2007 NISSAN 350Z fuel consumption

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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

TRIPLE METERS
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TRIP COMPUTER
Function
When the ignition switch is turned ON, the display scrolls all the modes. And then shows the mode chosen
before the ignition switch is turned OFF.

Trip computer is operated by the trip computer switch.

Trip computer receives a switch signal from combination meter
through the unified meter and A/C amp. with communication
line.
The mode of the trip computer is the following.

Vehicle speed

Ambient air temperature

DTE (distance to empty)

Average fuel consumption

Average vehicle speed

Trip time

Trip distance

St op watc h

Shift-up indicator setting mode
How to Change/ Reset the Displayed Mode

The displayed mode can be selected in the following order by momentarily pressing the trip computer
mode switch.
–Vehicle speed → Ambient air temperature → DTE → Average fuel consumption and average vehicle
speed → Trip time and trip distance → Stopwatch → Shift-up indicator setting

Holding the trip computer setting switch for more than 1 second resets the displayed mode (Average fuel
consumption, average vehicle speed, trip time, trip distance or stopwatch).
NOTE:
When the ambient air temperature warning, the tire pressure warning, and the DTE warning, match warning
conditions at the same time, the display automatically displays the ambient air temperature warning.
Vehicle Speed

Trip computer receives vehicle speed signal from combination meter through the unified meter and A/C
amp. with communication line.

Trip computer displays the vehicle speed according to vehicle speed signal.
Ambient Air Temperature

Unified meter and A/C amp. reads ambient air temperature signal from ambient air temperature sensor.
Signal is supplied
–from unified meter and A/C amp. terminal 39
–through ambient sensor terminal 1 and 2
–to unified meter and A/C amp. terminal 49.

Trip computer receives ambient air temperature signal from the unified meter and A/C amp. with commu-
nication line.

Trip computer displays ambient air temperature according to ambient air temperature signal.
NOTE:

Indication range is between −30 and 55 °C (−22 and 131 °F).

When ambient air temperature is less than −30 °C (−22 °F) or more than 55 °C (131 °F), the display
shows “--”.

When ambient air temperature is less than 3 °C (37 °F) continuously, the display shows “ICY” as warning.
At more than 4 °C (39 °F) the display stops showing “ICY”.
PKIA2098E

DI-28
TRIPLE METERS
Revision: 2006 November2007 350Z
DTE (Distance to Empty)

Unified meter and A/C amp. uses following signals to calculate the DTE signal.
–Fuel remaining signal (from the fuel level sensor unit)
–Fuel consumption signal (from ECM)
–Vehicle speed signal [from VDC/TCS/ABS control unit or ABS actuator and electric unit (control unit)]

Trip computer receives DTE signal from the unified meter and A/C amp. with communication line.

Trip computer displays the DTE according to DTE signal.

The indication is refreshed every 30 seconds.
NOTE:

When fuel remaining is less than approx. 10 (10-5/8 US qt, 8-3/4 Imp qt), the display shows “dte” blink
as a warning. And the fuel remaining is less than approx. 8 (8-1/2 US qt, 7 Imp qt), the display shows “-
---”.

When the battery cable is disconnected and reconnected, the display shows “----” for 30 seconds.
Average Fuel Consumption

Unified meter and A/C amp. uses following signals to calculate the average fuel consumption signal.
–Fuel consumption signal (from ECM)
–Vehicle speed signal [from VDC/TCS/ABS control unit or ABS actuator and electric unit (control unit)]

Trip computer receives the average fuel consumption signal from the unified meter and A/C amp. with
communication line.

Trip computer displays the average fuel consumption according to the average fuel consumption signal.

The indication is refreshed every 30 seconds.
NOTE:
If the average fuel consumption is reset, the average vehicle speed is reset at the same time. While driving
about 1/3 miles (500 m) or for 80 seconds after resetting, the display shows “----”.
Average Vehicle Speed

Unified meter and A/C amp. uses following signals to calculate the average vehicle speed signal.
–Trip distance signal
–Trip time signal

Trip computer receives the average vehicle speed signal from the unified meter and A/C amp. with com-
munication line.

