Abs INFINITI QX56 2009 Factory Service Manual

MWI-8
< FUNCTION DIAGNOSIS >
METER SYSTEM
SPEEDOMETER
SPEEDOMETER : System DiagramINFOID:0000000003776585
SPEEDOMETER : System DescriptionINFOID:0000000003776586
The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via
CAN communication lines.
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter with CAN communication line.
BCM • Transmits signals provided by various units to the combination meter with CAN communication
line.
• Transmits the security signal to the combination meter.
TCM • Transmits shift position signal to the combination meter with CAN communication line.
• Transmits A/T oil temperature signal to the combination meter with CAN communication line.
Washer level switch Transmits the washer level signal to the combination meter.
Brake fluid level switch Transmits the brake fluid level switch signal to the combination meter.
Parking brake switch Refer to MWI-36, "
Description".
Unit
Description
WKIA5370E
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-9
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SPEEDOMETER : Compone nt Parts LocationINFOID:0000000003776587
SPEEDOMETER : Component DescriptionINFOID:0000000003776588
TACHOMETER
TACHOMETER : System DiagramINFOID:0000000003776589
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Indicates the vehicle speed according to the vehicle speed signal received from ABS actuator and
electric unit (control unit) via CAN communication.
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter with CAN communication line.
SKIB6904E
Revision: December 20092009 QX56

MWI-10
< FUNCTION DIAGNOSIS >
METER SYSTEM
TACHOMETER : System Description
INFOID:0000000003776590
The tachometer indicates engine speed in revolutions per minute (rpm).
The ECM provides an engine speed signal to the co mbination meter via CAN communication lines.
TACHOMETER : Component Parts LocationINFOID:0000000003776591
TACHOMETER : Component DescriptionINFOID:0000000003776592
ENGINE COOLANT TEMPERATURE GAUGE
1. IPDM E/R E122, E1242. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control
unit) E125 6. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Indicates the engine speed in RPM according to the engine speed signal received from ECM via
CAN communication.
ECM Transmits the engine speed signal to the combination meter with CAN communication line.
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-11
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ENGINE COOLANT TEMPERATURE GAUGE : System DiagramINFOID:0000000003776593
ENGINE COOLANT TEMPERATURE GAUGE : System DescriptionINFOID:0000000003776594
The engine coolant temperature gauge indicates the engine coolant temperature.
The ECM provides an engine coolant temperature signal to the combination meter via CAN communication
lines.
ENGINE COOLANT TEMPERATURE GA UGE : Component Parts Location
INFOID:0000000003776595
SKIB6905E
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-13
< FUNCTION DIAGNOSIS >
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O PFUEL GAUGE : Component DescriptionINFOID:0000000003776600
ENGINE OIL PRESSURE GAUGE
ENGINE OIL PRESSURE GAUGE : System DiagramINFOID:0000000003776601
ENGINE OIL PRESSURE GAUGE : System DescriptionINFOID:0000000003776602
The engine oil pressure gauge indicates whether the engine oil pressure is low or normal.
The oil pressure gauge is controlled by the IPDM E/R. The IPDM E/R reads the ON /OFF signals from the oil
pressure switch and transmits the oil pressure switch signal to the combination meter via BCM with the CAN
communication line. The oil pressure gauge displays a low or normal indication according to the oil pressure
switch signal received via CAN communication.
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
Unit Description
Combination meter Indicates the fuel level according to the fuel level sensor signal received from the fuel level sensor
unit.
Fuel level sensor unit Refer to MWI-33, "
Description".
AWNIA0174GB
Revision: December 20092009 QX56

MWI-14
< FUNCTION DIAGNOSIS >
METER SYSTEM
ENGINE OIL PRESSURE GAUGE : Component Parts Location
INFOID:0000000003776603
ENGINE OIL PRESSURE GAUGE : Component DescriptionINFOID:0000000003776604
VOLTAGE GAUGE
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control
unit) E125 6. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Indicates the engine oil pressure (low/normal) according to the oil pressure switch signal received
from BCM with CAN
communication line.
IPDM E/R Reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch signal
to the combination meter via BCM with the CAN communication line.
Oil pressure switch Refer to MWI-35, "
Description".
BCM Transmits the oil pressure switch signal received from IPDM E/R via CAN communication to the
combination meter via CAN communication.
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-15
< FUNCTION DIAGNOSIS >
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VOLTAGE GAUGE : System DiagramINFOID:0000000003776605
VOLTAGE GAUGE : System DescriptionINFOID:0000000003776606
The voltage gauge indicates the battery/charging system voltage.
The voltage gauge is regulated by the unified meter control unit.
VOLTAGE GAUGE : Component Parts LocationINFOID:0000000003776607
AWNIA0106GB
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-17
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O PODO/TRIP METER : Component DescriptionINFOID:0000000003776612
SHIFT POSITION INDICATOR
SHIFT POSITION INDICATOR : System DiagramINFOID:0000000003776613
SHIFT POSITION INDICATOR : System DescriptionINFOID:0000000003776614
The TCM receives A/T indicator signals from the tr ansmission range switch. The TCM then sends A/T position
indicator signals to the combination meter via CAN co mmunication lines. The combination meter indicates the
received shift position.
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
Unit Description
Combination meter Converts the vehicle speed signal
received from the ABS actuator and electric unit (control unit) via
CAN communication to mileage, and it displays the accumulated mileage to the odo/trip meter.
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
AWNIA1906GB
Revision: December 20092009 QX56

MWI-18
< FUNCTION DIAGNOSIS >
METER SYSTEM
SHIFT POSITION INDICATOR : Component Parts Location
INFOID:0000000003776615
SHIFT POSITION INDICATOR : Component DescriptionINFOID:0000000003776616
WARNING LAMPS/INDICATOR LAMPS
WARNING LAMPS/INDICATOR LAMPS : System DiagramINFOID:0000000003776617
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control
unit) E125 6. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Displays the shift position on the information display using shift position signal received from TCM.
TCM Transmits the shift position signal to the combination meter via CAN communication.
JSNIA0449GB
Revision: December 20092009 QX56

MWI
METER SYSTEMMWI-19
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WARNING LAMPS/INDICATOR LAMPS : System DescriptionINFOID:0000000003776618
OIL PRESSURE WARNING LAMP
• IPDM E/R reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch sig-
nal to the combination meter via BCM with the CAN communication line.
• The combination meter turns the oil pressure warning lamp ON/OFF according to the oil pressure switch sig- nal received via CAN communication.
WARNING LAMPS/INDICATOR LAMPS : Component Parts LocationINFOID:0000000003776619
WARNING LAMPS/INDICATOR LAMPS : Component DescriptionINFOID:0000000003776620
INFORMATION DISPLAY
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Turns the oil pressure warning lamp ON/OFF according to the oil pressure switch signal received
from BCM by means of communication.
IPDM E/R Reads the ON/OFF signals from the oil pressure switch and transmits the oil pressure switch signal
to the combination meter via BCM with the CAN communication line.
Oil pressure switch Refer to MWI-35, "
Description".
BCM Transmits the oil pressure switch signal received from IPDM E/R via CAN communication to the
combination meter via CAN communication.
Revision: December 20092009 QX56