2008 INFINITI QX56 engine coolant

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Page 1327 of 4083

INFINITI QX56 2008  Factory Service Manual EC-28
< FUNCTION DIAGNOSIS >[VK56DE]
MULTIPORT FUEL INJECTION SYSTEM
MULTIPORT FUEL INJECTION SYSTEM
System DescriptionINFOID:0000000001351227
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to

Page 1328 of 4083

INFINITI QX56 2008  Factory Service Manual MULTIPORT FUEL INJECTION SYSTEMEC-29
< FUNCTION DIAGNOSIS > [VK56DE]
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MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
The mixture ratio feedback system prov
ides th

Page 1330 of 4083

INFINITI QX56 2008  Factory Service Manual ELECTRIC IGNITION SYSTEMEC-31
< FUNCTION DIAGNOSIS > [VK56DE]
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ELECTRIC IGNITION SYSTEM
System DescriptionINFOID:0000000001351228
INPUT/OUTPUT SIGNAL CHART
*1: This sign

Page 1331 of 4083

INFINITI QX56 2008  Factory Service Manual EC-32
< FUNCTION DIAGNOSIS >[VK56DE]
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL
Input/Output Signal ChartINFOID:0000000001351236
*1: This signal is sent to the ECM through CAN communica

Page 1332 of 4083

INFINITI QX56 2008  Factory Service Manual AUTOMATIC SPEED CONTROL DEVICE (ASCD)EC-33
< FUNCTION DIAGNOSIS > [VK56DE]
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NP
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000001351238
INPUT/OUTPUT

Page 1335 of 4083

INFINITI QX56 2008  Factory Service Manual EC-36
< FUNCTION DIAGNOSIS >[VK56DE]
COOLING FAN CONTROL
COOLING FAN CONTROL
DescriptionINFOID:0000000001351873
SYSTEM DESCRIPTION
Cooling Fan Control
*1: The ECM determines the start signal status by

Page 1339 of 4083

INFINITI QX56 2008  Factory Service Manual EC-40
< FUNCTION DIAGNOSIS >[VK56DE]
INTAKE VALVE TIMING CONTROL
INTAKE VALVE TIMING CONTROL
DescriptionINFOID:0000000001351376
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communi

Page 1341 of 4083

INFINITI QX56 2008  Factory Service Manual EC-42
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Therefore, when electrical controlled throttle and part
 of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM