Infiniti M45 (Y34). Manual - part 292

COMBINATION METERS

DI-13

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6.

All the segments on the odo/trip meter, A/T indicator and ICC system display illuminate, and simulta-
neously the low-fuel warning lamp indicator illuminate. At this time, the unified control meter is turned to
diagnosis mode.

NOTE:
If any of the segments is not displayed, replace combination meter.

7.

Push the odo/trip meter switch. Indication of each meter/gauge
should be as shown in the right during pushing odo/trip meter
switch if there is no malfunctioning. (at this time, the low-fuel
warning lamp goes off).

How to Proceed with Trouble Diagnosis

AKS002VG

1.

Confirm the symptom or customer complaint.

2.

Perform diagnosis according to diagnosis flow. Refer to 

DI-13, "Diagnosis Flow"

 .

3.

According to the trouble diagnosis chart, repair or replace the cause of the trouble symptom. Refer to 

DI-

15, "Trouble Diagnosis Chart by Symptom"

 .

4.

Does the meter operate normally? If so, go to 5. If not, go to 2.

5.

Inspection end.

Diagnosis Flow

AKS002VH

1. 

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 2.

NO

>> Check ignition power supply system of combination meter. Refer to 

DI-14, "Power Supply and

Ground Circuit Inspection"

 .

2. 

CHECK SELF-DIAGNOSIS OPERATION

Perform combination meter self-diagnosis. Refer to 

DI-12, "SELF–DIAGNOSIS FUNCTION"

 .

Does self-diagnosis function operate?

YES

>> GO TO 3.

NO

>> Check battery power supply of combination meter and ground system. Refer to 

DI-14, "Power

Supply and Ground Circuit Inspection"

 .

MKIB0204E

SKIA2097E

DI-14

COMBINATION METERS

3. 

CHECK ODO/TRIP METER OPERATION

Check segment display status of odo/trip meter. Refer to 

DI-12,

"SELF–DIAGNOSIS FUNCTION"

 .

Is the display normal?

YES

>> GO TO 4.

NO

>> Replace combination meter.

4. 

CHECK FUEL WARNING LAMP ILLUMINATION CONFIRMATION

During fuel warning lamp check, confirm illumination of fuel warning lamp.

OK or NG

OK

>> GO TO 5.

NG

>> Replace combination meter.

5. 

CHECK COMBINATION METER CIRCUIT

Check indication of each meter/gauge in self-diagnosis mode. Refer
to 

DI-12, "SELF–DIAGNOSIS FUNCTION"

 .

OK or NG

OK

>> Go to diagnosis results. Refer to 

DI-15, "DIAGNOSIS

RESULTS"

 .

NG

>> Replace combination meter.

Power Supply and Ground Circuit Inspection

AKS002HY

1. 

CHECK FUSES

Check that any of the fuses in combination meter is blown.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to 

PG-2,

"POWER SUPPLY ROUTING"

 .

SEL176W

Condition of odo/trip meter switch

Fuel warning lamp

Pushed

Does not illuminate.

Released

Illuminates.

SKIA2097E

Unit

Power source

Fuse No.

Combination meter

Battery 6

Ignition switch ON or START 

9

Ignition switch ACC or ON

21

COMBINATION METERS

DI-15

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2. 

CHECK POWER SUPPLY CIRCUIT

1.

Disconnect combination meter connector.

2.

Check voltage between combination meter harness connector
terminals and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between combination meter and fuse.

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between combination meter harness connector
M41 terminals 20 (B), 33 (B) and ground.

OK or NG

OK

>> Inspection end.

NG

>> Repair harness or connector.

Trouble Diagnosis Chart by Symptom

AKS002VL

DIAGNOSIS RESULTS

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

(Wire color)

M41

28 (L/OR)

Ground

0V

Battery 
voltage

Battery 
voltage

39 (Y/G)

Battery 
voltage

Battery

 voltage

Battery 
voltage

40 (G)

0V

0V

Battery 
voltage

M42

42 (G)

SKIA3422E

Continuity should exist.

SKIA3423E

Trouble phenomenon

Possible cause

Tachometer indication is malfunction.

Refer to 

DI-16, "Engine Speed Signal Inspection"

 .

Water temperature gauge indication is malfunction.

Refer to 

DI-16, "Water Temperature Signal Inspection"

 .

Indication is irregular for the speedometer and odo/trip meter.

Refer to

DI-16, "Vehicle Speed Signal Inspection"

 .

Fuel gauge indication is malfunction.

Refer to 

DI-16, "Fuel Level Sensor Signal Inspection"

 .

Fuel warning lamp indication is irregular.

Indications are irregular for more than one gauge.

Replace combination meter.

A/T position indicator is malfunction.

Refer to 

DI-45, "A/T Indicator Does Not Illuminate"

 .

ICC system display does not illuminate.

Refer to 

ACS-58, "TROUBLE DIAGNOSIS — GENERAL 

DESCRIPTION"

 .

DI-16

COMBINATION METERS

Engine Speed Signal Inspection

AKS002VI

1. 

CHECK ECM SELF-DIAGNOSIS 

Perform ECM self-diagnosis. Refer to 

EC-108, "CONSULT-II Function (ENGINE)"

 .

OK or NG

OK

>> Replace combination meter.

NG

>> Perform “Diagnostic procedure” displayed DTC.

Water Temperature Signal Inspection

AKS002VJ

1. 

CHECK ECM SELF-DIAGNOSIS

Preform the ECM self-diagnosis. Refer to 

EC-108, "CONSULT-II Function (ENGINE)"

 . 

OK or NG

OK

>> Replace combination meter.

NG

>> Perform “Diagnostic procedure” displayed DTC.

Vehicle Speed Signal Inspection

AKS002VK

1. 

CHECK VDC/TCS/ABS CONTROL UNIT SELF-DIAGNOSIS

Perform VDC/TCS/ABS control unit self-diagnosis. Refer to 

AT-89, "CONSULT-II"

 .

OK or NG

OK

>> Replace combination meter.

NG

>> Perform “Diagnostic procedure” displayed self-diagnosis results.

Fuel Level Sensor Signal Inspection

AKS002I3

FUEL LEVEL SENSOR UNIT

The following symptoms do not indicate a malfunction.

●

Depending on vehicle posture 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.

●

If vehicle is tilted when the ignition switch is turned ON, fuel in the tank may flow to one direction resulting
in a change in the reading.

LOW-FUEL WARNING LAMP

Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the warning lamp
ON timing may be changed.

1. 

CHECK HARNESS CONNECTOR

Check combination meter, fuel level sensor unit and terminals (meter-side, module-side, lead-side, and har-
ness-side) for poor connection and bend.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.