2007 NISSAN 350Z ignition

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

DI-6
COMBINATION METERS
Revision: 2006 November2007 350Z
How to Change The Display
Pressing the odo/trip meter switch toggles the display mode in the following order.

The odo/trip meter display mode toggling and trip display resetting can be identified by the time elapsed
from pressing the odo/trip meter switch to releasing it.

When resetting with “trip A” displayed, only “trip A” is reset. (The “trip B” functions in the same way.)
NOTE:
The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter is
erased when the battery cable is disconnected.
ILLUMINATION CONTROL
Daytime Mode
When ignition switch is turned ON, combination meter and triple meter illumination is turned ON by unified
meter control unit.
Nighttime Mode

Unified meter control unit is transferred to nighttime mode, with ignition switch turned ON and position
light request signal from BCM with CAN communication.

When in nighttime mode, trip computer switch, and illumination control switch illumination turns ON by
unified meter control unit. Each illumination is controlled by unified meter control unit.

Each illumination can be adjusted to 16 step by illumination con-
trol switch in nighttime mode.
NOTE:
For further details of illumination circuit, refer to LT- 1 5 6 , "
ILLUMINA-
TION" .
PKIC4659E
SKIA7096E

COMBINATION METERS
DI-13
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
Terminals and Reference Value for Combination MeterNKS0005X
Terminal
No.Wire
colorItemMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
10
B Ground ON — 0 V 11
12
14 LG ACC power supply ACC — Battery voltage
18 R/Y Illumination signal ONLighting switch ON, then
operate the illumination
control switch.When brightness level is midway
Lighting switch OFF 0 V
20 WVehicle speed signal input
(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).
21 R/GTX communication line
(To unified meter and A/C amp.)ON —
22 L/ORRX communication line
(From unified meter and A/C
amp.)ON —
23 G/Y Ignition power supply ON — Battery voltage
24 R/W Battery power supply OFF — Battery voltage
PKIA3771E
PKIA1935E
SKIA3361E
SKIA3362E

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
DI-15
C
D
E
F
G
H
I
J
L
MA
B
DI
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

COMBINATION METERS
DI-17
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
Power Supply and Ground Circuit InspectionNKS00064
1. CHECK FUSE
Check for blown combination meter fuses.
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" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector M19
terminals 24, 23, 14 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness between combination meter and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
M19 terminals 10, 11, 12 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Power source Fuse No.
Battery 19
Ignition switch ACC or ON 6
Ignition switch ON or START 14
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M1924
GroundBattery
voltageBattery
voltageBattery
voltage
23 0 V 0 VBattery
voltage
14 0 VBattery
voltageBattery
voltage
SKIB1153E
10 – Ground
: Continuity should exist. 11 – Ground
12 – Ground
SKIA8715E

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