2011 INFINITI QX56 Coil

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Page 2066 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-42
< SYSTEM DESCRIPTION >[VK56VD]
SYSTEM
ELECTRIC IGNITION SYSTEM : System Diagram
INFOID:0000000006217705
ELECTRIC IGNITION SYSTEM  : System DescriptionINFOID:0000000006217706
INPUT/OUTPUT SIGNAL

Page 2094 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-70
< SYSTEM DESCRIPTION >[VK56VD]
DIAGNOSIS SYSTEM (ECM)
*: The item is indicated, but not used.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the displa

Page 2188 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-164
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
NOTE:
Check “A/F ALPHA-B1” and “A/F ALPHA-B2” for approxim
ately 1 minute because they may fluctuate. It is
NG

Page 2204 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-180
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0011, P0021 IVT CONTROL
2. Provide 12 V DC between intake valve timing control solenoid
valve terminals 1 and 2, and then interrupt it. Check that the
plunge

Page 2218 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-194
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0075, P0081 IVT CONTROL SOLENOID VALVE
2. Disconnect ECM harness connector.
3. Check the continuity between IVT control sol
enoid valve harness connector and

Page 2317 of 5598

INFINITI QX56 2011  Factory Service Manual 
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
EC-293
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Stop engine and visually check exhaust tube, three way

Page 2318 of 5598

INFINITI QX56 2011  Factory Service Manual 
EC-294
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0300, P0301, P0302, P
0303, P0304, P0305, P0306,  P0307, P0308 MISFIRE
When the gap is less than 13 mm (0.52 in), a spark  might be generated even if the coi

Page 2333 of 5598

INFINITI QX56 2011  Factory Service Manual 
P0420, P0430 THREE WAY CATALYST FUNCTIONEC-309
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Diagnosis ProcedureINFOID:0000000006217853
1.CHECK EXHAUST SYSTEM
Visually check exha
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