Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 350Z 2003-2007 Approved Nissan 350Z 2004 di
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DRIVER INFORMATION SYSTEM
K ELECTRICAL
A
DRIVER INFORMATION SYSTEM
SECTION DI B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3 . Communication Line Inspection ............................ 23 . F
Precautions for Supplemental Restraint System Illumination Control Switch Inspection ................... 25 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Fuel Gauge Pointer Fluctuates, Indicator Wrong
SIONER" ................................................................. 3
. Value or Varies ...................................................... 26
. G
Precautions for Battery Service ............................... 3 . Fuel Gauge Does Not Move to FULL Position ...... 26 .
Wiring Diagrams and Trouble Diagnosis ................. 3 . Electrical Components Inspection ......................... 27 .
COMBINATION METERS .......................................... 4 . FUEL LEVEL SENSOR UNIT CHECK ............... 27 .
H
System Description ................................................. 4 . Removal and Installation for Combination Meter ... 28
UNIFIED METER CONTROL UNIT ..................... 4 . REMOVAL .......................................................... 28.
UNIFIED METER AND A/C AMP. ........................ 4 . INSTALLATION .................................................. 28 .
HOW TO CHANGE THE DISPLAY FOR ODO/ Disassembly and Assembly for Combination Meter 28 ... I
TRIP METER ....................................................... 4 . DISASSEMBLY .................................................. 28 .
POWER SUPPLY AND GROUND CIRCUIT ....... 5 . ASSEMBLY ........................................................ 29 .
WATER TEMPERATURE GAUGE ....................... 5 . TRIPLE METERS ..................................................... 30 . J
TACHOMETER .................................................... 5 . System Description ................................................ 30 .
FUEL GAUGE ...................................................... 5 . TRIPLE METER ................................................. 30 .
SPEEDOMETER .................................................. 5 . POWER SUPPLY AND GROUND CIRCUIT ...... 30 .
DI
Component Parts and Harness Connector Location 6 ..... TRIP COMPUTER .............................................. 30 .
Combination Meter .................................................. 7 . OIL PRESSURE GAUGE ................................... 33 .
CHECK ................................................................. 7
. VOLTMETER ...................................................... 33 .
Circuit Diagram ....................................................... 8
. Schematic .............................................................. 34
. L
Wiring Diagram -- METER -- ................................. 9 . Wiring Diagram -- 3METER -- ............................. 35 .
Terminals and Reference Value for Combination Terminals and Reference Value for Triple Meter ... 39
Meter ......................................................................11
. Terminals and Reference Value for Combination M
Terminals and Reference Value for Unified Meter Meter ..................................................................... 40
.
and A/C Amp. ........................................................ 12. Terminals and Reference Value for Unified Meter
Meter/Gauges Operation and Odo/Trip Meter ....... 13 . and A/C Amp. ........................................................ 41.
SELF-DIAGNOSIS FUNCTION ......................... 13 . Meter/Gauges Operation and Trip Computer ........ 42 .
HOW TO ALTERNATE DIAGNOSIS MODE ...... 13 . SELF-DIAGNOSIS FUNCTION .......................... 42 .
CONSULT-II Function ........................................... 13 . HOW TO ALTERNATE DIAGNOSIS MODE ...... 42 .
How to Proceed with Trouble Diagnosis ............... 14 . CONSULT-II Function ............................................ 42 .
Diagnosis Flow ...................................................... 14. How to Proceed With Trouble Diagnosis ............... 43 .
Power Supply and Ground Circuit Inspection ....... 15 . Diagnosis Flow ...................................................... 43.
Symptom Chart 1 .................................................. 17 . Power Supply and Ground Circuit Inspection ........ 44 .
Symptom Chart 2 .................................................. 17 . Symptom Chart 1 ................................................... 46 .
Vehicle Speed Signal Inspection ........................... 18 . Symptom Chart 2 ................................................... 47 .
Engine Speed Signal Inspection ........................... 19 . Vehicle Speed Signal Inspection ........................... 47 .
Engine Coolant Temperature Signal Inspection .... 20 . Fuel Consumption Monitor Signal Inspection ........ 47 .
Fuel Level Sensor Signal Inspection ..................... 21 . Oil Pressure Sensor Inspection ............................. 48 .
