2007 NISSAN 350Z Driver Information Manual

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DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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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
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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-4
COMBINATION METERS
Revision: 2006 November2007 350Z
COMBINATION METERSPFP:24814
System DescriptionNKS0005S
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 a
signals 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.

Odo/trip meter and A/T indicator segments can be checked in self-diagnosis mode.

Meters/gauges can be checked in self-diagnosis mode.
UNIFIED METER AND A/C AMP.
Refer to DI-44, "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. 19, located in the fuse block (J/B)]

to combination meter terminal 24.
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 23.
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 14.
Ground is supplied

to combination meter terminals 10, 11 and 12

through body grounds M30 and M66.
SPEEDOMETER

VDC/TCS/ABS control unit [with VDC] or ABS actuator and electric unit (control unit) [without VDC] pro-
vides a vehicle speed signal to the unified meter and A/C amp. with CAN communication line.

Unified meter and A/C amp. converts the vehicle speed signal to the 8-pulse signal, and outputs the vehi-
cle speed signal (8-pulse) to combination meter.

Combination meter indicates the vehicle speed according to vehicle speed signal (8-pulse).
PKIC4371E

COMBINATION METERS
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TACHOMETER

ECM provides engine speed signal to unified meter and A/C amp. with CAN communication line.

Unified meter and A/C amp. transmits engine speed signal to combination meter with communication line.

Combination meter indicates the engine speed according to engine speed signal.
WATER TEMPERATURE GAUGE

ECM provides engine coolant temperature signal to unified meter and A/C amp. with CAN communication
line.

Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter with com-
munication line.

Combination meter indicates the engine coolant temperature according to engine coolant temperature
signal.
FUEL GAUGE

Unified meter and A/C amp. reads a resistor signal from fuel level sensor.
Signal is supplied
–from unified meter and A/C amp. terminal 36
–through fuel level sensor unit and fuel pump (main) terminals 5 and 2, and
–through fuel level sensor unit (sub) terminals 2 and 1
–to unified meter and A/C amp. terminal 28.

Unified meter and A/C amp. provides a fuel level signal to combination meter with communication line.

Combination meter indicates the approximate fuel level according to fuel level signal.
ODO/TRIP METER

VDC/TCS/ABS control unit [with VDC] or ABS actuator and electric unit (control unit) [without VDC] pro-
vides a vehicle speed signal to the unified meter and A/C amp. with CAN communication line.

Unified meter and A/C amp. converts the vehicle speed signal to the 8-pulse signal, and outputs the vehi-
cle speed signal (8-pulse) to combination meter.

Combination meter uses the vehicle speed signal (8-pulse) to calculate the mileage, and displays it.
PKIB7631E
PKIB7632E

DI-6
COMBINATION METERS
Revision: 2006 November2007 350Z
How to Change The Display
Pressing the odo/trip meter switch toggles the display mode in the following order.

The odo/trip meter display mode toggling and trip display resetting can be identified by the time elapsed
from pressing the odo/trip meter switch to releasing it.

When resetting with “trip A” displayed, only “trip A” is reset. (The “trip B” functions in the same way.)
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.
ILLUMINATION CONTROL
Daytime Mode
When ignition switch is turned ON, combination meter and triple meter illumination is turned ON by unified
meter control unit.
Nighttime Mode

Unified meter control unit is transferred to nighttime mode, with ignition switch turned ON and position
light request signal from BCM with CAN communication.

When in nighttime mode, trip computer switch, and illumination control switch illumination turns ON by
unified meter control unit. Each illumination is controlled by unified meter control unit.

Each illumination can be adjusted to 16 step by illumination con-
trol switch in nighttime mode.
NOTE:
For further details of illumination circuit, refer to LT- 1 5 6 , "
ILLUMINA-
TION" .
PKIC4659E
SKIA7096E

COMBINATION METERS
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SHIFT-UP INDICATOR

Shift-up indicator can be used when shifting up at a constant
engine speed from any gear while driving. It becomes a guide
for shift-up timing.

Shift-up indicator flashes approximately 500 rpm before reach-
ing the engine speed set. It illuminates when reaching the
engine speed set.
Shift-up engine speed can be set by the shift-up indicator setting
mode on trip computer. Refer to DI-29, "
Shift-up Indicator Setting
Mode" .
NOTE:

There may be a time lag between the shift-up indicator illumina-
tion and the tachometer indication.

If the battery cable is disconnected, the set engine speed becomes 7,000 rpm.
FA I L - S A F E
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malunc-
tion.
PKIA2097E
Function Fail-safe operation
Speedometer Return to zero
Tachometer
Reset to zero Fuel gauge
Water temperature gauge
Illumination control Combination meter illumination Change to nighttime mode
Odo/trip meter Integrate in response to 8-pulse input
A/T indicator The display turns OFF
Meter buzzer The meter buzzer turns OFF
Warning lamp/indicator lampABS warning lamp
The lamp turns ON VDC OFF indicator lamp
TCS OFF indicator lamp
SLIP indicator lamp
Brake warning lamp
Tire pressure warning lamp
A/T CHECK lamp
The lamp turns OFF Oil pressure warning lamp
Door warning lamp
High beam indicator lamp
Turn signal indicator lamp
Malfunction indicator lamp
CRUISE indicator lamp
SET indicator lamp

DI-8
COMBINATION METERS
Revision: 2006 November2007 350Z
Component Parts and Harness Connector LocationNKS0005T
PKIC5125E