Trip computer displays the average vehicle speed according the average vehicle speed signal.

The indication shows refreshed every 30 seconds.
NOTE:
If the average vehicle speed is reset, the average fuel consumption will be reset at the same time. After reset-
ting, the display will show “----” for 30 seconds.
Trip Time

Unified meter and A/C amp. calculates the time during ignition switch ON.

Trip computer receives the trip time signal from the unified meter and A/C amp. with communication line.

Trip computer displays trip time according to the trip time signal.
NOTE:
If trip time is reset, trip distance is reset at the same time.
Trip Distance

Unified meter and A/C amp. uses following signals to calculate the average fuel consumption signal.
–Trip time signal
–Vehicle speed signal from VDC/TCS/ABS control unit or ABS actuator and electric unit (control unit)

Trip computer receives the trip distance signal from the unified meter and A/C amp. with communication
line.

Trip computer displays the trip distance according to the trip distance signal.
NOTE:
If trip distance is reset, trip time will be reset at the same time.

TRIPLE METERS
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Stopwatch
Trip computer displays stopwatch.
NOTE:

After 100 hours, the time will start from the reset display again.

Even if the display is switched to the other mode while the time is starting, the stopwatch continues to
advance until the time in the stopwatch mode is stopped.

When the ignition switch is turned OFF, the stopwatch is reset.
Shift-up Indicator Setting Mode
NOTE:
The range of engine speed is 2,000 - 8,000 rpm (when exceeding 8,000 rpm returns to 2,000 rpm).
FA I L - S A F E
Triple meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning.
Trip computer setting switchPress and hold
(for more than 1 sec.)Press
(for less than 1 sec.)
Setting engine speed Increase setting engine speed by 500 rpm. Increase setting engine speed by 100 rpm.
Function Fail-safe operation
Trip computerVehicle speed indication Displays “---”
Outside air temperature indication Displays “--”
DTE (Distance to empty) indication
Displays “----” Average fuel consumption indication
Average vehicle speed indication
Trip distance indication
Trip time indication Displays “--:--”
Illumination control Triple meter illumination Change to nighttime mode.

TRIPLE METERS
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Trouble DiagnosisNKS0006N
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform diagnosis according to diagnosis flow. Refer to DI-39, "
PRELIMINARY CHECK" .
3. According to the symptom chart, repair or replace the cause of the symptom.
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK
1. CHECK COMMUNICATION LINE
Perform self-diagnosis of unified meter and A/C amp.
Self-diagnostic results content
No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
2. CHECK OPERATION OF SELF-DIAGNOSIS MODE (COMBINATION METER)
Activate self-diagnosis mode of combination meter. Refer to DI-15, "
Self-Diagnosis Mode of Combination
Meter" .
Does self-diagnosis mode operate?
YES >> GO TO 3.
NO >> Check combination meter power supply and ground circuit. If normal, replace combination meter.
3. CHECK OPERATION OF SELF-DIAGNOSIS MODE (TRIPLE METER)
Check operation of triple meter in self-diagnosis mode. Refer to DI-38, "
Self-Diagnosis Mode of Triple Meter" .
Does self-diagnosis mode operation namely?
YES >> INSPECTION END
NO >> GO TO 4.
4. CHECK POWER SUPPLY AND GROUND CIRCUIT OF TRIPLE METER
Check power supply and ground circuit of triple meter.
OK or NG
OK >> Replace triple meter.
NG >> Repair power supply and ground circuit of triple meter.
Symptom ChartNKS0006O
Trouble phenomenon Possible cause
Speed indication is not displayed properly. Refer to DI-40, "
Vehicle Speed Signal Inspection" .
Ambient air temperature indication is not displayed properly.
(It may take a short time to steady the indication after ignition
switch is turned ON.)
NOTE:
If the meter is powered up with the ambient sensor disconnected,
ambient air temperature display will show “---” even if the sensor is
reconnected. In this case, with the sensor connected, disconnect
and reconnect the battery, then the correct temperature will be dis-
played.Refer to ATC-92, "
AMBIENT TEMPERATURE INPUT PRO-
CESS" in “ATC”.
DTE (distance to empty) indication is not displayed properly.
Refer to DI-40, "
Fuel Consumption Monitor Signal Inspection" .
Average fuel consumption indication is not displayed properly.
Shift-up indicator setting indication is not displayed properly or
shift-up indicator does not operate properly.Refer to DI-42, "
Trip Computer Switch Inspection" .

