INFINITI M35 2007 Factory Service Manual

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UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
DATA MONITOR
Operation Procedure
1. Touch “METER A/C AMP” on “SELECT SYSTEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “MAIN SIG-
NALS” is selected, main items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
X: Applicable MAIN SIGNALS Monitors main signals.
SELECTION FROM MENU Selects and monitors individual signal.
SKIA4957E
Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUDescription
SPEED METER [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is input from ABS
actuator and electric unit (control unit).
SPEED OUTPUT [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is transmitted to
each unit with CAN communication.
TACHO METER [rpm] X X Displays the value of engine speed signal, which is input from ECM.
W TEMP METER [°C] or [°F] X XDisplays the value of engine coolant temperature signal, which is
input from ECM.
FUEL METER [lit.] X XDisplays the value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] or [mile] X XDisplays the value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (control unit), fuel gauge and fuel
consumption from ECM.
FUEL W/L [ON/OFF] X X Displays [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF] X Displays [ON/OFF] condition of malfunction indicator lamp.
AIR PRES W/L [ON/OFF] X Displays [ON/OFF] condition of low tire pressure warning lamp.
SEAT BELT W/L [ON/OFF] X Displays [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Displays [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Displays [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Displays [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Displays [ON/OFF] condition of turn indicator.
FR FOG IND [ON/OFF] X Displays [ON/OFF] condition of front fog indicator.
OIL W/L [ON/OFF] X Displays [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] X Displays [ON/OFF] condition of VDC/TCS OFF indicator lamp.
ABS W/L [ON/OFF] X Displays [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Displays [ON/OFF] condition of brake warning lamp. *

UNIFIED METER AND A/C AMP
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NOTE:
Monitored item that does not match the vehicle is deleted from the display automatically.
*: Monitor keeps indicating “OFF” when brake warning lamp is on by the parking brake operation or low brake fluid level. KEY Y/G W/L [ON/OFF] X Displays [ON/OFF] condition of key warning lamp.
PNP P SW [ON/OFF] X X Displays [ON/OFF] condition of inhibitor switch P range.
M RANGE SW [ON/OFF] X X Displays [ON/OFF] condition of manual mode range switch.
NM RANGE SW [ON/OFF] X XDisplays [ON/OFF] condition of except for manual mode range
switch.
AT SFT UP SW [ON/OFF] X X Displays [ON/OFF] condition of A/T shift-up switch.
AT SFT DWN SW [ON/OFF] X X Displays [ON/OFF] condition of A/T shift-down switch.
AT P MODE SW X Displays [ON/OFF] condition of A/T POWER mode switch.
AT S MODE SW X Displays [ON/OFF] condition of A/T SNOW mode switch.
BRAKE SW [ON/OFF] * X Displays [ON/OFF] condition of brake switch (stop lamp switch).
AT-M IND [ON/OFF] X X Displays [ON/OFF] condition of A/T manual mode indicator.
AT-M GEAR [5-1] X X Displays [5-1] condition of A/T manual mode gear position.
P RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift P range indicator.
R RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift R range indicator.
N RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift N range indicator.
D RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift D range indicator.
AT CHECK W/L [ON/OFF] X Displays [ON/OFF] condition of A/T indicator.
CRUISE IND [ON/OFF] X Displays [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Displays [ON/OFF] condition of SET indicator.
CRUISE W/L [ON/OFF] X Displays [ON/OFF] condition of CRUISE warning lamp.
4WD W/L [ON/OFF] X Displays [ON/OFF] condition of AWD warning lamp.
AFS OFF IND [ON/OFF] X Displays [ON/OFF] condition of AFS OFF indicator.Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUDescription

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UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
Power Supply and Ground Circuit InspectionNKS003UJ
1. CHECK FUSE
Check for blown fuses.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
POWER
SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between unified meter and A/C amp. harness con-
nector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between unified meter and A/C amp. and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between unified meter and A/C amp. harness
connector 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 12
Terminals Ignition switch position
(+)
(–) OFF ACC ON Unified meter
and A/C amp.
connectorTe r m i n a l
M6554
GroundBattery
voltageBattery
voltageBattery
voltage
41 0 VBattery
voltageBattery
voltage
53 0 V 0 VBattery
voltage
PKIB7645E
Unified meter and
A/C amp. connectorTe r m i n a l
GroundContinuity
M6555
Ye s
71
PKIB7646E

