2004 INFINITI QX56 Factory Service Manual

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heater load capacity clock suspension fog light fuel

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Page 1137 of 3371

DI-34
WARNING LAMPS
Revision: August 20072004 QX56
WKWA3058E

Page 1138 of 3371

WARNING LAMPS
DI-35
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Revision: August 20072004 QX56
WKWA3059E

Page 1139 of 3371

DI-36
WARNING LAMPS
Revision: August 20072004 QX56
WKWA3060E

Page 1140 of 3371

WARNING LAMPS
DI-37
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Revision: August 20072004 QX56
4WD Models
WKWA3061E

Page 1141 of 3371

INFINITI QX56 2004 Factory Service Manual DI-38
WARNING LAMPS
Revision: August 20072004 QX56
Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)EKS007EA
1. CHECK OIL PRESSURE SENSOR SIGNAL
1. Turn ignition switch ON.
2. Check voltage bet

DI-38
WARNING LAMPS
Revision: August 20072004 QX56
Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)EKS007EA
1. CHECK OIL PRESSURE SENSOR SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector
M24 terminal 20 (Y) 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 (B/P) and oil pressure sensor harness connec-
tor F4 terminal 3 (B/P).
OK or NG
OK >> Replace the combination meter. Refer to IP-13, "Combi-
nation Meter" .
NG >> Repair harness or connector.
3. CHECK OIL PRESSURE SENSOR REFERENCE VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect oil pressure sensor connector F4.
3. Turn ignition switch ON.
4. Check voltage between combination meter harness connector
M24 terminal 22 (GR/L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace the combination meter. Refer to IP-13, "
Combi-
nation Meter" .
Terminals
Condition Voltage (V) (+)
(–)
ConnectorTe r m i n a l
(Wire color)
M24 20 (Y) GroundWhen ignition switch is in ON
position. (Engine stopped)Ye s
Engine running. (Idle speed) Yes
WKIA1833E
Continuity should exist.
WKIA1837E
Voltage : Approx. 5V
WKIA1834E

Page 1142 of 3371

INFINITI QX56 2004 Factory Service Manual WARNING LAMPS
DI-39
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Revision: August 20072004 QX56
4. CHECK OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M2

WARNING LAMPS
DI-39
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Revision: August 20072004 QX56
4. CHECK OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M24.
3. Check continuity between combination meter harness connector M24 terminal 22 (GR/L) and oil pressure
sensor harness connector F4 terminal 1 (GR/L).
4. Check continuity between combination meter harness connector
M24 terminal 22 (GR/L) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK OIL PRESSURE SENSOR SIGNAL CIRCUIT
1. Check continuity between combination meter harness connector M24 terminal 20 (Y) and oil pressure
sensor harness connector F4 terminal 2 (Y).
2. Check continuity between combination meter harness connector
M24 terminal 20 (Y) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK OIL PRESSURE SENSOR GROUND CIRCUIT
Check continuity between combination meter harness connector
M24 terminal 16 (B/P) and ground.
OK or NG
OK >> Replace oil pressure sensor.
NG >> Repair harness or connector.Continuity should exist.
Continuity should not exist.
WKIA1835E
Continuity should exist.
Continuity should not exist.
WKIA1836E
Continuity should not exist.
WKIA2685E

Page 1143 of 3371

INFINITI QX56 2004 Factory Service Manual DI-40
WARNING LAMPS
Revision: August 20072004 QX56
Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)EKS007EB
NOTE:
For oil pressure inspection, refer to LU-7, "
OIL PRESSURE CHECK"

DI-40
WARNING LAMPS
Revision: August 20072004 QX56
Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)EKS007EB
NOTE:
For oil pressure inspection, refer to LU-7, "
OIL PRESSURE CHECK" .
1. CHECK ENGINE OIL PRESSURE GAUGE OPERATION
Observe operation of engine oil pressure gauge.
Does engine oil pressure gauge function properly?
YES >> Replace the combination meter. Refer to DI-25, "Removal and Installation of Combination Meter"
.
NO >> Go to DI-19, "
Engine Oil Pressure Signal Inspection" .

Page 1144 of 3371

INFINITI QX56 2004 Factory Service Manual A/T INDICATOR
DI-41
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Revision: August 20072004 QX56
A/T INDICATORPFP:24814
Wiring Diagram — AT/IND —EKS007EC
WKWA3062E

A/T INDICATOR
DI-41
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Revision: August 20072004 QX56
A/T INDICATORPFP:24814
Wiring Diagram — AT/IND —EKS007EC
WKWA3062E

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