value for Combination
Meter ...................................................................... 67
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 67
Terminals and Reference Value for BCM ................ 68
CONSULT-II Function (BCM) .................................. 69
CONSULT-II BASIC OPERATION ....................... 69
DATA MONITOR .................................................. 70
ACTIVE TEST ..................................................... 71
SELF-DIAG RESULTS ........................................ 71
CONSULT-II Function (METER A/C AMP) ............. 71
Trouble Diagnosis ................................................... 71
HOW TO PERFORM TROUBLE DIAGNOSIS .... 71
PRELIMINARY INSPECTION ............................. 71
SYMPTOM CHART ............................................. 72
Meter Buzzer Circuit Inspection .............................. 72
Lighting Switch Signal Inspection ........................... 73
Front Door Switch (Driver Side) Signal Inspection ... 73
Seat Belt Buckle Switch Signal Inspection ............. 74
Electrical Component Inspection ............................ 76
FRONT DOOR SWITCH (DRIVER SIDE) ........... 76
SEAT BELT BUCKLE SWITCH (DRIVER SIDE) ... 76
CAN COMMUNICATION ........................................... 77
System Description ................................................. 77
CAN Communication Unit ....................................... 77
LANE DEPARTURE WARNING SYSTEM ................ 78
Precautions for Lane Departure Warning (LDW)
system .................................................................... 78
System Description ................................................. 78
LDW SYSTEM OPERATION ............................... 78
POWER SUPPLY AND GROUND CIRCUIT ....... 80
Action Test ...........................................................
... 80
LDW SYSTEM RUNNING TEST ......................... 80
Camera Aiming Adjustment .................................... 81
OUTLINE ............................................................. 81
PREPARATION ................................................... 81TARGET SETTING .............................................. 81
VEHICLE HEIGHT CHECK ................................. 84
AIMING ADJUSTMENT ....................................... 84
Component Parts and Harness Connector Location ... 88
Wiring Diagram — LDW — ..................................... 89
Terminals and Reference Value for LDW Camera
Unit .......................................................................... 91
CONSULT-II Function (LDW) .................................. 91
DESCRIPTION .................................................... 91
CONSULT-II BASIC OPERATION ....................... 91
WORK SUPPORT ............................................... 92
SELF-DIAG RESULTS ......................................... 92
DATA MONITOR .................................................. 93
ACTIVE TEST ...................................................... 94
Trouble Diagnosis ................................................... 95
HOW TO PERFORM TROUBLE DIAGNOSIS .... 95
PRELIMINARY INSPECTION .............................. 95
SYMPTOM CHART .............................................. 96
Power Supply and Ground Circuit Inspection ......... 96
DTC [C1B00] CAMERA UNIT MALF ...................... 97
DTC [C1B01] CAM AIMING INCMP ....................... 97
DTC [C1B02] VHCL SPD DATA MALF ................... 97
DTC [C1B03] ABNRML TEMP DETECT ................ 97
DTC [U1000] CAN COMM CIRCUIT ...................... 98
DTC [U1010] CONTROL UNIT (CAN) .................... 98
LDW Chime Circuit Inspection ................................ 98
LDW Switch Circuit Inspection ................................ 99
LDW Indicator Lamp Circuit Inspection .................102
Turn Signal Input Inspection .................................103
Electrical Component Inspection ..........................103
LDW SWITCH ....................................................103
Removal and Installation for LDW Camera Unit ...103
REMOVAL ..........................................................103
INSTALLATION ..................................................103
Removal and Installation for LDW Chime .............104
REMOVAL ..........................................................104
INSTALLATION ..................................................104
Removal and Installation for LDW Switch .............104
COMPASS ...............................................................105
System Description ...............................................105
DIRECTION DISPLAY .......................................105
Zone Variation Change Procedure ........................105
Correction Functions of the Compass Display ......105
AUTOMATIC CORRECTION .............................105
MANUAL CORRECTION PROCEDURE ...........105
Wiring Diagram – COMPAS – ...............................106
Removal and Installation of Compass ...................107
CLOCK ....................................................................108
Wiring Diagram — CLOCK — ...............................108
Removal and Installation of Clock .........................109
REMOVAL ..........................................................109
INSTALLATION ..................................................109

