Infiniti Q45. Manual — part 287

COMBINATION METERS

DI-15

C

D

E

F

G

H

I

J

L

M

A

B

DI

Terminals and Reference Value for Combination Meter

NKS001B6

Terminal

No.

Wire

color

Item

Condition

Reference value

(Approx.)

Ignition

switch

Operation or condition

1

L/OR

ACC power supply

ACC

–

Battery voltage

15

L

CAN-H

–

–

–

16

P

CAN-L

–

–

–

17

OR/L

Vehicle speed signal
output (8-pulse)

ON

Speedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)]

18

P/L

Vehicle speed signal
output (2-pulse)

ON

Speedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)].

29

B/Y

Fuel level sensor ground

–

–

–

30

R/L

Fuel level senor signal

ON

–

Refer to

DI-22, "CHECK FUEL

LEVEL SENSOR UNIT"

.

57

Y/G

Battery power supply

OFF

–

Battery voltage

59

G

Ignition power supply

ON

–

Battery voltage

60

B

Ground

ON

–

0 V

61

62

PKIA1935E

ELF1080D

DI-16

COMBINATION METERS

Self-Diagnosis Mode of Combination Meter

NKS001B7

SELF–DIAGNOSIS MODE FUNCTION

●

Odo/trip meter segment, A/T indicator segment and ICC system display segment 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 displayed, the mileage on the trip meter is reset.

2.

Turn ignition switch OFF.

3.

While pushing the odo/trip meter switch, turn ignition switch ON again.

4.

Make sure that the trip meter displays “0000.0”.

5.

Push the odo/trip meter switch at least 3 times. (Within 7 seconds after the ignition switch is turned ON.)

6.

All the segments on the odo/trip meter, A/T indicator, ICC system display.
And simultaneously the low-fuel warning lamp illuminate.
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.

●

The following lamps may illuminate in self-diagnosis mode:
Malfunction indicator lamp, ASCD indicator lamp (SET lamp, CRUSE lamp), A/T CHECK indicator
lamp, ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp.

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).

NOTE:

●

If any of meter/gauge is not sweeped, replace combination
meter.

●

The figure is reference.

Trouble Diagnosis

NKS001B8

HOW TO PROCEED WITH TROUBLE DIAGNOSIS

1.

Confirm the symptom or customer complaint.

2.

Perform the preliminary check. Refer to

DI-17, "PRELIMINARY CHECK"

.

3.

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

DI-17,

"SYMPTOM CHART"

.

4.

Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.

5.

INSPECTION END

PKIC4880E

SKIB0662E

COMBINATION METERS

DI-17

C

D

E

F

G

H

I

J

L

M

A

B

DI

PRELIMINARY CHECK

1.

CHECK COMBINATION METER (SELF-DIAGNOSIS MODE)

Activate self-diagnosis mode of combination meter. Refer to

DI-16, "OPERATION PROCEDURE"

.

Does self-diagnosis mode operate normally?

OK

>> INSPECTION END

NG

>> GO TO 2.

2.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit. Refer to

DI-17, "Power Supply and Ground Circuit Inspection"

.

OK or NG

OK

>> Replace combination meter.

NG

>> Repair power supply and ground circuit of combination meter.

SYMPTOM CHART

Power Supply and Ground Circuit Inspection

NKS001B9

1.

CHECK FUSE

Check for blown combination meter 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-

2, "POWER SUPPLY ROUTING"

.

Symptom

Possible cause

Speedometer and odo/trip meter indication is irregular.

Refer to

DI-18, "Vehicle Speed Signal Inspection"

.

Tachometer indication is malfunction.

Refer to

DI-18, "Engine Speed Signal Inspection"

.

Water temperature gauge indication is malfunction.

Refer to

DI-19, "Engine Coolant Temperature Signal Inspection"

.

Low-fuel warning lamp indication is irregular.

Refer to

DI-20, "Fuel Level Sensor Signal Inspection"

.

Fuel gauge indication is malfunction.

ICC system display is malfunction.

Refer to

DI-22, "ICC System Display Does Not Illuminate"

.

A/T indicator is malfunction.

Refer to

DI-50, "A/T Indicator Does Not Illuminate"

.

Unit

Power source

Fuse No.

Combination meter

Battery

6

Ignition switch ON or START

9

Ignition switch ACC or ON

21

DI-18

COMBINATION METERS

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between combination meter harness connector termi-
nals 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
M43 terminals 60, 61, 62 and ground.

OK or NG

OK

>> Power supply and ground circuit are OK.

NG

>> Check ground harness.

Vehicle Speed Signal Inspection

NKS001BA

1.

CHECK VDC/TCS/ABS CONTROL UNIT SYSTEM

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

BRC-23, "CONSULT-II Functions (VDC)"

.

OK or NG

OK

>> Replace combination meter.

NG

>> Check VDC/TCS/ABS control unit.

Engine Speed Signal Inspection

NKS001BB

1.

CHECK VISUAL

At the engine start, the pointer on the tachometer fluctuates.

Is the fluctuation acceptable?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK ENGINE SPEED

Compare the engine speed and the values indicated in tachometer.

Does the engine speed correspond to the speed indicated?

YES

>> Tachometer is OK.

NO

>> Replace combination meter.

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

M43

57

Ground

Battery
voltage

Battery

voltage

Battery
voltage

M41

1

0 V

Battery
voltage

Battery
voltage

M43

59

0 V

0 V

Battery
voltage

SKIB0663E

60 – Ground

: Continuity should

61 – Ground

62 – Ground

SKIB0664E