2007 INFINITI FX35 ignition

DI-18
COMBINATION METERS
Revision: 2006 July 2007 FX35/FX45
Power Supply and Ground Circuit InspectionNKS002ZO
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-3, "
POWER
SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector M20
terminals 4, 7, 8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check 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 M20 terminals 5, 6, 15 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Power source Fuse No.
Battery power supply 19 ACC power supply 6
Ignition power supply 14
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
M20 4
Ground 0 V
Battery
voltage Battery
voltage
70 V0 V Battery
voltage
8 Battery
voltage Battery
voltage Battery
voltage
SKIB8525E
5 – Ground
: Continuity should exist.
6 – Ground
15 – Ground
SKIB8526E

DI-20
COMBINATION METERS
Revision: 2006 July 2007 FX35/FX45
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 M20 terminal 1 and unified meter and A/C amp. harness con-
nector M56 terminal 26.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
Engine Speed Signal Inspection NKS002ZQ
Symptom: Tachometer indication is malfunction.
1. CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Select “METER A/C AMP” on CONSULT-II.
3. Using “TACHO METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with tachometer pointer of combina-
tion meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT 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 with that of the
“ENG SPEED”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-118, "CON-
SULT-II Function (ENGINE)" (VQ35DE) or EC-781,
"CONSULT-II Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C Amp." .
1 – 26 : Continuity should exist.
SKIB0343E
PKIA2090E
SKIA4367E

COMBINATION METERS DI-21
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Revision: 2006 July 2007 FX35/FX45
Engine Coolant Temperature Signal InspectionNKS002ZR
Symptom: Water temperature gauge indication is malfunction.
1. CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Select “METER A/C AMP” on CONSULT-II.
3. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with water temperature gauge
pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, print out the CONSULT-II screen.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with that of the “COOLAN TEMP/S”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-118, "CON-
SULT-II Function (ENGINE)" (VQ35DE) or EC-781,
"CONSULT-II Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C
Amp." .
Fuel Level Sensor Signal InspectionNKS002ZS
Symptom:

Fuel gauge indication is malfunctioning.

Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunctions.
Fuel gauge

Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.

If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp

Depending on vehicle posture or driving circumstance, the fuel in the tank flows and the warning lamp ON
timing may change.
Water temperature gauge pointer Reference value of data monitor [ °C ( °F)]
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221) Cold Approx. 50 (122)
PKIA2091E
SKIA4368E

DI-22
COMBINATION METERS
Revision: 2006 July 2007 FX35/FX45
1. CHECK COMBINATION METER INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. Using “FUEL METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with fuel gauge pointer of combination
meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK FUEL LEVEL SENSOR (SUB) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector and fuel level sensor unit (sub) connector.
3. Check continuity between unified meter and A/C amp. harness connector (A) M56 terminal 28 and fuel level sensor unit (sub)
harness connector (B) B40 terminal 1.
4. Check continuity between unified meter and A/C amp. harness connector (A) M56 terminal 28 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK FUEL LEVEL SENSOR (MAIN·SUB) CIRCUIT
1. Disconnect fuel level sensor unit and fuel pump (main) connector.
2. Check continuity between fuel level sensor unit (sub) harness connector (A) B40 terminal 2 and fuel level sensor unit and fuel
pump (main) harness connector (B) B39 terminal 2.
3. Check continuity between fuel level sensor unit (sub) harness connector (A) B40 terminal 2 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. 86
Three quarters Approx. 70 Half Approx. 48
A quarter Approx. 25 Empty Approx. 9
PKIA2088E
28 – 1 : Continuity should exist.
28 – Ground : Continuity should not exist.
SKIB8527E
2 – 2 : Continuity should exist.
2 – Ground : Continuity should not exist.
SKIB8697E

COMBINATION METERS DI-23
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Revision: 2006 July 2007 FX35/FX45
4. CHECK FUEL LEVEL SENSOR (MAIN) CIRCUIT
1. Check continuity between fuel level sensor unit and fuel pump (main) harness connector (A) B39 terminal 5 and unified meter
and A/C amp. harness connector (B) M56 terminal 36.
2. Check continuity between fuel level sensor unit and fuel pump (main) harness connector (A) B39 terminal 5 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK FUEL LEVEL SENSOR
Check components. Refer to DI-24, "
FUEL LEVEL SENSOR UNIT" .
OK or NG
OK >> Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the internal components in the fuel tank. Repair or replace malfunctioning part, if neces-
sary.
NG >> Replace fuel level sensor unit.
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or VariesNKS002ZU
1. CHECK FUEL GAUGE FLUCTUATION
Test drive vehicle to see if gauge fluctuates only during driving or at the instant of stopping.
Does the indication value vary only during driving or at the instant of stopping?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal.
NO >> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble diagnosis.
Fuel Gauge Does Not Move to FULL PositionNKS002ZV
1. QUESTION 1
Does it take a long time for the pointer to move to FULL position?
YES >> GO TO 2.
NO >> GO TO 3.
2. QUESTION 2
Was the vehicle fueled with the ignition switch ON?
YES >> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move to FULL position because of the characteristic of the fuel gauge.
NO >> GO TO 3.
3. QUESTION 3
Is the vehicle parked on an incline?
YES >> Check the fuel level indication with vehicle on a level surface.
NO >> GO TO 4. 5 – 36 : Continuity should exist.
5 – Ground : Continuity should not exist.
SKIB8528E

