Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 350Z 2003-2007 Approved Nissan 350Z 2003 Di
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DRIVER INFORMATION SYSTEM
K ELECTRICAL
A
B
SECTION
DRIVER INFORMATION SYSTEM C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . Fuel Level Sensor Signal Inspection 2 .................. 20 . F
Precautions for Supplemental Restraint System FUEL WARNING LAMP ..................................... 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Fuel Level Sensor Signal Inspection 3 .................. 20 .
SIONER" ................................................................. 3
. CAN Communication System Inspection ............... 22 . G
Precautions for Battery Service ............................... 3 . Communication Line Inspection ............................ 23 .
Wiring Diagrams and Trouble Diagnosis ................. 3 . A/T Device Output Signal Inspection ..................... 24 .
COMBINATION METERS .......................................... 4 . Illumination Control Switch Inspection ................... 24 .
H
System Description ................................................. 4 . Fuel Gauge Pointer Fluctuates, Indicator Wrong
UNIFIED METER CONTROL UNIT ..................... 4 . Value or Varies ...................................................... 25
.
UNIFIED METER AND A/C AMP. ........................ 4 . Fuel Gauge Does Not Move to Full-position .......... 25 .
HOW TO CHANGE THE DISPLAY FOR ODO/ Electrical Components Inspection ......................... 26 . I
TRIP METER ....................................................... 4 . FUEL LEVEL SENSOR UNIT CHECK ............... 26 .
POWER SUPPLY AND GROUND CIRCUIT ....... 5 . Removal and Installation for Combination Meter ... 26
WATER TEMPERATURE GAUGE ....................... 5 . REMOVAL .......................................................... 26. J
TACHOMETER .................................................... 5 . INSTALLATION .................................................. 26 .
FUEL GAUGE ...................................................... 5 . Disassembly and Assembly for Combination Meter 27 ...
SPEEDOMETER .................................................. 5 . TRIPLE METERS ..................................................... 29 .
DI
Component Parts and Harness Connector Location 6 ..... System Description ................................................ 29 .
Combination Meter .................................................. 7 . TRIPLE METER ................................................. 29 .
CHECK ................................................................. 7
. POWER SUPPLY AND GROUND CIRCUIT ...... 29 .
Circuit Diagram ....................................................... 8
. TRIP COMPUTER .............................................. 29 . L
Wiring Diagram -- METER -- ................................. 9 . OIL PRESSURE GAUGE ................................... 32 .
Terminals and Reference Value for Combination VOLTMETER ...................................................... 32 .
Meter ......................................................................11
. Schematic .............................................................. 33
. M
Terminals and Reference Value for Unified Meter Wiring Diagram -- 3METER -- ............................. 34 .
and A/C Amp. ........................................................ 12. Terminals and Reference Value for Triple Meter ... 38
Meter/Gauges Operation and Odo/Trip Meter ....... 12 . Terminals and Reference Value for Combination
SELF-DIAGNOSIS FUNCTION ......................... 12 . Meter ..................................................................... 38
.
HOW TO ALTERNATE DIAGNOSIS MODE ...... 12 . Terminals and Reference Value for Unified Meter
CONSULT-II Function ........................................... 13 . and A/C Amp. ........................................................ 39.
How to Proceed With Trouble Diagnosis ............... 13 . Meter/Gauges Operation and Trip Computer ........ 40 .
Diagnosis Flow ...................................................... 13. SELF-DIAGNOSIS FUNCTION .......................... 40 .
Power Supply and Ground Circuit Check .............. 15 . HOW TO ALTERNATE DIAGNOSIS MODE ...... 40 .
Symptom Chart 1 .................................................. 16 . CONSULT-II Function ............................................ 41 .
Symptom Chart 2 .................................................. 16 . How to Proceed With Trouble Diagnosis ............... 41 .
Vehicle Speed Signal Inspection ........................... 17 . Diagnosis Flow ...................................................... 41.
Engine Speed Signal Inspection ........................... 19 . Power Supply and Ground Circuit Check .............. 42 .
