2008 INFINITI QX56 Factory Service Manual

Page 1385 of 4083

INFINITI QX56 2008  Factory Service Manual EC-86
< COMPONENT DIAGNOSIS >[VK56DE]
POWER SUPPLY AND GROUND CIRCUIT
Check the following.
• Harness connectors F32, E2
• Harness for open or short between ECM and ground
>> Repair open circuit or

Page 1386 of 4083

INFINITI QX56 2008  Factory Service Manual U1000, U1001 CAN COMM CIRCUITEC-87
< COMPONENT DIAGNOSIS > [VK56DE]
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EC
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U1000, U1001 CAN COMM CIRCUIT
DescriptionINFOID:0000000001351359
CAN (Controller Area Network) is a

Page 1387 of 4083

INFINITI QX56 2008  Factory Service Manual EC-88
< COMPONENT DIAGNOSIS >[VK56DE]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000001351364
CAN (Controller Area Network) is a serial communication line for real time ap

Page 1388 of 4083

INFINITI QX56 2008  Factory Service Manual U1010 CONTROL UNIT (CAN)EC-89
< COMPONENT DIAGNOSIS > [VK56DE]
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EC
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>>
INSPECTION END
Revision: March 2010 2008 QX56

Page 1389 of 4083

INFINITI QX56 2008  Factory Service Manual EC-90
< COMPONENT DIAGNOSIS >[VK56DE]
P0011, P0021 IVT CONTROL
P0011, P0021 IVT CONTROL
On Board Diagn
osis LogicINFOID:0000000001351370
FA I L - S A F E  M O D E
When the malfunction is detected, the

Page 1390 of 4083

INFINITI QX56 2008  Factory Service Manual P0011, P0021 IVT CONTROLEC-91
< COMPONENT DIAGNOSIS > [VK56DE]
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5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to 
EC-91, "
Diagnosis Procedure".
 With GST
Fo

Page 1391 of 4083

INFINITI QX56 2008  Factory Service Manual EC-92
< COMPONENT DIAGNOSIS >[VK56DE]
P0011, P0021 IVT CONTROL
Refer to EC-86, "Ground Inspection".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connections.
3.CHECK INTAKE VALVE TIMING CONT

Page 1392 of 4083

INFINITI QX56 2008  Factory Service Manual P0011, P0021 IVT CONTROLEC-93
< COMPONENT DIAGNOSIS > [VK56DE]
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3. Also check harness for short to power. 
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.DETECT MALFUNCTIONING