UNIFIED METER AND A/C AMP DI-31
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Revision: 2006 July 2007 FX35/FX45
CONSULT-II Function (METER A/C AMP)NKS00304
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 “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2. 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 the past. (Displays the number of ignition switch OFF → ON after
detecting malfunction. “SELF-DIAG RESULTS” is erased when exceeding “63”.)
System Diagnosis mode Description Reference
page
METER A/C AMP SELF-DIAG RESULTS
Unified meter and A/C amp. checks the conditions and dis-
plays memorized error. DI-31
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communi-
cation 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] When a unified meter and A/C amp. is not transmitting or receiving CAN communica-
tion signal for 2 seconds or more. DI-34
METER COMM CIRC [B2202] Malfunction is detected in communication of between combination meter and unified
meter and A/C amp. DI-34
VEHICLE SPEED CIRC [B2205] When an erroneous speed signal is input for 1 second.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about
2 seconds). DI-37

UNIFIED METER AND A/C AMP DI-33
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Revision: 2006 July 2007 FX35/FX45
NOTE:
Monitored item that does not match the vehicle is deleted from the display automatically.
*1: It dose not change when fastening or unfastening the passenger seat belt.
*2: Monitor keeps indicating “OFF” when brake warning lamp is on by the parking brake operation or low brake fluid level.
Power Supply and Ground Circuit InspectionNKS003HN
1. CHECK FUSE
Check for blown unified meter and A/C amp. 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" .
KEY R W/L [ON/OFF] X Indicates [ON/OFF] condition of key warning lamp (red).
KEY KNOB W/L [ON/OFF] X Indicates [ON/OFF] condition of key knob warning lamp.
M RANGE SW [ON/OFF] X X Indicates [ON/OFF] condition of manual mode range switch.
NM RANGE SW [ON/OFF] X X Indicates [ON/OFF] condition of except for manual mode range
switch.
AT SFT UP SW [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift-up switch.
AT SFT DWN SW [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift-down switch.
BRAKE SW [ON/OFF] X Indicates [ON/OFF] condition of brake switch (stop lamp switch).
AT-M IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T manual mode indicator.
AT-M GEAR [5-1] X X Indicates [5-1] condition of A/T manual mode gear position.
P RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift P range indicator.
R RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift R range indicator.
N RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift N range indicator.
D RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift D range indicator.
AT CHECK W/L X Indicates [ON/OFF] condition of AT CHECK warning lamp.
CRUISE IND [ON/OFF] X Indicates [ON/OFF] condition of CRUISE indicator lamp.
SET IND [ON/OFF] X Indicates [ON/OFF] condition of SET indicator lamp.
CRUISE W/L [ON/OFF] X Indicates [ON/OFF] condition of ICC warning lamp.
4WD LOCK SW [ON/OFF] X This item is not used for this model. “OFF” is always displayed.
4WD LOCK IND [ON/OFF] X This item is not used for this model. “OFF” is always displayed.
4WD W/L [ON/OFF] X Indicates [ON/OFF] condition of AWD warning lamp.
RR COMB STATE [OK/NG] X Indicates [OK/NG] condition of rear combination lamp circuit. Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Contents
Power source Fuse No.
Battery power supply 19 ACC power supply 10, 11
Ignition power supply 12

DI-34
UNIFIED METER AND A/C AMP
Revision: 2006 July 2007 FX35/FX45
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 M56 terminals 29, 30 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
DTC [U1000] CAN Communication CircuitNKS00305
Symptom: Display “CAN COMM CIRC [U1000]” at the result of self-diagnosis for 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-49, "
CAN System Specification Chart" .
DTC [B2202] Meter Communication CircuitNKS00306
Symptom: Display “METER COMM CIRC [B2202]” at the result of self-diagnosis for 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 terminals.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
M56 21
Ground Battery
voltage Battery
voltage Battery
voltage
22 0 V 0 V Battery
voltage
M57 46 0 V Battery
voltage Battery
voltage
PKIB3570E
29 – Ground : Continuity should exist.
30 – Ground
SKIA5202E