2007 NISSAN 350Z belt

DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION DI
A
B
DI
Revision: 2006 November2007 350Z
DRIVER INFORMATION SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Battery Service ................................ 3
COMBINATION METERS ........................................... 4
System Description .................................................. 4
UNIFIED METER CONTROL UNIT ...................... 4
UNIFIED METER AND A/C AMP. ......................... 4
POWER SUPPLY AND GROUND CIRCUIT ........ 4
SPEEDOMETER ................................................... 4
TACHOMETER ..................................................... 5
WATER TEMPERATURE GAUGE ........................ 5
FUEL GAUGE ....................................................... 5
ODO/TRIP METER ............................................... 5
ILLUMINATION CONTROL ................................... 6
SHIFT-UP INDICATOR ......................................... 7
FAIL-SAFE ............................................................ 7
Component Parts and Harness Connector Location ..... 8
Arrangement of Combination Meter ......................... 9
Schematic .............................................................. 10
Wiring Diagram — METER — ................................. 11
Terminals and Reference Value for Combination
Meter ...................................................................... 13
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 14
Self-Diagnosis Mode of Combination Meter ........... 15
SELF-DIAGNOSIS FUNCTION .......................... 15
OPERATION PROCEDURE ............................... 15
CONSULT-III Function (METER A/C AMP) ............ 15
Trouble Diagnosis .................................................. 16
HOW TO PERFORM TROUBLE DIAGNOSIS ... 16
PRELIMINARY CHECK ...................................... 16
Symptom Chart ...................................................... 16
Power Supply and Ground Circuit Inspection ........ 17
Vehicle Speed Signal Inspection ............................ 18
Engine Speed Signal Inspection ............................ 19
Engine Coolant Temperature Signal Inspection ..... 19
Fuel Level Sensor Signal Inspection ...................... 19
Illumination Control Switch Inspection ................... 21Fuel Gauge Pointer Fluctuates, Indicator Wrong
Value or Varies ....................................................... 22
Fuel Gauge Does Not Move to FULL Position ....... 22
Electrical Components Inspection .......................... 23
FUEL LEVEL SENSOR UNIT ............................. 23
Removal and Installation for Combination Meter .... 24
REMOVAL ........................................................... 24
INSTALLATION ................................................... 24
Disassembly and Assembly for Combination Meter ... 24
DISASSEMBLY ................................................... 24
ASSEMBLY ......................................................... 25
TRIPLE METERS ...................................................... 26
System Description ................................................. 26
TRIPLE METER .................................................. 26
UNIFIED METER AND A/C AMP. ........................ 26
POWER SUPPLY AND GROUND CIRCUIT ....... 26
VOLTMETER ....................................................... 26
OIL PRESSURE GAUGE .................................... 26
TRIP COMPUTER ............................................... 27
FAIL-SAFE .......................................................... 29
Schematic ............................................................... 30
Wiring Diagram — 3METER — .............................. 31
Terminals and Reference Value for Triple Meter .... 35
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 36
Terminals and Reference Value for Combination
Meter ...................................................................... 37
Self-Diagnosis Mode of Triple Meter ...................... 38
SELF-DIAGNOSIS FUNCTION ........................... 38
OPERATION PROCEDURE ................................ 38
CONSULT-III Function (METER A/C AMP) ............ 38
Trouble Diagnosis ................................................... 39
HOW TO PERFORM TROUBLE DIAGNOSIS .... 39
PRELIMINARY CHECK ....................................... 39
Symptom Chart ....................................................... 39
Vehicle Speed Signal Inspection ............................ 40
Fuel Consumption Monitor Signal Inspection ......... 40
Oil Pressure Sensor Signal Inspection ................... 40
Trip Computer Switch Inspection ............................ 42
Removal and Installation of Triple Meters .............. 42