Water Temperature Signal Inspection ................... 19 . Symptom Chart 1 ................................................... 44 .
Fuel Level Sensor Signal Inspection 1 .................. 19 . Symptom Chart 2 ................................................... 45 .
FUEL GAUGE .................................................... 19 . Vehicle Speed Signal Inspection ........................... 45 .
DI-1
Fuel Consumption Signal Inspection ..................... 45 . IGNITION KEY WARNING CHIME .....................82 .
Oil Pressure Sensor Inspection ............................. 46 . LIGHT WARNING CHIME ..................................82 .
Communication Line Inspection ............................ 47 . SEAT BELT WARNING CHIME ..........................82 .
Trip Computer Switch Inspection ........................... 48 . CAN Communication System Description .............82 .
Removal and Installation of Triple Meters ............. 49 . CAN Communication Unit ......................................83 .
REMOVAL .......................................................... 49
. TYPE 1 ................................................................83
.
INSTALLATION ................................................... 49. TYPE 2/TYPE3 ...................................................85 .
Disassembly and Assembly for Triple Meters ........ 49 . TYPE 4/TYPE5 ...................................................87 .
UNIFIED METER AND A/C AMP ............................. 50 . TYPE 6/TYPE7 ...................................................88 .
System Description ................................................ 50
. Schematic ..............................................................90
.
INPUT/OUTPUT SIGNALS ................................ 50 . Wiring Diagram -- CHIME -- ................................91 .
FAIL-SAFE .......................................................... 51
. Terminals and Reference Value for BCM ...............94 .
CAN Communication System Description ............. 52 . Terminals and Reference Value for Unified Meter
CAN Communication Unit ...................................... 52 . and A/C Amp. .........................................................94 .
TYPE 1 ............................................................... 53
. Terminals and Reference Value for Combination
TYPE 2/TYPE3 ................................................... 54. Meter ......................................................................95
.
TYPE 4/TYPE5 ................................................... 56. How to Proceed With Trouble Diagnosis ...............95 .
TYPE 6/TYPE7 ................................................... 58. Preliminary Check ..................................................95 .
Schematic .............................................................. 60
. INSPECTION FOR POWER SUPPLY AND
CONSULT-II Function ............................................ 61 . GROUND CIRCUIT ............................................95 .
CONSULT-II BASIC OPERATION ...................... 61 . CONSULT-II Function ............................................96 .
SELF-DIAGNOSIS RESULTS ............................ 62 . DIAGNOSTIC ITEMS DESCRIPTION ................96 .
DATA MONITOR ................................................. 62 . CONSULT-II BASIC OPERATION PROCEDURE
WARNING LAMPS ................................................... 66 . ...96
Schematic .............................................................. 66
. DATA MONITOR .................................................97 .
Wiring Diagram -- WARN -- ................................. 67 . ACTIVE TEST .....................................................98 .
Oil Pressure Warning Lamp Stays Off (Ignition SELF-DIAGNOSTIC RESULTS ..........................98 .
Switch ON) or Stays On (Oil Pressure Is Normal)... 74 All Warnings Are Not Operated ..............................99 .
A/T INDICATOR ....................................................... 77
. Key Warning Chime Does Not Operate ............... 101 .
Wiring Diagram -- AT/IND -- ................................ 77 . Light Warning Chime Does Not Operate .............. 103 .
A/T Indicator Does Not Illuminate .......................... 79 . Seat Belt Warning Chime Does Not Operate ....... 103 .
A/T Indicator Is Malfunction ................................... 79 . CLOCK ................................................................... 106
.
WARNING CHIME .................................................... 81 . Wiring Diagram -- CLOCK -- .............................. 106 .
Component Parts and Harness Connector Location 81 ... Description ........................................................... 107
.
System Description ................................................ 81
. Clock Adjustment ................................................. 107 .
FUNCTION ......................................................... 81
.
DI-2
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS003V4
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
G
Precautions for Battery Service AKS003V6
This vehicle is equipped with the automatic window adjusting function. When a door is opened, the window
automatically lowers slightly to avoid contact between the window and the side roof panel. After the door is H
closed, the window will automatically raise slightly.
