2005 INFINITI FX35 Ignition switch

COMBINATION METERS DI-13
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Revision: 2005 July 2005 FX
Terminals and Reference Value for Unified Meter and A/C Amp.AKS005MN
35 — Trip reset switch OFF Trip reset switch is pushed Approx. 0 V
Trip reset switch is released Approx. 5 V
36 — Trip transfer switch OFF Trip transfer switch is pushed Approx. 0 V
Trip transfer switch is released Approx. 5 V
Te r m i n a l
No. Wire
color Item Condition
Reference value
Ignition
switch Operation or condition
Terminal
No. Wire
color Item Condition
Reference value
Ignition
switch Operation or condition
1 L CAN H — — —
9PU TX communication line (To
combination meter) ON —
11 R C A N L — — —
19 L/B RX communication line (From
combination meter) ON —
21 R/W Battery power supply OFF — Battery voltage
22 G/R Ignition switch ON or START ON — Battery voltage
26 R/G Vehicle speed signal
(8-pulse) ON Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)] NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
28 W/B Fuel level sensor signal — — Refer to
DI-25, "
CHECK FUEL
LEVEL SENSOR UNIT" .
29 B Ground (for power) ON — Approx. 0 V
30 B Ground ON — Approx. 0 V
36 B/W Fuel level sensor ground ON — Approx. 0 V
46 L/W Ignition switch ACC or ON ACC — Battery voltage
SKIA3362E
SKIA3361E
PKIA1935E

DI-14
COMBINATION METERS
Revision: 2005 July 2005 FX
Self-Diagnosis Mode of Combination MeterAKS005MO
SELF-DIAGNOSIS FUNCTION

Odo/trip meter segment, A/T indicator segment and ICC system display segment operation can be
checked in self-diagnosis mode.

Meters/gauges can be checked in self-diagnosis mode.
OPERATION PROCEDURE
1. Turn 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 0000.0, but the actual trip mileage will be retained. (Trip B operates the same way.)
2. Turn ignition switch OFF.
3. Turn ignition switch ON while pressing trip transfer switch and trip reset switch at the same time.
4. After ignition switch is turned ON, release trip transfer switch and trip reset switch. (With 7 seconds after the ignition switch is
turned ON.)
5. All the segments on the odo/trip meter, A/T indicator and ICC system display illuminates, and simultaneously the low-fuel
warning lamp indicator illuminates. At this time, the unified meter
control unit is turned to diagnosis mode.
NOTE:
If any of the segments is not displayed, replace combination
meter.
6. Push the trip reset switch. Each meter/gauge should indicate as shown in the figure while pushing trip reset switch. (At this time,
the low-fuel warning lamp goes off.)
CONSULT-II Function (METER A/C AMP)AKS005MP
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
SKIA4817E
SKIA6170E
SKIA4831E

COMBINATION METERS DI-15
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Revision: 2005 July 2005 FX
Trouble DiagnosisAKS005MQ
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-15, "
PRELIMINARY CHECK" .
3. According to the symptom chart, repair or replace the cause of the symptom. Refer to DI-17, "
Symptom
Chart 1" .
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK
1. CHECK SELF-DIAGNOSTIC RESULTS OF UNIFIED METER AND A/C AMP.
Select “METER A/C AMP” on CONSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer to
DI-31, "
CONSULT-II Function (METER A/C AMP)" .
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. (Engine stopped)
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-18,
"Power Supply and Ground Circuit Inspection" .
3. CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to DI-14, "
SELF-DIAGNOSIS FUNCTION" .
Does self-diagnosis function operate?
YES >> GO TO 5.
NO >> GO TO 4.
4. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check power supply and ground circuit of combination meter. Refer to DI-18, "
Power Supply and Ground Cir-
cuit Inspection" .
OK or NG
OK >> Replace combination meter.
NG >> Repair as need.