CAN Communication System Inspection .............. 22 . Communication Line Inspection ............................ 50 .
Revision: 2004 December DI-1 2004.5 350Z
Trip Computer Switch Inspection ........................... 52 . LIGHT WARNING CHIME ..................................78 .
Removal and Installation of Triple Meters ............. 53 . SEAT BELT WARNING CHIME ..........................78 .
REMOVAL .......................................................... 53 . CAN Communication System Description .............79 .
INSTALLATION ................................................... 53 . CAN Communication Unit ......................................79 .
Disassembly and Assembly for Triple Meters ........ 53 . Schematic ..............................................................80 .
DISASSEMBLY .................................................. 53 . Wiring Diagram -- CHIME -- ................................81 .
ASSEMBLY ........................................................ 53 . Terminals and Reference Value for BCM ...............84 .
UNIFIED METER AND A/C AMP ............................. 54 . Terminals and Reference Value for Unified Meter
System Description ................................................ 54 . and A/C Amp. .........................................................85 .
INPUT/OUTPUT SIGNALS ................................ 54 . Terminals and Reference Value for Combination
FAIL-SAFE .......................................................... 55
. Meter ......................................................................86
.
CAN Communication System Description ............. 56 . How to Proceed With Trouble Diagnosis ...............86 .
CAN Communication Unit ...................................... 56 . Preliminary Check ..................................................87 .
Schematic .............................................................. 57
. INSPECTION FOR POWER SUPPLY AND
CONSULT-II Function ............................................ 58 . GROUND CIRCUIT ............................................87 .
CONSULT-II BASIC OPERATION ...................... 58 . CONSULT-II Function ............................................87 .
SELF-DIAGNOSIS RESULTS ............................ 59 . DIAGNOSTIC ITEMS DESCRIPTION ................87 .
DATA MONITOR ................................................. 60 . CONSULT-II BASIC OPERATION PROCEDURE
Removal and Installation of Unified Meter and A/C ...88
Amp. ...................................................................... 61
. DATA MONITOR .................................................88 .
REMOVAL .......................................................... 61 . ACTIVE TEST .....................................................89 .
INSTALLATION ................................................... 61 . SELF-DIAGNOSTIC RESULTS ..........................89 .
WARNING LAMPS ................................................... 62 . All Warnings Are Not Operated ..............................90 .
Schematic .............................................................. 62
. Key Warning Chime and Light Warning Chime Does
Wiring Diagram -- WARN -- ................................. 63 . Not Operate (Seat Belt Warning Chime Does Oper-
Oil Pressure Warning Lamp Stays Off (Ignition ate) .........................................................................91
.
Switch ON) or Stays On (Oil Pressure Is Normal)... 71 Key Warning Chime Does Not Operate .................92 .
A/T INDICATOR ....................................................... 74 . Light Warning Chime Does Not Operate ................94 .
Wiring Diagram -- AT/IND -- ................................ 74 . Seat Belt Warning Chime Does Not Operate .........94 .
A/T Indicator Is Malfunction ................................... 76 . CLOCK .....................................................................96
.
WARNING CHIME .................................................... 77 . Wiring Diagram -- CLOCK -- ................................96 .
Component Parts and Harness Connector Location 77 ... Description .............................................................97.
System Description ................................................ 77 . Adjusting The Time ................................................97 .
FUNCTION ......................................................... 77 . RESETTING .......................................................97 .
IGNITION KEY WARNING CHIME ..................... 78 .
Revision: 2004 December DI-2 2004.5 350Z
PRECAUTIONS
PRECAUTIONS 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 harnesses or
harness connectors.
G
Precautions for Battery Service AKS00AVA
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the H
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
I
Wiring Diagrams and Trouble Diagnosis AKS000WM
When you read wiring diagrams, refer to the following:
q Refer to GI-15, "How to Read Wiring Diagrams" . J
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following:
q Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" . DI
q Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" .
L
M
Revision: 2004 December DI-3 2004.5 350Z
COMBINATION METERS
COMBINATION METERS PFP:24814
System Description AKS0093R
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 For trip meter, adopted twin trip meter which can integrate two modes.*
*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. 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 illumination control switch lighting
are turned off.
SKIA7096E
UNIFIED METER AND A/C AMP.
