2007 NISSAN 350Z Diagnosis

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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-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 ....................................

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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Revision: 2006 November2007 350Z
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" .

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)

DI-22
COMBINATION METERS
Revision: 2006 November2007 350Z
2. CHECK ILLUMINATION CONTROL SWITCH
1. Disconnect illumination control switch connector.
2. Check continuity between illumination control switch harness
connector M207 terminals 3 or 4 and 5.
OK or NG
OK >> Replace combination meter.
NG >> Replace illumination control switch.
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or VariesNKS0006A
1. CHECK FUEL GAUGE FLUCTUATION
Test drive vehicle to see if gauge fluctuates only during driving or at the instant of stopping.
Does the indication value vary only during driving or at the instant of stopping?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal.
NO >> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble
diagnosis.
Fuel Gauge Does Not Move to FULL PositionNKS0006B
1. QUESTION 1
Does it take a long time for the pointer to move to FULL position?
YES >> GO TO 2.
NO >> GO TO 3.
2. QUESTION 2
Was the vehicle fueled with the ignition switch ON?
YES >> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move
to FULL position because of the characteristic of the fuel gauge.
NO >> GO TO 3.
3. QUESTION 3
Is the vehicle parked on an incline?
YES >> Check the fuel level indication with vehicle on a level surface.
NO >> GO TO 4.
4. QUESTION 4
During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES >> Check the fuel level sensor unit. Refer to DI-23, "FUEL LEVEL SENSOR UNIT" .
NO >> The float arm may interfere or bind with any of the components in the fuel tank.
Terminal Condition Continuity
3
5Illumination control switch upper
side (BRIGHTEN) is pressed.Ye s
Illumination control switch upper
side (BRIGHTEN) is released.No
4Illumination control switch lower side
(DARKEN) is pressed.Ye s
Illumination control switch lower side
(DARKEN) is released.No
SKIA3271E