2008 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2008  Factory Service Manual EC-70
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
A/F S1 HTR (B1) 
[%]• A/F sensor 1 heater control value com-
puted by ECM according to the input sig-
nals.
• The current flow

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NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the displ

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ON BOARD DIAGNOSTIC (OBD) SYSTEM
*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE

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Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained b

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ON BOARD DIAGNOSTIC (OBD) SYSTEM
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding

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COMPONENT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:000000000135

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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Diagnosis Procedure
INFOID:0000000001351354
OVERALL SEQUENCE
PBIB2268E
Revision: March 2010 2008 QX56

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DETAILED PROCEDURE
1.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Conf