2001 INFINITI QX4 Factory Service Manual

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Page 753 of 2395

INFINITI QX4 2001 Factory Service Manual SEF463R SEF288D Component DescriptionNBEC0108The heated oxygen sensor 1 (front) is placed into the front tube. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heate

Page 754 of 2395

INFINITI QX4 2001 Factory Service Manual TERMI- NAL NO.WIRE COLORITEM CONDITION DATA (DC Voltage) 62 G/BHeated oxygen sensor 1 (front) (bank 2)[Engine is running] IWarm-up condition IEngine speed is 2,000 rpm.0 - Approximately 1.0V (Peri- od

Page 755 of 2395

INFINITI QX4 2001 Factory Service Manual DTC Confirmation ProcedureNBEC0112CAUTION: Always drive vehicle at a safe speed. NOTE: If ªDTC Confirmation Procedureº has been previously conducted, always turn ignition switch ªOFFº and wait at

Page 756 of 2395

INFINITI QX4 2001 Factory Service Manual SEF308XB Overall Function CheckNBEC0113Use this procedure to check the overall function of the heated oxy- gen sensor 1 (front) circuit. During this check, a 1st trip DTC might not be confirmed. WITH

Page 757 of 2395

INFINITI QX4 2001 Factory Service Manual Wiring DiagramNBEC0114RIGHT BANKNBEC0114S01 MEC947C DTC P0133, P0153 HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1)/(BANK 2) (RESPONSE MONITORING) Wiring Diagram EC-222

Page 758 of 2395

INFINITI QX4 2001 Factory Service Manual LEFT BANKNBEC0114S02 MEC948C GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX DTC P0133, P0153 HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1)/(BANK 2) (RESPONSE MONITORING) Wiring Diagram (Contd) EC-2

Page 759 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBEC0115 1 RETIGHTEN GROUND SCREWS 1. Turn ignition switch ªOFFº. 2. Loosen and retighten engine ground screws. SEF959Y ©GO TO 2. 2 RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT) Loos

Page 760 of 2395

INFINITI QX4 2001 Factory Service Manual 5 CLEAR THE SELF-LEARNING DATA With CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Select ªSELF-LEARNING CONTº in ªWORK SUPPORTº mode with CONSULT-II. 3. Clear the s
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