2007 NISSAN 350Z engine

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DRIVER INFORMATION SYSTEM
K ELECTRICAL
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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

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

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-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" .

DI-18
COMBINATION METERS
Revision: 2006 November2007 350Z
Vehicle Speed Signal InspectionNKS00065
Symptom: Indication is irregular for the Speedometer and odo/trip meter.
1. CHECK VDC/TCS/ABS CONTROL UNIT OR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
Perform the following units self-diagnosis.

VDC/TCS/ABS control unit [with VDC]. Refer to BRC-96, "CONSULT-III Functions (ABS)" .

ABS actuator and electric unit (control unit) [without VDC (with TCS)]. Refer to BRC-52, "CONSULT-III
MAIN FUNCTION" .

ABS actuator and electric unit (control unit) [without VDC (without TCS)]. Refer to BRC-19, "CONSULT-III
MAIN FUNCTION" .
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. OUTPUT SIGNAL
1. Start engine and drive vehicle at approximately 40 km/h (25 MPH).
2. Check voltage signal between unified meter and A/C amp. har-
ness connector M49 terminal 26 and ground.
OK or NG
OK >> GO TO 3.
NG >>

If monitor indicates “0 V” constantly, repair or replace malfunctioning parts after checking each
unit inputting vehicle speed signal (8 pulse), harness and connector between each unit and uni-
fied meter and A/C amp.

If monitor indicates “5 V” or “12 V” constantly, replace unified meter and A/C amp.
3. CHECK CONTINUITY BETWEEN COMBINATION METER AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
3. Check continuity between combination meter harness connector
M19 terminal 20 and unified meter and A/C amp. harness con-
nector M49 terminal 26.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.26 – Ground:NOTE:
Maximum voltage may
be 5 V due to specifica-
tions (connected units).
SKIB0338E
PKIA1935E
20 – 26 : Continuity should exist.
SKIB0339E

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)

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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Terminals and Reference Value for Triple MeterNKS0006I
Terminal
No.Wire
colorItemMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
1 B Ground ON — 0 V
2 R/W Battery power supply OFF — Battery voltage
3 G/Y Ignition power supply ON — Battery voltage
4PTX communication line
(To unified meter and A/C amp.)ON —
5L/BRX communication line
(From unified meter and A/C amp.)ON —
7 G/OR Oil pressure sensor ground ON — 0 V
8 LG/R Oil pressure sensor signal ONWhen ignition switch is in ON
position (Engine stopped.)1 V
Engine running [When the oil
pressure is 80 psi (500 kPa)]3 V
9 R/L Oil pressure sensor power supply ON — 5 V
12 R Illumination signal input ONLighting switch ON, then
operate the illumination con-
trol switch. When brightness level is
midway
Lighting switch OFF 0 V
SKIA3364E
SKIA3363E
SKIA7256E