UNIFIED METER AND A/C AMP
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DTC [U1000] CAN Communication CircuitNKS003UK
Symptom: Displays “CAN COMM CIRC [U1000]” as a self-diagnosis results of unified meter and A/C amp.
1. CHECK CAN COMMUNICATION
1. Select “SELF-DIAG RESULTS” mode for “METER A/C AMP” with CONSULT-II.
2. Print out CONSULT-II screen.
>> Go to “LAN system”. Refer to LAN-44, "
CAN Diagnostic Support Monitor" .
DTC [B2202] Meter Communication CircuitNKS003UL
Symptom: Displays “METER COMM CIRC [B2202]” as a self-diagnosis results of unified meter and A/C amp.
1. CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: 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
(A) and unified meter and A/C amp. harness connector (B).
4. Check continuity between combination meter harness connector
(A) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
AB
Continuity
Connector Terminal Connector Terminal
M52 15 M64 7 Yes
A
GroundContinuity
Connector Terminal
M52 15 No
PKIB7647E

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UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
3. CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: UNIFIED METER AND A/C AMP.)
1. Check continuity between combination meter harness connector
(A) and unified meter and A/C amp. harness connector (B).
2. Check continuity between combination meter harness connector
(A) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK COMBINATION METER OUTPUT VOLTAGE (TX: UNIFIED METER AND A/C AMP.)
1. Connect combination meter connector.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector
and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace combination meter.
AB
Continuity
Connector Terminal Connector Terminal
M52 16 M64 27 Yes
A
GroundContinuity
Connector Terminal
M52 16 No
PKIB7648E
Terminals
Voltage (Approx.) (+)
(–)
Combination meter
connectorTerminal
M52 15 Ground 5 V
PKIB7649E

UNIFIED METER AND A/C AMP
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5. CHECK COMMUNICATION SIGNAL (TX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Connect unified meter and A/C amp. connector.
3. Turn ignition switch ON.
4. Check voltage signal between combination meter harness con-
nector and ground.
OK or NG
OK >> GO TO 6.
NG >> Replace unified meter and A/C amp.
6. CHECK UNIFIED METER AND A/C AMP OUTPUT VOLTAGE (RX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Turn ignition switch ON.
4. Check voltage between unified meter and A/C amp. harness
connector and ground.
OK or NG
OK >> GO TO 7.
NG >> Replace unified meter and A/C amp.
Terminals
Voltage (Approx.) (+)
(–)
Combination meter
connectorTerminal
M52 15 Ground
PKIB7650E
SKIA3362E
Te r m i n a l s
Voltage (Approx.) (+)
(–)
Unified meter and A/C
amp. connectorTerminal
M64 27 Ground 5 V
PKIB7651E

DI-38
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
7. CHECK COMMUNICATION SIGNAL (RX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Connect combination meter connector.
3. Turn ignition switch ON.
4. Check voltage signal between unified meter and A/C amp. har-
ness connector and ground.
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> Replace combination meter.
DTC [B2205] Vehicle Speed CircuitNKS003UM
Symptom: Displays “VEHICLE SPEED CIRC [B2205]” as a self-diagnosis results of unified meter and A/C
amp.
Preform self-diagnosis of ABS actuator and electric unit (control unit), and repair or replace malfunctioning
parts. Refer to BRC-23, "
CONSULT-II Functions (ABS)" .
Removal and Installation of Unified Meter and A/C Amp. NKS003UN
REMOVAL
1. Remove the audio unit. Refer to AV- 1 2 6 , "Audio Unit" (Without
mobile entertainment system) or AV- 2 7 7 , "
Audio Unit" . (With
mobile entertainment system).
2. Remove the screws (A) 2.
3. Remove the screws (B) 4 and remove the bracket (1).
4. Remove unified meter and A/C amp. (2).
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Unified meter and A/C amp. screws (A) are different from other screws. Never confuse them when
installing.
Terminals
Voltage (Approx.) (+)
(–) Unified meter
and A/C amp.
connectorTerminal
M64 27 Ground
PKIB7652E
SKIA3361E
SKIB4053E

WARNING LAMPS
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WARNING LAMPSPFP:24814
System DescriptionNKS003UO
OIL PRESSURE WARNING LAMP
Oil pressure warning lamp turns ON when reducing engine oil pressure abnormally.

IPDM E/R inputs oil pressure switch signal from oil pressure switch, and transmits the signal to unified
meter and A/C amp. through BCM with CAN communication.

Unified meter and A/C amp. transmits oil pressure switch signal to combination meter with communication
line.

Let the combination meter turn oil pressure warning lamp ON with received oil pressure switch signal.
PKIB7655E

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WARNING LAMPS
Revision: 2007 April2007 M35/M45
Component Parts and Harness Connector LocationNKS003UP
PKIB7653E

WARNING LAMPS
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SchematicNKS003UQ
NOTE:
For the further details, refer to descriptions on each system.
TKWT3426E