DI-40
TRIPLE METERS
Revision: 2006 November2007 350Z
Vehicle Speed Signal InspectionNKS0006R
Symptom: Speed indication is not displayed properly.
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-III.
2. Using “SPEED METER” on the “DATA MONITOR”, compare the value of data monitor with speed indica-
tion of trip computer.
OK or NG
OK >> Refer to DI-18, "Vehicle Speed Signal Inspection" of “COMBINATION METERS”.
NG >> Replace triple meter.
Fuel Consumption Monitor Signal InspectionNKS0006S
Symptom:

DTE (distance to empty) indication is not displayed properly.

Average fuel consumption indication is not displayed properly.
1. CHECK ECM (CONSULT-III)
Perform self-diagnosis of ECM. Refer to EC-116, "
CONSULT-III Function (ENGINE)" .
Self
-diagnostic results
No malfunction detected>>Replace unified meter and A/C amp.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
Oil Pressure Sensor Signal InspectionNKS0006T
Symptom: Indication is malfunction of oil pressure gauge.
1. CHECK OIL PRESSURE SENSOR SIGNAL INPUT
1. Turn ignition switch ON.
2. Check voltage between triple meter harness connector M44 ter-
minal 8 and ground.
OK or NG
OK >> Replace triple meter.
NG >> GO TO 2.
Average vehicle speed indication is not indicated properly.
Replace triple meter. Trip distance indication is not indicated properly.
Trip time indication is not indicated properly.
Stopwatch indication is not displayed properly.
Indication is malfunction of voltmeter.
Indication is malfunction of oil pressure gauge. Refer to DI-40, "
Oil Pressure Sensor Signal Inspection" .
Trip computer switch is not operate. Refer to DI-42, "
Trip Computer Switch Inspection" . Trouble phenomenon Possible cause
8 – Ground
When ignition switch is in ON
position (Engine stopped.): Approx. 1 V
Engine running [When the oil
pressure is 80 psi (500 kPa)]: Approx. 3 V
SKIB1167E

UNIFIED METER AND A/C AMP
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TRIPLE METER CONTROL FUNCTION

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

Unified meter and A/C amp. calculates necessary information for trip computer.

Unified meter and A/C amp. converses with the combination meter transmits a signal with through com-
munication line (TX, RX) between unified meter and A/C amp. and triple meter.
Input/output signals between unified meter and A/C amp. and triple meter
NOTE:
Triple meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-29, "
FA I L-
SAFE" .
A/C AUTO AMP. FUNCTION
Unified meter and A/C amp. controls each operation for A/C auto amp. Regarding A/C control, refer to AT C -
24, "AIR CONDITIONER CONTROL" in ATC section.
OTHER FUNCTIONS
Signal Buffer Function
Unified meter and A/C amp. transmits each signal to other units with CAN communication.
Unit Input Output
Unified meter and A/C amp.

LCD indication condition signal

Shift-up indicator setting signal

Oil pressure warning lamp signal

Triple meter receive error signal

Ambient air temperature signal

Ambient air temperature warning signal

Trip distance signal

Trip time signal

Average vehicle speed signal

Average fuel consumption signal

Vehicle speed signal

DTE (Distance to empty) signal

DTE (Distance to empty) warning signal

Tire pressure warning signal

Trip computer mode switch signal

Trip computer setting switch signal

Self-diagnosis condition signal

Odo/trip switch signal

Triple meter specifications signal