COMBINATION METERS
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COMBINATION METERSPFP:24814
System DescriptionNKS003TV
UNIFIED METER CONTROL UNIT
Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the
unified meter control unit, which is built into the combination meter. Unified meter control unit receives sig-
nals from unified meter and A/C amp.
Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.
Digital meter is adopted for odo/trip meter.
NOTE:
The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
Dot matrix LCD is adopted to display “push engine starter”, “A/T position” and “ICC system* ”.
Odo/trip meter and dot matrix LCD segments can be checked in self-diagnosis mode.
Meters/gauges can be checked in self-diagnosis mode.
*: With ICC system
UNIFIED METER AND A/C AMP.
Refer to DI-28, "COMBINATION METER CONTROL FUNCTION" in “UNIFIED METER AND A/C AMP”.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
through 10A fuse [No. 21, located in the fuse block (J/B)]
to combination meter terminal 23,
through 10A fuse [No. 19, located in the fuse block (J/B)]
to unified meter and A/C amp. terminal 54.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 6, located in the fuse block (J/B)],
to combination meter terminal 2, and
to unified meter and A/C amp. terminal 41.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 14, located in the fuse block (J/B)]
to combination meter terminal 12,
through 10A fuse [No. 12, located in the fuse block (J/B)]
to unified meter and A/C amp. terminal 53.
Ground is supplied
to combination meter terminals 9, 10 and 11
to unified meter and A/C amp. terminals 55 and 71
through grounds M16 and M70.

COMBINATION METERS
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FA I L - S A F E
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunc-
tion.
Solution for communication error between the unified meter & A/C amp. and combination meter
Function Specifications
Speedometer
Reset to zero by suspending communication. Tachometer
Fuel gauge
Water temperature gauge
Illumination control Meter illumination When suspending communication, change to nighttime mode.
Dot matrix LCDPush engine starter
The display turns off by suspending communication. A/T position
ICC system
Buzzer The buzzer turns off by suspending communication.
Warning lamp/indicator lampABS warning lamp
The lamp turns on by suspending communication. Brake warning lamp
CRUISE warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
A/T CHECK warning lamp
The lamp turns off by suspending communication. AWD warning lamp
Oil pressure warning lamp
Door warning lamp
Malfunction indicator lamp
CRUISE indicator lamp
SET indicator lamp
Low tire pressure warning lamp
AFS OFF indicator lamp
Front fog indicator lamp
High beam indicator
Turn signal indicator lamp
Key warning lamp

DI-16
COMBINATION METERS
Revision: 2006 January2006 M35/M45
Terminals and Reference Value for Unified Meter and A/C Amp.NKS003U1
Te r m i n a l
No.Wire
colorItemCondition
Reference value
(Approx.) Ignition
switchOperation or condition
7RTX communication line
(To combination meter)ON —
27 GRX communication line
(From combination meter)ON —
28 LGVehicle speed signal output
(8-pulse)ONSpeedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
41 V Ignition switch ACC or ON ACC — Battery voltage
42 P/L Fuel level sensor signal — —Refer to DI-26, "
CHECK FUEL
LEVEL SENSOR UNIT" .
53 W/G Ignition switch ON or START ON — Battery voltage
54 W/G Battery power supply OFF — Battery voltage
55 B Ground ON — 0 V
56 L CAN H — — —
58 B Fuel level sensor ground ON — 0 V
71 B Ground (power) ON — 0 V
72 P CAN L — — —
SKIA3362E
SKIA3361E
PKIA1935E

COMBINATION METERS
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Self-Diagnosis Mode of Combination MeterNKS003U2
SELF-DIAGNOSIS FUNCTION
Odo/trip meter segment and dot matrix LCD segment operation can be checked in self-diagnosis mode.
Meters/gauges can be checked in self-diagnosis mode.
OPERATION PROCEDURE
1. Turn ignition switch ON, and switch the odo/trip meter to “trip A” or “trip B”.
NOTE:
If the diagnosis function is activated with “trip A” displayed, the mileage on “trip A” is reset to “0000.0”.
(The same way for “trip B”.)
2. Turn ignition switch OFF.
3. While pressing the odo/trip meter switch (1), turn ignition switch
ON again.
4. Make sure that the trip meter displays “0000.0”.
5. Press the odo/trip meter switch (1) at least 3 times. (Within 7
seconds after the ignition switch is turned ON.)
6. The unified meter control unit is turned to self-diagnosis mode.
Dot in all segments of dot matrix LCD (1) flashes alternately.
All the segments on the odo/trip meter (2) illuminates.
Water temperature gauge and fuel gauge return to zero, and at the same time, low-fuel warning indica-
tor turns ON.
NOTE:
Check combination meter power supply and ground circuit when self-diagnosis mode of combination
meter does not start. Replace combination meter if normal.
If any of the segments is not displayed, replace combination meter.
7. Each meter activates during pressing odo/trip meter switch.
(Then low-fuel warning lamp turns OFF.)
NOTE:
If any of the meter and gages is not activated, replace combina-
tion meter.
PKIB7633E
SKIB2939J
PKIB7636E

