Infiniti F50. Manual — part 294
COMBINATION METERS
DI-19
C
D
E
F
G
H
I
J
L
M
A
B
DI
Work Flow
EKS001C6
1.
CHECK WARNING LAMPS
1.
Turn ignition switch ON.
2.
Warning lamps should illuminate (seat belt warning or door warning etc.).
Do warning lamps illuminate?
YES
>> GO TO 2.
NO
>> Power supply and ground check. Refer to
DI-21, "Power Supply and Ground Circuit Check"
2.
CHECK INDICATOR LAMPS
Meter/gauges/A/T indicator should indicate.
Do indicators indicate?
YES
>> GO TO 3.
NO
>> Fluorescent lamp check. Refer to
DI-22, "Fluorescent Lamp Check"
3.
CHECK SELF-DIAGNOSIS MODE OPERATION
Preform self-diagnosis mode. Refer to
DI-18, "Meter/Gauges Operation, Odo/Trip Meter, A/T Indicator and
Can diagnosis mode be activated?
YES
>> GO TO 4.
NO
>> Replace unified meter control unit (sub).
4.
CHECK SEGMENTS
Check odo/trip meter segment, A/T indicator or ICC system display segment.
Do all segments illuminate?
YES
>> GO TO 5.
NO
>>
●
Check A/T indicator. Refer to
DI-55, "A/T Indicator Does Not Illuminate"
●
Check ICC system display. Refer to
DI-26, "ICC System Display Does Not Illuminate"
.
●
Replace unified meter control unit (sub) and meter and gauge assembly.
5.
CHECK SELF-DIAGNOSIS MODE
Check meter/gauge operation in self-diagnosis mode. Refer to
18, "Meter/Gauges Operation, Odo/Trip Meter, A/T Indicator and ICC
System Display"
OK or NG
OK
>> Symptom chart 2.
NG
>> Symptom chart 1.
SKIA3720E
SKIA0484E
DI-20
COMBINATION METERS
Trouble Diagnoses
EKS00101
SYMPTOM CHART 1 (MALFUNCTION INDICATED DIAGNOSIS MODE)
SYMPTOM CHART 2 (NO MALFUNCTION INDICATED IN DIAGNOSIS MODE)
Symptom
Possible cause
Repair procedure
Speedometer or odo/trip
meter indicate(s) malfunction
in diagnosis mode.
●
Meter and gauge assembly
●
Unified meter control unit
●
Replace unified meter control unit (main and sub) and meter and
gauge assembly.
Multiple meter/gauge indi-
cate malfunction in diagnosis
mode.
●
Harness connector condition
●
Unified meter control unit
●
Check connector conditions in combination meter.
●
Replace unified meter control unit (sub).
One of speedometer/
tachometer/fuel gauge/ water
temp. gauge is malfunction-
ing.
●
Meter/Gauge
●
Unified meter control unit
●
Replace meter and gauge assembly and replace unified meter
control unit (sub).
Symptom
Possible case
Repair order
Speedometer and odo/trip
meter are malfunctioning.
1. Signal
–
Speedometer, odo/trip meter
2. Harness connector condition
3. Unified meter control unit
1. Check vehicle speed signal.
INSPECTION/VEHICLE SPEED SIGNAL (Refer to
"Inspection/Vehicle Speed Signal"
2. Check connector conditions in combination meter.
3. Replace unified meter control unit (sub).
Multiple meter/gauge are mal-
functioning, (except for
speedometer, odo/trip meter)
1. Harness connector condition
2. Unified meter control unit
1. Check connector conditions in combination meter.
2. Replace unified meter control unit.
One of tachometer/fuel
gauge/ water temp. gauge is
malfunctioning.
1. Signal
–
Tachometer
–
Fuel gauge
–
Water temp.gauge
2. Harness connector condition
3. Unified meter control unit
1. Check signal for malfunctioning meter/gauge.
–
INSPECTION/ENGINE SPEED SIGNAL (Refer to
"Inspection/Engine Speed Signal"
–
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
"Inspection/Fuel Level Sensor Unit"
)
–
INSPECTION/ENGINE COOLANT TEMPERATURE SENSOR.
(Refer to
DI-23, "Inspection/Water Temperature Gauge"
2. Check connector conditions in combination meter.
3. Replace unified meter control unit (sub).
COMBINATION METERS
DI-21
C
D
E
F
G
H
I
J
L
M
A
B
DI
Power Supply and Ground Circuit Check
EKS00102
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 malfunction before installing new fuse. Refer to
2.
CHECK POWER SUPPLY CIRCUIT
1.
Disconnect the combination meter connector.
2.
Check voltage between combination meter 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
Check continuity between combination meter and ground.
OK or NG
OK
>> Inspection end.
NG
>> Check ground harness.
Unit
Power source
Fuse No.
Combination meter
Battery 6
Ignition switch (ON)
9
Ignition switch (ACC)
21
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
ON
Connector
Terminal
(Wire color)
M41
1(L/OR)
Ground
0V
Battery
voltage
Battery
voltage
M43
57(Y/G)
Battery
voltage
Battery
voltage
Battery
voltage
M43
59(G)
0V
0V
Battery
voltage
SKIA0476E
Terminals
Continuity
(+)
(–)
Connector
Terminal
(Wire color)
M43
60 (B)
Ground
Yes
61 (B)
SKIA3721E
DI-22
COMBINATION METERS
Fluorescent Lamp Check
EKS001C7
1.
CHECK FLEXIBLE PRINT CIRCUIT (FPC) CONNECTOR
1.
Disconnect fluorescent lamp harness connector.
2.
Check terminals for damage or loose connection. Then reconnect connectors.
3.
Check FPC connector for damage or loose connection. Then reconnect connector.
OK or NG
OK
>> Replace unified meter control unit (main and sub) and fluorescent lamp.
NG
>>
●
Repair or replace fluorescent harness connector.
●
Repair or replace FPC connector.
Inspection/Engine Speed Signal
EKS00104
1.
CHECK VISUAL
At the engine start, does the pointer on the tachometer fluctuate?
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 unified meter control unit (sub) and meter and gauges assembly.
3.
CHECK ECM SYSTEM
Preform ECM self-diagnosis. Refer to
EC-52, "Emission-related Diagnostic Information"
OK or NG
YES
>> GO TO 4.
NO
>> Perform “Diagnostic Procedure” for displayed DTC.
4.
CHECK SELF-DIAGNOSIS
Preform the combination meter self-diagnosis mode, refer to
DI-18, "Meter/Gauges Operation, Odo/Trip
Meter, A/T Indicator and ICC System Display"
OK or NG
OK
>> Combination meter is OK.
NG
>> Replace unified meter control unit (sub).
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