2007 INFINITI M35 turn signal

COMBINATION METERS
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Revision: 2007 April2007 M35/M45
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
(A) and unified meter and A/C amp. harness connector (B).
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
Engine Speed Signal Inspection NKS003U8
Symptom: Tachometer indication is malfunction.
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-II.
2. Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” to that of tachometer of combination
meter.
Is the value in tachometer almost same as the value in the monitor?
OK >> GO TO 2.
NG >> Replace combination meter. (Perform self-diagnosis of
ECM when the value in the monitor indicates 8191.875
rpm. Then repair or replace the malfunction part.)
2. CHECK ECM OUTPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “ENG SPEED” on “DATA MONITOR”, print out the CON-
SULT-II screen when the engine is idling.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” of the idling speed to that of the
“ENG SPEED”.
OK or NG
OK >> Perform self-diagnosis of ECM. Refer to EC-123, "CON-
SULT-II Function (ENGINE)" (for VQ35DE) or EC-826,
"CONSULT-II Function (ENGINE)" (for VK45DE).
NG >> Replace unified meter and A/C amp.
AB
Continuity
Connector Terminal Connector Terminal
M52 1 M64 28 Yes
PKIB7641E
PKIA2090E
SKIA4367E

COMBINATION METERS
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1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. Using “FUEL METER” on “DATA MONITOR”, compare the value
of “DATA MONITOR” to the indication of fuel gauge of combina-
tion meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK FUEL LEVEL SENSOR
1. Turn ignition switch OFF.
2. Check components. Refer to DI-26, "
CHECK FUEL LEVEL SENSOR UNIT" .
OK or NG
OK >> GO TO 3.
NG >> Replace fuel level sensor unit.
3. CHECK FUEL LEVEL SENSOR (SUB) CIRCUIT
1. Disconnect unified meter and A/C amp. connector and fuel level
sensor unit (sub) connector.
2. Check continuity between unified meter and A/C amp. harness
connector (A) and fuel level sensor unit (sub) harness connector
(B).
3. Check continuity between unified meter and A/C amp. harness
connector (A) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
Fuel gauge pointer Reference value of data monitor [lit.]
Full Approx. 74
Three quarters Approx. 61
Half Approx. 42
A quarter Approx. 22
Empty Approx. 8
PKIA2088E
AB
Continuity
Connector Terminal Connector Terminal
M65 42 B52 1 Yes
A
GroundContinuity
Connector Terminal
M65 42 No
PKIB7642E

DI-28
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS003UG
For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated in
the A/C auto amp.
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. inputs necessary information for combination meter from each unit with CAN
communication and so on.

Unified meter and A/C amp. outputs signals with communication line (TX, RX) between unified meter and
A/C amp. and combination meter.

Unified meter and A/C amp. corresponds a CONSULT-II function (self-diagnostic results, CAN diagnostic
support monitor and data monitor).
Input/output Signals
Between unified meter and A/C amp. and combination meter.
Unit Input from combination meter Output to combination meter
Unified meter and A/C amp.

Refuel status signal

Low-fuel warning lamp condition signal

Delivery destination data signal

Combination meter receive error signal

Combination meter specifications signal

Odo date signal

Vehicle speed signal

Turn indicator signal

High beam request signal

Ring illumination request signal

Position light request signal

Front fog lamp request signal

SET indicator lamp signal

CRUISE indicator lamp signal

Engine speed signal

Fuel level sensor signal (resistance value)

Engine coolant temperature signal

CAN communication condition signal of A/T

A/T position indicator signal

Manual mode indicator signal

A/T CHECK warning lamp signal

AWD warning lamp signal

Low tire pressure warning lamp signal

VDC OFF indicator lamp signal

SLIP indicator lamp signal

ABS warning lamp signal

Brake warning lamp signal

Malfunction indicator lamp signal

Oil pressure switch signal

Door switch signal

Buzzer request signal

ICC warning lamp signal

Meter display signal

AFS OFF indicator signal

UNIFIED METER AND A/C AMP
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CONSULT-II Function (METER A/C AMP)NKS003UI
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAG RESULTS
Operation Procedure
1. Touch “METER A/C AMP” on “SELECT SYSTEM” screen.
2. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
3. Self-diagnosis results are displayed.
Display Item List
NOTE:
“TIME” means the following.

0: Means detected malfunction at present. (From malfunction detection to turning ignition switch OFF)

1-63: Means detected malfunction in past. (Displays number of ignition switch OFF → ON after detecting
malfunction. “Self-diagnosis result” is erased when exceeding “63”.)
System Diagnosis mode DescriptionReference
page
METER
A/C AMPSELF-DIAG RESULTSUnified meter and A/C amp. checks the conditions and displays memorized
error.DI-31
CAN DIAG SUPPORT MNTRThe results of transmit/receive diagnosis of CAN communication can be
read.LAN-44
DATA MONITOR Displays unified meter and A/C amp. input data in real time.DI-32
SKIA4956E
Display item [Code] Malfunction is detected when...Reference
page
CAN COMM CIRC
[U1000]Malfunction is detected in CAN communication.
CAUTION:
Even when there is no malfunction on CAN communication system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 sec-
onds) or 10A fuse [No. 19, located in the fuse block (J/B)] is disconnected.DI-35
METER COMM CIRC
[B2202]Malfunction is detected in communication between combination meter and unified meter and
A/C amp.DI-35
VEHICLE SPEED
CIRC
[B2205]When an erroneous speed signal is input for 1 seconds.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be misin-
terpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 seconds). DI-35

DI-32
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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Revision: 2007 April2007 M35/M45
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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Revision: 2007 April2007 M35/M45
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