DI-18
COMBINATION METERS
Revision: 2005 July 2005 FX
Power Supply and Ground Circuit InspectionAKS005MS
1. CHECK FUSE
Check for blown combination meter and unified meter and A/C amp. fuses.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between combination meter harness connector M20 terminals 8 (R/W), 7 (G/Y) and ground.
2. Check voltage between unified meter and A/C amp. harness connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

Harness between combination meter and fuse

Harness between unified meter and A/C amp. and fuse
Unit Power source Fuse No.
Combination meter Battery 19
Unified meter and A/C amp.
Unified meter and A/C amp Ignition switch ACC or ON 10, 11
Combination meter Ignition switch ON or START 14
Unified meter and A/C amp. Ignition switch ON or START 12
Terminals Ignition switch position
(+) (–) OFF ON
Connector Terminal
(Wire color)
M20 8 (R/W)
Ground Battery voltage Battery voltage
7 (G/Y) 0 V Battery voltage
PKIB3569E
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
(Wire color)
M56 21 (R/W)
Ground Battery
voltage Battery
voltage Battery
voltage
22 (G/R) 0 V 0 V Battery
voltage
M57 46 (L/W) 0 V Battery
voltage Battery
voltage
PKIB3570E

COMBINATION METERS DI-19
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Revision: 2005 July 2005 FX
3. CHECK GROUND CIRCUIT
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 terminals 5 (B), 6 (B), 15 (B) and ground.
4. Check continuity between unified meter and A/C amp. harness connector M56 terminals 29 (B), 30 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector. 5 (B) – Ground
: Continuity should exist.
6 (B) – Ground
15 (B) – Ground
SKIA4833E
29 (B) – Ground : Continuity should exist.
30 (B) – Ground
SKIA5202E

DI-20
COMBINATION METERS
Revision: 2005 July 2005 FX
Vehicle Speed Signal InspectionAKS005MV
Symptom: Indication is irregular for the speedometer and odo/trip meter.
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Preform the ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-25, "
CONSULT-II Func-
tions" .
Self
-diagnostic results content
No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
2. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start engine and drive vehicle at approximately 40 km/h (25 MPH).
2. Check voltage signal between unified meter and A/C amp. har- ness connector M56 terminal 26 (R/G) and ground.
OK or NG
OK >> GO TO 3.
NG >>

If monitor indicates “0 V” constantly, repair or replace malfunctioning parts after checking each
unit inputting vehicle speed signal (8 pulse), harness and connector between each unit and uni-
fied meter and A/C amp.

If monitor indicates “5 V” or “12 V” constantly, replace unified meter and A/C amp. Refer to DI-
37, "Removal and Installation of Unified Meter and A/C Amp." .
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 (R/G) and unified meter and A/C amp. harness
connector M56 terminal 26 (R/G).
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector. 26 (R/G) – Ground:
NOTE:
Maximum voltage may be 5 V due
to specifications (connected units).
SKIB0338E
PKIA1935E
1 (R/G) – 26 (R/G) : Continuity should exist.
SKIB0343E

DI-22
COMBINATION METERS
Revision: 2005 July 2005 FX
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-132, "CON-
SULT-II Function (ENGINE)" (for VQ35DE) or EC-822,
"CONSULT-II Function (ENGINE)" (for 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 InspectionAKS005MY
Symptom:

Fuel gauge indication is malfunction.

Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunction.
Fuel level sensor unit

Depending on vehicle position or driving circumstance, the fuel level in the tank various, 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 position or driving circumstance, the fuel in the tank flows and the warning lamp ON
timing may change.
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” with fuel gauge pointer of combination
meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK FUEL LEVEL SENSOR
Check components. Refer to DI-25, "
CHECK FUEL LEVEL SENSOR UNIT" .
OK or NG
OK >> GO TO 3.
NG >> Replace fuel level sensor unit.
SKIA4368E
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

DI-24
COMBINATION METERS
Revision: 2005 July 2005 FX
Odo/Trip Meter and Illumination Control Switch InspectionAKS005N2
Symptom: Illumination control does not operate.
1. CHECK ODO/TRIP METER AND ILLUMINATION CONTROL SWITCH
1. Remove odo/trip meter and illumination control switch. Refer to DI-27, "
Removal and Installation of Odo/
Trip Meter and Illumination Control Switch" .
2. Check continuity between odo/trip meter and illumination control switch harness connector terminals 25, 26, 35 or 36 and 27.
OK or NG
OK >> Replace combination meter.
NG >> Replace odo/trip meter and illumination control switch.
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or VariesAKS005N3
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 PositionAKS005N4
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.
Terminal Condition Continuity
25
27 Illumination control switch (–) is pushed. Yes
Illumination control switch (–) is released. No
26 Illumination control switch (+) is pushed. Yes
Illumination control switch (+) is released. No
36 Trip transfer switch is pushed. Yes
Trip transfer switch is released. No
35 Trip reset switch is pushed. Yes
Trip reset switch is released. No
PKIB3571E