DI-2Revision: 2006 November2007 350Z REMOVAL ........................................................... 42
INSTALLATION .................................................... 42
Disassembly and Assembly for Triple Meters ......... 43
DISASSEMBLY ................................................... 43
ASSEMBLY ......................................................... 43
UNIFIED METER AND A/C AMP .............................. 44
System Description ................................................. 44
DESCRIPTION .................................................... 44
COMBINATION METER CONTROL FUNCTION ... 44
TRIPLE METER CONTROL FUNCTION ............ 45
A/C AUTO AMP. FUNCTION ............................... 45
OTHER FUNCTIONS .......................................... 45
Schematic ............................................................... 46
CONSULT-III Function (METER A/C AMP) ............ 47
SELF-DIAGNOSTIC RESULTS ........................... 47
DATA MONITOR .................................................. 47
Power Supply and Ground Circuit Inspection ......... 49
DTC [U1000] CAN Communication Circuit ............. 50
DTC [B2201] Triple Meter Communication Circuit ... 50
DTC [B2202] Meter Communication Circuit ............ 52
DTC [B2205] Vehicle Speed Circuit ........................ 55
Removal and Installation of Unified Meter and A/C
Amp. ....................................................................... 55
REMOVAL ........................................................... 55
INSTALLATION .................................................... 55
WARNING LAMPS .................................................... 56
System Description ................................................. 56
OIL PRESSURE WARNING LAMP ..................... 56
Schematic ............................................................... 57
Wiring Diagram — WARN — .................................. 58
CONSULT-III Function (METER A/C AMP) ............ 66
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) or Stays On (Oil Pressure Is Normal) ... 66
A/T INDICATOR ........................................................ 67
System Description ................................................. 67
MANUAL MODE .................................................. 67
NOT MANUAL MODE ......................................... 67
Wiring Diagram — AT/IND — ................................. 68CONSULT-III Function (METER A/C AMP) ............ 70
A/T Indicator Is Malfunction .................................... 70
WARNING CHIME ..................................................... 71
System Description ................................................. 71
IGNITION KEY WARNING CHIME ...................... 71
LIGHT WARNING CHIME ................................... 71
SEAT BELT WARNING CHIME ........................... 72
Component Parts and Harness Connector Location ... 72
Schematic ............................................................... 73
Wiring Diagram — CHIME — ................................. 74
Terminals and Reference Value for BCM ................ 77
Terminals and Reference Value for Unified Meter
and A/C Amp. .......................................................... 81
Terminals and Reference Value for Combination
Meter ....................................................................... 81
CONSULT-III Function (METER A/C AMP) ............ 83
CONSULT-III Function (BCM) ................................. 83
DIAGNOSTIC ITEMS DESCRIPTION ................. 83
DATA MONITOR .................................................. 83
ACTIVE TEST ...................................................... 83
SELF-DIAGNOSTIC RESULTS ........................... 83
Trouble Diagnosis ................................................... 83
HOW TO PERFORM TROUBLE DIAGNOSIS .... 83
PRELIMINARY INSPECTION .............................. 84
Symptom Chart ....................................................... 84
Power Supply and Ground Circuit Inspection ......... 84
Meter Buzzer Circuit Inspection .............................. 85
Driver Side Door Switch Signal Inspection ............. 86
Key Switch Signal Inspection .................................. 87
Lighting Switch Signal Inspection ........................... 88
Seat Belt Buckle Switch (Driver Side) Signal Inspec-
tion .......................................................................... 88
Component Inspection ............................................ 90
DRIVER SIDE DOOR SWITCH ........................... 90
SEAT BELT BUCKLE SWITCH (DRIVER SIDE) ... 90
KEY SWITCH ....................................................... 90
CAN COMMUNICATION ........................................... 91
System Description ................................................. 91
CAN Communication Unit ....................................

PRECAUTIONS
DI-3
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
PRECAUTIONS PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS0005P
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Battery ServiceNKS0005Q
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

DI-44
UNIFIED METER AND A/C AMP
Revision: 2006 November2007 350Z
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS0006X
DESCRIPTION

For the unified meter and A/C amp., the signal required for con-
trolling the combination meter and triple meter are integrated in
the A/C auto amp.