Refer to DI-54, "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 (The same way for trip B).
Revision: 2004 December DI-4 2004.5 350Z
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
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 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 through body grounds M30 and M66
q to unified meter and A/C amp. terminals 29 and 30
q through body grounds M30 and M66. H
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
ECM provides an engine coolant temperature signal to unified meter and A/C amp. with CAN communication I
line. Unified meter and A/C amp. provides an engine coolant temperature signal to combination meter for
water temperature gauge with communication line between unified meter and A/C amp. and combination
meter. J
TACHOMETER
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 DI
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.
L
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal supplied
M
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
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. After
unified meter and A/C amp. received the vehicle speed signal, it changes the signal to 8 pulse signal to the
combination meter for speedometer.
Revision: 2004 December DI-5 2004.5 350Z
COMBINATION METERS
Component Parts and Harness Connector Location AKS0093S
SKIA8499E
Revision: 2004 December DI-6 2004.5 350Z
COMBINATION METERS
Combination Meter AKS0093T
CHECK A
B
C
D
E
F
G
H
I
J
DI
L
M
SKIA8500E
Revision: 2004 December DI-7 2004.5 350Z
COMBINATION METERS
Circuit Diagram AKS0093U
TKWT1624E
Revision: 2004 December DI-8 2004.5 350Z
COMBINATION METERS
Wiring Diagram -- METER -- AKS0093V
A
B
C
D
E
F
G
H
I
J
DI
L
M
TKWT1752E
Revision: 2004 December DI-9 2004.5 350Z
COMBINATION METERS
TKWT0482E
Revision: 2004 December DI-10 2004.5 350Z
COMBINATION METERS
Terminals and Reference Value for Combination Meter AKS00962
A
Measuring condition
Terminal Wire
Item Ignition Reference value (V)
No. color Operation or condition
switch
B
10
11 B Ground ON -- Approx. 0
12 C
14 LG Ignition switch ACC or ON ACC -- Battery voltage
When brightness level is midway
D
Lighting switch ON, then
operate the illumination
18 R/Y Illumination signal ON control switch. E
PKIA3771E
F
Lighting switch OFF Approx. 0
NOTE:
Maximum voltage may be 5V due to
specifications (connected units).
G
Speedometer operated.
Vehicle speed signal
20 W ON [When vehicle speed is
(8-pulse) H
approx. 40km/h (25MPH)]
PKIA1935E
I
J
TX communication line
21 R/G ON --
(To unified meter and A/C amp.)
DI
SKIA3361E
L
RX communication line
22 L/OR (From unified meter and A/C ON --
amp.) M
SKIA3362E
23 G/Y Ignition switch ON or START ON -- Battery voltage
24 R/W Battery power supply OFF -- Battery voltage
Revision: 2004 December DI-11 2004.5 350Z
COMBINATION METERS
Terminals and Reference Value for Unified Meter and A/C Amp. AKS0093X
Measuring condition
Terminal Wire
Item Ignition Reference value (V)
No. color Operation or condition
switch
1 L CAN H -- -- --
TX communication line
9 L/OR ON --
(To combination meter)
SKIA3362E
11 P CAN L -- -- --
RX communication line
19 R/G ON --
(From combination meter)
SKIA3361E
21 R/W Battery power supply OFF -- Battery voltage
22 Y/G Ignition switch ON or START ON -- Battery voltage
NOTE:
Maximum voltage may be 5V due
to specifications (connected units).
Speedometer operated.
26 W Vehicle speed signal (8-pulse) ON [When vehicle speed is
approx. 40km/h (25MPH)]
PKIA1935E
Refer to DI-27, "FUEL LEVEL
28 W/B Fuel level sensor signal -- --
SENSOR UNIT CHECK" .
29 B Ground (For power) ON -- Approx. 0
30 B Ground ON -- Approx. 0
36 R/B Fuel level sensor ground ON -- Approx. 0
46 L/W Ignition switch ACC or ON ACC -- Battery voltage
Revision: 2004 December DI-12 2004.5 350Z
COMBINATION METERS
Meter/Gauges Operation and Odo/Trip Meter AKS0093Y
SELF-DIAGNOSIS FUNCTION A
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.