On vehicles equipped with the automatic window adjusting function, lower both the driver and front passenger I
side windows before disconnecting the battery cables. This will prevent interference between the side window
and the roof panel when either door is opened/closed.
J
CAUTION:
After the battery cables are disconnected, do not open/close the driver and/or front passenger door
with the window in the full up position. The automatic window adjusting function will not work and the
side roof panel may be damaged. DI
Wiring Diagrams and Trouble Diagnosis AKS000WM
When you read wiring diagrams, refer to the following: L
q Refer to GI-15, "How to Read Wiring Diagrams" .
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following: M
q Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" .
q Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" .
DI-3
COMBINATION METERS
COMBINATION METERS PFP:24814
System Description AKS000WN
UNIFIED METER CONTROL UNIT
q 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 sig-
nals from unified meter and A/C amp.
q Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.
q Digital meter is adopted for odo/trip meter.*
*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.
q Odo/trip meter and A/T indicator segments can be checked in diagnosis mode.
q Meters/gauges can be checked in diagnosis mode.
Illumination control
The unified meter control unit outputs the combination meter and tri-
ple meter dial lighting when the ignition switch is turned on. When
the lighting switch is turned on, light on for the trip computer switch,
illumination control switch and external lighting are output. In addi-
tion, when the lighting switch is turned on, the illumination control
switch on the left side of the combination meter can be used to
adjust the brightness of each light. The brightness can be adjusted
to five different levels: From 0 (no lights) to 4 (maximum). Pressing
the illumination control switch will brighten or darken the lights.
When the key switch is in the START position, the combination
meter and triple meter dial lighting and the trip computer switch and
SKIA3269E
illumination control switch lighting are turned off.
UNIFIED METER AND A/C AMP.
Refer to DI-50, "System Description" in "UNIFIED METER AND A/C AMP".
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER
q The vehicle speed signal and the memory signals from the meter memory circuit are processed by the
combination meter and the mileage is displayed.
q Depressing the odo/trip meter switch toggles the mode in the following order.
SEL175W
q The odo/trip meter display mode toggling and trip display resetting can be identified by the amount of time
that elapses from pressing the odo/trip meter switch to releasing it.
q When resetting with trip A displayed, only trip A display is reset (Trip B operates the same way).
DI-4
COMBINATION METERS
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times A
q through 10A fuse [No.19, located in the fuse block (J/B)]
q to combination meter terminal 24 and
B
q to unified meter and A/C amp. terminal 21.
With the ignition switch in the ON or START position, power is supplied
q through 10A fuse [No.14, located in the fuse block (J/B)] C
q to combination meter terminal 23, and
q through 10A fuse [No.12, located in the fuse block (J/B)]
q to unified meter and A/C amp. terminal 22. D
With the ignition switch in the ACC or ON position, power is supplied
q through 10A fuse [No.6, located in the fuse block (J/B)]
q to combination meter terminal 14, and E
q through 15A fuse [No.10, located in the fuse block (J/B)] and
q through 15A fuse [No.11, located in the fuse block (J/B)]
F
q to unified meter and A/C amp. terminal 46.
Ground is supplied
q to combination meter terminals 10, 11 and 12 G
q to unified meter and A/C amp. terminals 29 and 30
q through body grounds M30 and M66.
WATER TEMPERATURE GAUGE H
The water temperature gauge indicates the engine coolant temperature.
ECM provides a water temperature signal to unified meter and A/C amp. with CAN communication line. Uni-
fied meter and A/C amp. provides a water temperature signal to combination meter for water temperature I
gauge with communication line between unified meter and A/C amp. and combination meter.
TACHOMETER
J
The tachometer indicates engine speed in revolutions per minute (rpm).
ECM provides an engine speed signal to unified meter and A/C amp. CAN communication line. Unified meter
and A/C amp. provides an engine speed signal to combination meter for tachometer with communication line
between unified meter and A/C amp. and combination meter. DI
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
L
The fuel gauge is regulated by a variable ground signal supplied
q from unified meter and A/C amp. terminal 36
q through terminals 5 and 2 of the fuel level sensor unit and fuel pump (main), and M
q through terminals 2 and 1 of the fuel level sensor unit (sub)
q to unified meter and A/C amp. terminal 28 for the fuel gauge.