Unified meter and A/C amp. corresponds a CONSULT-III func-
tion (self-diagnosis results, CAN diagnosis support monitor and
data monitor).
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. receives necessary information for combination meter from each unit.

Unified meter and A/C amp. converses with the combination meter transmits a signal through with com-
munication line (TX, RX) between unified meter and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-7,
"FAIL-SAFE" .
SKIB0018E
Unit Input Output
Unified meter and A/C amp.

Seat belt buckle switch signal (Driver's side)

Trip computer mode switch signal

Trip computer setting switch signal

Illumination control nighttime required signal

Refuel status signal

Vehicle speed signal

Low-fuel warning lamp condition signal

Self-diagnosis condition signal

Odo/trip switch signal

Delivery destination data signal

Combination meter receive error signal

Combination meter specifications signal

Triple meter specifications signal

Engine speed signal

Engine coolant temperature signal

Fuel level sensor signal (resistance value)

Malfunction indicator lamp signal

ABS warning lamp signal

Tire pressure warning lamp signal

Brake warning lamp signal

Oil pressure warning lamp signal

Turn indicator signal

High beam request signal

VDC OFF indicator lamp signal

TCS OFF indicator lamp signal

SLIP indicator lamp signal

CRUISE indicator lamp signal

SET indicator lamp signal

A/T CHECK indicator lamp signal

A/T position indicator signal

Manual mode indicator signal

Manual mode gear position signal

Shift-up indicator setting signal

CAN communication condition signal of A/T

Door switch signal

Position lights request signal

Buzzer output signal

DI-48
UNIFIED METER AND A/C AMP
Revision: 2006 November2007 350Z
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
*1: It dose not change when fastening or unfastening the passenger seat belt.
*2: Monitor keeps indicating “OFF” when brake warning lamp is on by the parking brake operation or low brake fluid level. AIR PRES W/L [ON/OFF] XIndicates [ON/OFF] condition of low tire pressure warning
lamp.
SEAT BELT W/L
*1[ON/OFF] X Indicates [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Indicates [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Indicates [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Indicates [ON/OFF] condition of turn indicator.
OIL W/L [ON/OFF] X Indicates [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] XIndicates [ON/OFF] condition of VDC/TCS OFF indicator
lamp.
ABS W/L [ON/OFF] X Indicates [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Indicates [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L
*2[ON/OFF] X Indicates [ON/OFF] condition of brake warning lamp.
M RANGE SW [ON/OFF] X XIndicates [ON/OFF] condition of manual mode range
switch.
NM RANGE SW [ON/OFF] X XIndicates [ON/OFF] condition of except for manual mode
range switch.
AT SFT UP SW [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift up switch.
AT SFT DWN SW [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift down switch.
AT P MODE SW [ON/OFF] X Indicates [ON/OFF] condition of A/T power mode switch.
AT S MODE SW [ON/OFF] X Indicates [ON/OFF] condition of A/T snow mode switch.
BRAKE SW [ON/OFF] XIndicates [ON/OFF] condition of brake switch (stop lamp
switch).
AT-M IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T manual mode indica-
tor.
AT-M GEAR [5/4/3/2/1] X XIndicates [5/4/3/2/1] condition of A/T manual mode gear
position.
P RANGE IND ON/OFF X X Indicates [ON/OFF] condition of A/T shift P range indicator.
R RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T shift R range indica-
tor.
N RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T shift N range indica-
tor.
D RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T shift D range indica-
tor.
AT CHECK W/L [ON/OFF] XIndicates [ON/OFF] condition of A/T CHECK warning
lamp.
CRUISE IND [ON/OFF] X Indicates [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Indicates [ON/OFF] condition of SET indicator.Monitor item [Unit] MAIN SIGNALSSELECTION
FROM MENUContents

DI-72
WARNING CHIME
Revision: 2006 November2007 350Z
SEAT BELT WARNING CHIME
With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime sounds for approxi-
mately 6 seconds.

Combination meter reads a ON/OFF signal from seat belt buckle switch, and transmits seat belt buckle
switch signal to unified meter and A/C amp. with communication line.