DI-18
COMBINATION METERS
Revision: 2006 January2006 M35/M45
CONSULT-II Function (METER A/C AMP)NKS003U3
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
Trouble DiagnosisNKS003U4
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-18, "
PRELIMINARY CHECK" .
3. According to the symptom chart, make sure the cause of the symptom and repair or replace applicable
parts. Refer to DI-18, "
Symptom Chart" .
4. Does the meter operate normally? If yes, GO TO 5. If no, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK
1. CHECK OPERATION SELF-DIAGNOSIS MODE OF COMBINATION METER
Perform self-diagnosis mode of combination meter. Refer to DI-17, "
OPERATION PROCEDURE" .
Does self
-diagnosis mode operate?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-31, "
CONSULT-II Function (METER A/C
AMP)" .
Self
-diagnostic results content
No malfunction detected>>INSPECTION END
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check power supply and ground circuit of combination meter. Refer to DI-19, "
Power Supply and Ground Cir-
cuit Inspection" .
OK or NG
OK >> Replace combination meter.
NG >> Repair power supply and ground circuit of combination meter.
Symptom ChartNKS003U5
Symptom Diagnosis/Service procedure
Speedometer or odo/trip meter indication is malfunction. Refer to DI-20, "
Vehicle Speed Signal Inspection" .
Tachometer indication is malfunction. Refer to DI-21, "
Engine Speed Signal Inspection" .
Water temperature gauge indication is malfunction. Refer to DI-22, "
Engine Coolant Temperature Signal Inspection" .
Fuel gauge indication is malfunction.
Refer to DI-22, "
Fuel Level Sensor Signal Inspection" .
Low-fuel warning lamp indication is irregular.
A/T position indicator is malfunction. Refer to DI-59, "
A/T Indicator Is Malfunction" .

COMBINATION METERS
DI-19
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Power Supply and Ground Circuit InspectionNKS003U6
1. CHECK FUSE
Check for blown fuses.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
POWER
SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between combination meter and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Power source Fuse No.
Battery 21
Ignition switch ACC or ON 6
Ignition switch ON or START 14
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Combination meter
connectorTerminal
M5223
GroundBattery
voltageBattery
voltageBattery
voltage
20 VBattery
voltageBattery
voltage
12 0 V 0 VBattery
voltage
PKIB7637E
Combination meter
connectorTerminal
GroundContinuity
M529
Ye s 10
11
PKIB7638E

DI-20
COMBINATION METERS
Revision: 2006 January2006 M35/M45
Vehicle Speed Signal InspectionNKS003U7
Symptom: Speedometer or odo/trip meter indication is malfunction.
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Compare the value in “SPEED METER” of “DATA MONITOR” in
“METER A/C AMP” to that in speedometer in the combination
meter during driving.
Is the value in speedometer almost same as that in the monitor?
YES >> Preform self-diagnosis of ABS actuator and electric unit
(control unit). Refer to BRC-22, "
CONSULT-II Functions
(ABS)" .
NO >> GO TO 2.
2. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start engine and drive vehicle at approximately 40 km/h (25
MPH).
2. Check voltage signal between unified meter and A/C amp. har-
ness connector and ground.
NOTE:
Maximum voltage may be 5 V due to specifications (connected units).
OK or NG
OK >> GO TO 3.
NG-1 >> If monitor indicates “0 V” constantly, perform the following.
1. Check each unit inputting vehicle speed signal (8 pulse). Malfunction is caused by short circuit
between each unit and unified meter and A/C amp.
2. Repair or replace malfunctioning parts.
NG-2 >> If monitor indicates “5 V” or “12 V” constantly, replace unified meter and A/C amp.
PKIB7639E
Terminals
Voltage (Approx.) (+)
(–)
Unified meter and
A/C amp.connectorTerminal
M64 28 Ground
PKIB7640E
PKIA1935E