B
HOW TO ALTERNATE DIAGNOSIS MODE
1. Turn ignition switch ON, and switch the odo/trip meter to "trip A" or "trip B".
NOTE: C
If the diagnosis function is activated with the trip meter A displayed, the mileage on the trip meter A will
indicate 0000.0, but the actual trip mileage will be retained. (The same way for trip B.)
2. Turn ignition switch OFF.
D
3. While pushing the odo/trip meter switch, turn ignition switch ON again.
4. Confirm that the trip meter displays "0000.0".
5. Push the odo/trip meter switch at least 3 times. (Within 7 seconds after the ignition switch is turned ON.) E
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.
F
G
H
PKIA1997E I
7. Push the odo/trip meter switch. Each meter/gauge should indi-
cate as shown in the figure while pushing odo/trip meter switch.
(At this time, the low-fuel warning lamp goes off). J
DI
L
PKIA1857E
CONSULT-II Function AKS0093Z M
Refer to DI-58, "CONSULT-II Function" in "UNIFIED METER AND A/C AMP".
Revision: 2004 December DI-13 2004.5 350Z
COMBINATION METERS
How to Proceed with Trouble Diagnosis AKS00940
1. Confirm the symptom or customer complaint.
2. Perform diagnosis according to diagnosis flow. Refer to DI-14, "Diagnosis Flow" .
3. According to the symptom chart, repair or replace the cause of the symptom.
4. Does the meter operate normally? If so, go to 5. If not, go to 2.
5. INSPECTION END
Diagnosis Flow AKS00941
1. CHECK SELF-DIAGNOSTIC RESULTS OF UNIFIED METER AND A/C AMP.
Select "METER A/C AMP" on CONSULT-II, and then perform self-diagnosis of unified meter and A/C amp.
Refer to DI-58, "CONSULT-II Function" .
Self-diagnostic results content
No malfunction detected>>GO TO 2.
Malfunction detected>> Go to DI-17, "Symptom Chart 2" .
2. CHECK WARNING LAMP ILLUMINATION
Turn ignition switch ON.
Do warning lamps (such as malfunction indicator lamp and oil pressure warning lamp) illuminate?
YES >> GO TO 3.
NO >> Check power supply circuit of combination meter when ignition switch is ON. Refer to DI-15,
"Power Supply and Ground Circuit Inspection" .
3. CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to DI-13, "HOW TO ALTERNATE DIAGNOSIS MODE" .
Does self-diagnosis function operate?
YES >> GO TO 4.
NO >> Check battery power supply circuit and ground circuit of combination meter. Refer to DI-15,
"Power Supply and Ground Circuit Inspection" .
4. CHECK ODO/TRIP METER OPERATION
Check segment display status of odo/trip meter.
Is the display normal?
YES >> GO TO 5.
NO >> Replace combination meter.
SEL176W
5. CHECK FUEL WARNING LAMP ILLUMINATION
While checking fuel warning lamp, confirm illumination of fuel warning lamp.
Condition of odo/trip meter switch Fuel warning lamp
Pushed Does not illuminate.
Released Illuminates.
OK or NG
OK >> GO TO 6.
NG >> Replace combination meter.
Revision: 2004 December DI-14 2004.5 350Z
COMBINATION METERS
6. CHECK COMBINATION METER CIRCUIT A
Check indication of each meter/gauge in self-diagnosis mode.
OK or NG
OK >> Go to DI-17, "Symptom Chart 1" . B
NG >> Replace combination meter.
C
D
PKIA1857E
Power Supply and Ground Circuit Inspection AKS00942
E
1. CHECK FUSE
Check for blown combination meter and unified meter and A/C amp. fuses.
F
Unit Power source Fuse No.
Combination meter
Battery 19
Unified meter and A/C amp. G
Ignition switch ACC or ON 6
Combination meter
Ignition switch ON or START 14
H
Ignition switch ACC or ON 10, 11
Unified meter and A/C amp.
Ignition switch ON or START 12
OK or NG I
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" . J
DI
L
M
Revision: 2004 December DI-15 2004.5 350Z
COMBINATION METERS
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect combination meter connector and unified meter and A/C amp. connector.
2. Check voltage between combination meter harness connector
terminals and ground.
Terminals Ignition switch position
(+)
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