BCM receives seat belt buckle switch signal (driver side) from unified meter and A/C amp. with CAN com-
munication line.

BCM detects ignition switch turned ON and seat belt buckle switch (driver side) ON. And then, BCM trans-
mits buzzer output signal (seat belt warning chime) to unified meter and A/C amp. with CAN communica-
tion.

Unified meter and A/C amp. transmits buzzer output signal (seat belt warning chime) to combination
meter with communication line.

When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.
Component Parts and Harness Connector LocationNKS0007F
PKIC4373E
SKIA9666E

WARNING CHIME
DI-81
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
Terminals and Reference Value for Unified Meter and A/C Amp. NKS0007L
Terminals and Reference Value for Combination MeterNKS0007M
37 B/RKey switch
signalOFFKey is removed. 0 V
Key is inserted. 12 V
38 W/LIgnition
power supplyON — Battery voltage
39 L CAN-H — — —
40 P CAN-L — — —
42 GYBattery
power sup-
ply (FUSE)OFF — Battery voltage
52 B Ground ON — 0 V
55 RBattery
power sup-
ply (F/L)OFF — Battery voltage
62 LDriver side
door switch
signalOFFDoor switch is released. (Door switch ON) 0 V
Door switch is pressed. (Door switch OFF) 5 V Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Igni-
tion
switchOperation or condition
Terminal
No.Wire
colorItemMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
1 L CAN-H OFF — —
9L/ORTX communication line
(To combination meter)ON —
11 P C A N - L O F F — —
19 R/GRX communication line
(From combination meter)ON —
21 R/W Battery power supply OFF — Battery voltage
22 Y/G Ignition power supply ON — Battery voltage
29 B Ground (POWER) ON — 0 V
30 B Ground ON — 0 V
SKIA3362E
SKIA3361E
Te r m i -
nal No.Wire
colorItem Measuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
1 BR/Y Seat belt buckle switch (Driver side) ONSeat belt is unfastened. 0 V
Seat belt is fastened. 5 V

WARNING CHIME
DI-83
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
CONSULT-III Function (METER A/C AMP)NKS0007O
Refer to DI-47, "CONSULT-III Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
CONSULT-III Function (BCM)NKS0007P
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
DIAGNOSTIC ITEMS DESCRIPTION
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
SELF-DIAGNOSTIC RESULTS
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after printing the monitor item, go to “CAN system”. Refer to
LAN-48, "
CAN System Specification Chart" .
Trouble DiagnosisNKS00267
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom and customer complaint.
2. Understand the outline of system. Refer to DI-71, "
System Description" .
3. Perform the preliminary inspection. Refer to DI-84, "
PRELIMINARY INSPECTION" .
4. Referring to trouble diagnosis chart, make sure the cause of the malfunction and repair or replace applica-
ble parts. Refer to DI-84, "
Symptom Chart" .
5. Does warning chime system operate normally? If yes, GO TO 6. If no, GO TO 4.
6. INSPECTION END
System Test item Diagnosis mode Description
BCMBCMSELF-DIAG
RESULTBCM performs self-diagnosis of CAN communication.
BUZZERDATA MONITOR The input data to the BCM control unit is displayed in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending driving signal
to them.
Monitor item [Unit] ALL SIGNALSSELECTION
FROM MENUContents
IGN ON SW [ON/OFF] X X Indicates [ON/OFF] condition of ignition switch.
KEY ON SW [ON/OFF] X X Indicates [ON/OFF] condition of key switch.
DOOR SW-DR [ON/OFF] X X Indicates [ON/OFF] condition of driver side door switch.
LIGHT SW 1ST [ON/OFF] X X Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW [ON/OFF] X X Indicates [ON/OFF] condition of seat belt switch.
Test item Malfunction is detected when···
LIGHT WARN ALM This test is able to check light warning chime operation.
IGN KEY WARN ALM This test is able to check ignition key warning chime operation.
SEAT BELT WARN ALM This test is able to check seat belt warning chime operation.
Display item [Code] Malfunction is detected when···
CAN communication [U1000] Malfunction is detected in CAN communication.