2007 NISSAN 350Z service

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DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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SECTION DI
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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

PRECAUTIONS
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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-84
WARNING CHIME
Revision: 2006 November2007 350Z
PRELIMINARY INSPECTION
1. CHECK BCM (CONSULT-III)
Perform self-diagnosis of BCM. Refer to BCS-15, "
CONSULT-III Function (BCM)" .
Self
-diagnostic results
No malfunction detected>> GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-III)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-47, "
CONSULT-III Function (METER A/C
AMP)" .
Self
-diagnostic results
No malfunction detected>> INSPECTION END
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
Symptom ChartNKS00268
Power Supply and Ground Circuit InspectionNKS00269
1. CHECK FUSE AND FUSIBLE LINK
Check for blown BCM fuse and fusible link.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-4, "
POWER
SUPPLY ROUTING CIRCUIT" .
Symptom Diagnoses/Service procedure
All warning chimes do not activate.Perform the following inspections.
1.DI-84, "
Power Supply and Ground Circuit Inspection".
2.DI-85, "
Meter Buzzer Circuit Inspection".
Replace BCM, found normal function in the above inspections.
Ignition key warning chime does not activate.Perform the following inspections.
1.DI-87, "
Key Switch Signal Inspection".
2.DI-86, "
Driver Side Door Switch Signal Inspection".
Replace BCM, found normal function in the above inspection.
Light warning chime does not activate.Perform the following inspections.
1.DI-88, "
Lighting Switch Signal Inspection".
2.DI-86, "
Driver Side Door Switch Signal Inspection".
Replace BCM, found normal function in the above inspection.
Seat belt warning chime does not activate.Perform DI-88, "
Seat Belt Buckle Switch (Driver Side) Signal
Inspection" .
Replace BCM, found normal function in the above inspection.
Unit Power source Fuse and fusible link No.
BCMBatteryF
18
Ignition switch ON or START 1