2007 NISSAN 350Z fuel

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DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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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

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
DI-5
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Revision: 2006 November2007 350Z
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

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-14
COMBINATION METERS
Revision: 2006 November2007 350Z
Terminals and Reference Value for Unified Meter and A/C Amp.NKS0005Y
Terminal
No.Wire
colorItemMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
1 L CAN-H — — —
9L/ORTX communication line
(To combination meter)ON —
11 P C A N - L — — —
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
26 WVehicle 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).
28 W/B Fuel level sensor signal — —Refer to DI-23, "
FUEL LEVEL
SENSOR UNIT" .
29 B Ground (For power) ON — 0 V
30 B Ground ON — 0 V
36 R/B Fuel level sensor ground ON — 0 V
46 L/W ACC power supply ACC — Battery voltage
SKIA3362E
SKIA3361E
PKIA1935E

COMBINATION METERS
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Self-Diagnosis Mode of Combination MeterNKS0005Z
SELF-DIAGNOSIS FUNCTION

Odo/trip meter segment and A/T indicator 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” will indicate “0000.0”,
but the actual trip mileage will be retained. (The “trip B” functions in the same way.)
2. Turn ignition switch OFF.
3. While pressing the odo/trip meter switch, turn ignition switch ON again.
4. Make sure that the trip meter displays “0000.0”.
5. Press the odo/trip meter switch at least 3 times (within 7 seconds after the ignition switch is turned ON).
6. All the segments on the odo/trip meter and A/T indicator illuminate, and simultaneously the low-fuel warn-
ing lamp indicator illuminates. At this time, the unified meter control unit is turned to diagnosis mode.
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. Press the odo/trip meter switch. Each meter/gauge should indi-
cate as shown in the figure while pressing odo/trip meter switch.
(At this time, the low-fuel warning lamp goes off).
NOTE:
If any of the meter/gauge is not activated, replace combination
meter.
CONSULT-III Function (METER A/C AMP)NKS00060
Refer to DI-47, "CONSULT-III Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
PKIA1997E
PKIA1857E

DI-16
COMBINATION METERS
Revision: 2006 November2007 350Z
Trouble DiagnosisNKS00061
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-16, "
PRELIMINARY CHECK" .
3. According to the symptom chart, make sure of the symptom cause and repair or replace applicable parts.
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK
1. CHECK OPERATION OF SELF-DIAGNOSIS MODE (COMBINATION METER)
Perform self-diagnosis mode of combination meter. Refer to DI-15, "
SELF-DIAGNOSIS FUNCTION" .
Does self-diagnosis mode operation normally?
YES >> GO TO 2.
NO >> GO TO 3.
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.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check power supply and ground circuit of combination meter. Refer to DI-17, "
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 ChartNKS00062
Symptom Possible cause
Speedometer and odo/trip meter indication is malfunction. Refer to DI-18, "
Vehicle Speed Signal Inspection" .
Tachometer indication is malfunction. Refer to DI-19, "
Engine Speed Signal Inspection" .
Water temperature gauge indication is malfunction. Refer to DI-19, "
Engine Coolant Temperature Signal Inspection" .
Fuel gauge indication is malfunction.
Refer to DI-19, "
Fuel Level Sensor Signal Inspection" .
Low-fuel warning lamp indication is irregular.
A/T position indicator is malfunction. Refer to DI-70, "
A/T Indicator Is Malfunction" .
Illumination control does not operate. Refer to DI-21, "
Illumination Control Switch Inspection" .

COMBINATION METERS
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Engine Speed Signal InspectionNKS00066
Symptom: Tachometer indication is malfunction.
1. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-III.
2. Using “TACHO METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with tachometer
pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-III.
2. Using “ENG SPEED” on “DATA MONITOR”, check the CONSULT-III screen when the engine is idling.
3. Select “METER A/C AMP” on CONSULT-III.
4. Using “TACHO METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” of the idling
speed with that of the “ENG SPEED”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-116, "CONSULT-III Function (ENGINE)" .
NG >> Replace unified meter and A/C amp.
Engine Coolant Temperature Signal InspectionNKS00067
Symptom: Water temperature gauge indication is malfunction.
1. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-III.
2. Using “W TEMP METER” on the “DATA MONITOR”, compare the value of “DATA MONITOR” with water
temperature gauge pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-III.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, check the CONSULT-III screen.
3. Select “METER A/C AMP” on CONSULT-III.
4. Using “W TEMP METER” on, compare the value of “DATA MONITOR” with that of the “COOLAN TEMP/
S”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-116, "CONSULT-III Function (ENGINE)" .
NG >> Replace unified meter and A/C amp.
Fuel Level Sensor Signal InspectionNKS00068
Symptom:

Fuel gauge indication is malfunction.

Low-fuel warning lamp indication is irregular.
Water temperature gauge pointer Reference value of data monitor [°C (°F)]
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221)
Cold Approx. 50 (122)