2006 INFINITI QX56 Factory Service Manual

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Page 1137 of 3383

INFINITI QX56 2006 Factory Service Manual DI-16
COMBINATION METERS
Revision: November 20092006 QX56
Next test requested A10XXXA/D port A/D value (non-
ratioed).0-255
Next test requested A11XXX A/D port A/D value (non-
ratioed).
0-255
Next tes

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INFINITI QX56 2006 Factory Service Manual COMBINATION METERSDI-17
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Revision: November 2009 2006 QX56
How to Proceed With Trouble DiagnosisEKS00BC1
1. Confirm the symptom or customer complaint.
2. Perform diagnosis acc

Page 1139 of 3383

INFINITI QX56 2006 Factory Service Manual DI-18
COMBINATION METERS
Revision: November 20092006 QX56
Power Supply and Ground Circuit InspectionEKS00BC3
1. CHECK FUSES
Check for blown combination meter fuses.
Refer to DI-10, "Wiring Diagram �

Page 1140 of 3383

INFINITI QX56 2006 Factory Service Manual COMBINATION METERSDI-19
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Revision: November 2009 2006 QX56
Symptom ChartEKS00BC4
Vehicle Speed Signal InspectionEKS00BC5
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

COMBINATION METERSDI-19
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Revision: November 2009 2006 QX56
Symptom ChartEKS00BC4
Vehicle Speed Signal InspectionEKS00BC5
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Refer to BRC-29, "
SELF-DIAGNOSIS" .
OK or NG
OK >> Replace the combination meter. Refer to IP-13, "COMBINATION METER" .
NG >> Perform "Diagnostic Procedure" for displayed DTC. Refer to BRC-11, "
TROUBLE DIAGNOSIS" .
Engine Oil Pressure Signal Inspection EKS00BC6
1. CHECK OIL PRESSURE SENSOR SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector M24 terminal 20 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK OIL PRESSURE SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M24 and oil pressure sensor connector F4.
3. Check continuity between combination meter harness connector M24 terminal 16 and oil pressure sensor harness connector F4
terminal 3.
OK or NG
OK >> Replace the combination meter. Refer to IP-13, "COM-
BINATION METER" .
NG >> Repair harness or connector.
Trouble phenomenon Possible cause
Improper tachometer indication. Refer to DI-21, "
Engine Speed Signal Inspection" .
Improper water temperature gauge indication. Refer to DI-21, "
Water Temperature Signal Inspection" .
Improper speedometer or odometer. Refer to DI-19, "
Vehicle Speed Signal Inspection" .
Improper fuel gauge indication. Refer to DI-22, "
Fuel Level Sensor Unit Inspection" .
Fuel warning lamp indication is irregular.
Improper A/T oil temperature gauge indication Refer to
AT-127, "
DTC P1710 A/T FLUID TEMPERATURE SEN-
SOR CIRCUIT" .
Improper voltage gauge indication Replace combination meter. Refer to IP-13, "
COMBINATION
METER" .
More than one gauge does not give proper indication.
Improper A/T position indication. Refer to DI-41, "
A/T INDICATOR" .
Illumination control does not operate properly. Refer to LT-157, "
ILLUMINATION" .
Terminals
Condition Voltage (V)
(+)
(– )
Connector Terminal
M24 20 Ground When ignition switch is in ON
position. (Engine stopped)
Ye s
Engine running. (Idle speed) Yes
WKIA1833E
Continuity should exist.
WKIA1837E

Page 1141 of 3383

INFINITI QX56 2006 Factory Service Manual DI-20
COMBINATION METERS
Revision: November 20092006 QX56
3. CHECK OIL PRESSURE SENSOR REFERENCE VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect oil pressure sensor connector F4.
3. Turn ignition s

Page 1142 of 3383

INFINITI QX56 2006 Factory Service Manual COMBINATION METERSDI-21
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Revision: November 2009 2006 QX56
6. CHECK OIL PRESSURE SENSOR GROUND CIRCUIT
Check continuity between combination meter harness connector
M24 termina

Page 1143 of 3383

INFINITI QX56 2006 Factory Service Manual DI-22
COMBINATION METERS
Revision: November 20092006 QX56
Fuel Level Sensor Unit InspectionEKS00BC9
FUEL LEVEL SENSOR UNIT
The following symptoms do not indicate a malfunction.
Depending on vehicle p

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INFINITI QX56 2006 Factory Service Manual COMBINATION METERSDI-23
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Revision: November 2009 2006 QX56
4. CHECK HARNESS FOR OPEN OR SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect combination meter connecto

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