Unified meter and A/C amp. provides an fuel level signal to combination meter for fuel gauge with communica-
tion line between unified meter and A/C amp. and combination meter.
SPEEDOMETER
VDC/TCS/ABS control unit (with VDC system) or ABS actuator and electric unit (control unit) [without VDC
system] provides a vehicle speed signal to the unified meter and A/C amp. with CAN communication line. Uni-
fied meter and A/C amp. provides a vehicle speed signal to combination meter for speedometer with commu-
nication line between unified meter and A/C amp. and combination meter.
DI-5
COMBINATION METERS
Component Parts and Harness Connector Location AKS000WP
PKIA1933E
DI-6
COMBINATION METERS
Combination Meter AKS000WQ
CHECK A
B
C
D
E
F
G
H
I
J
DI
L
M
PKIA1855E
DI-7
COMBINATION METERS
Circuit Diagram AKS003IO
TKWT0478E
DI-8
COMBINATION METERS
Wiring Diagram -- METER -- AKS000WS
A
B
C
D
E
F
G
H
I
J
DI
L
M
TKWT0480E
DI-9
COMBINATION METERS
TKWT0482E
DI-10
COMBINATION METERS
Terminals and Reference Value for Combination Meter AKS002V8
A
CONDITION
TERMI- WIRE
ITEM Ignition REFERENCE VALUE (V)
NAL COLOR Operation or condition
switch
B
10 B Ground ON -- Approx. 0
11 B Ground ON -- Approx. 0
12 B Ground ON -- Approx. 0 C
Ignition switch ACC or
14 LG ACC -- Battery voltage
ON
18 R/Y Illumination signal ON -- Approx. 0 D
Speedometer operated E
Vehicle speed signal [When vehicle speed is
20 W ON
(8-pulse) approx. 40 km/h (25
MPH)]
F
PKIA1935E
G
TX communication line
21 R/G (To unified meter and A/C ON --
amp.)
H
SKIA3361E
I
RX communication line
22 L/OR (From unified meter and ON --
A/C amp.)
J
SKIA3362E
DI
Ignition switch ON or
23 G/Y ON -- Battery voltage
START
24 R/W Battery power supply OFF -- Battery voltage
L
M
DI-11
COMBINATION METERS
Terminals and Reference Value for Unified Meter and A/C Amp. AKS000WT
CONDITION
TERMI- WIRE
ITEM Ignition REFERENCE VALUE (V)
NAL COLOR Operation or condition
switch
1 L CAN-H -- -- --
TX communication line
9 L/OR ON --
(To combination meter)
SKIA3362E
11 R CAN-L -- -- --
RX communication line
19 R/G ON --
(From combination meter)
SKIA3361E
21 R/W Battery power supply OFF -- Battery voltage
Ignition switch ON or
22 Y/G ON -- Battery voltage
START
Speedometer operated
Vehicle speed signal [When vehicle speed is
26 W ON
(8-pulse) approx. 40 km/h (25
MPH)]
PKIA1935E
Refer to DI-26, "FUEL LEVEL SENSOR
28 W/B Fuel level sensor signal -- --
UNIT CHECK" .
29 B Ground (For power) ON -- Approx. 0
30 B Ground ON -- Approx. 0
Fuel level sensor signal
36 R/B -- -- --
ground
Ignition switch ACC or
46 L/W ACC -- Battery voltage
ON
Meter/Gauges Operation and Odo/Trip Meter AKS000WU
SELF-DIAGNOSIS FUNCTION
q Odo/trip meter segment and A/T indicator segment operation can be checked in self-diagnosis mode.
q Meters/gauges can be checked in self-diagnosis mode.
