2008 INFINITI QX56 Factory Service Manual

Page 1353 of 4083

INFINITI QX56 2008  Factory Service Manual EC-54
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
 WITH CONSULT-III
The emission related diagnostic informatio

Page 1354 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-55
< FUNCTION DIAGNOSIS > [VK56DE]
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If the DTC is not for AT related items (see 
EC-462, "DTC Index"), skip step 2.
1. If the ignition

Page 1355 of 4083

INFINITI QX56 2008  Factory Service Manual EC-56
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
When there is an open circuit on MIL circuit, the ECM c
annot warn the driver by lighting up MIL when there is
malfunction on engi

Page 1356 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-57
< FUNCTION DIAGNOSIS > [VK56DE]
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4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnosti

Page 1357 of 4083

INFINITI QX56 2008  Factory Service Manual EC-58
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
tified codes can be identified by using the CONSULT-II
I or GST. A DTC will be used as an example for how to
read a code.
A partic

Page 1358 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-59
< FUNCTION DIAGNOSIS > [VK56DE]
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C) without the same malfunction recurring. The “TIM
E” in “SELF-DIAGNOSTIC RESULTS” mode o

Page 1359 of 4083

INFINITI QX56 2008  Factory Service Manual EC-60
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EXPLANATION FOR DRIVING PATTERNS FOR “M
ISFIRE <EXHAUST QUALITY DETERIORA-
TION>”, “FUEL INJECTION SYSTEM”
<Driving Patter

Page 1360 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-61
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All components and systems should be monitored at least once by the OBD system.
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