HOW TO ALTERNATE DIAGNOSIS MODE
1. Turn the ignition switch ON, and switch the odo/trip meter to "trip A" or "trip B".
NOTE:
If the diagnosis function is activated with the trip meter A displayed, the mileage on the trip meter A will
indicate 000.0 miles, but the actual trip mileage will be retained. (Trip B operates the same way).
2. Turn the ignition switch OFF.
3. While pushing the odo/trip meter switch, turn the ignition switch ON again.
4. Check that the trip meter displays "0000.0".
5. Push the odo/trip meter switch at least 3 times within 5 seconds.
DI-12
COMBINATION METERS
6. All the segments on the odo/trip meter and A/T indicator illuminate, and simultaneously the fuel warning
lamp indicator illuminates. At this time, the unified meter control unit is turned to diagnosis mode. A
NOTE:
If any of the segments is not displayed, replace the combination meter.
B
C
D
PKIA1997E E
7. Push the odo/trip meter switch. Each meter/gauge should indi-
cate as shown in the figure while pushing odo/trip meter switch. F
(at this time, the low-fuel warning lamp goes off).
G
H
PKIA1857E
CONSULT-II Function AKS00325
I
Refer to DI-61, "CONSULT-II Function" in "UNIFIED METER AND A/C AMP".
How to Proceed With Trouble Diagnosis AKS000WV J
1. Confirm the symptom or customer complaint.
2. Perform diagnosis according to diagnosis flow. Refer to DI-13, "Diagnosis Flow" .
DI
3. According to the symptom chart, repair or replace the cause of the symptom.
4. Does the meter operate normally? If YES, go to 5. If NO, go to 2.
5. Inspection end. L
Diagnosis Flow AKS000WW
1. CHECK SELF-DIAGNOSIS RESULTS OF UNIFIED METER AND A/C AMP. M
Select "METER A/C AMP" on CONSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer to
DI-61, "CONSULT-II Function" .
Self-diagnosis results content
No malfunction detected>>Go to 2.
Malfunction detected>>Go to DI-16, "Symptom Chart 2" .
2. CHECK WARNING LAMP ILLUMINATION
1. Turn the ignition switch ON.
2. Check that warning lamps (such as MIL and oil pressure warning lamp) illuminate.
Do warning lamps illuminate?
Yes >> GO TO 3.
No >> Check ignition power supply system of combination meter. Refer to DI-15, "Power Supply and
Ground Circuit Check" .
DI-13
COMBINATION METERS
3. CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to DI-12, "SELF-DIAGNOSIS FUNCTION" .
Does self-diagnosis function operate?
Yes >> GO TO 4.
No >> Check battery power supply of combination meter and ground system. Refer to DI-15, "Power
Supply and Ground Circuit Check" .
4. CHECK ODO/TRIP METER OPERATION
Check segment display status of odo/trip meter.
Is the display normal?
Yes >> GO TO 5.
No >> Replace the combination meter.
SEL176W
5. CHECK FUEL WARNING LAMP ILLUMINATION CONFIRMATION
During fuel warning lamp check, confirm illumination of fuel warning lamp.
Condition of odo/trip
Fuel warning lamp
meter switch
Pushed Does not illuminate.
Released Illuminates.
OK or NG
OK >> GO TO 6.
NG >> Replace the combination meter.
6. CHECK COMBINATION METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode.
OK or NG
OK >> Go to DI-16, "Symptom Chart 1" .
NG >> Replace the combination meter.
PKIA1857E
DI-14
COMBINATION METERS
Power Supply and Ground Circuit Check AKS000WX
1. CHECK FUSES A
q Check for blown combination meter and unified meter and A/C amp. fuses.
B
Unit Power source Fuse No.
Combination meter
Battery 19
Unified meter and A/C amp. C
Ignition switch ACC or ON 6
Combination meter
Ignition switch ON or START 14
Ignition switch ACC or ON 10, 11
D
Unified meter and A/C amp.
Ignition switch ON or START 12
OK or NG E
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" . F
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect the combination meter connector and unified meter and A/C amp. connector. G
2. Check voltage between combination meter connector and
ground.
H
Terminals Ignition switch position
(+)
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