2001 INFINITI QX4 Factory Service Manual

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Page 705 of 2395

INFINITI QX4 2001 Factory Service Manual Possible CauseNBEC0429IHarness or connectors (The sensor circuit is open or shorted.) IEngine coolant temperature sensor SEF058Y DTC Confirmation ProcedureNBEC0071NOTE: If ªDTC Confirmation Procedure

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INFINITI QX4 2001 Factory Service Manual Wiring DiagramNBEC0072 MEC945C GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR (ECTS) (CIRCUIT) Wiring Diagram EC-171

Page 707 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBEC0073 1 CHECK ECTS POWER SUPPLY CIRCUIT 1. Turn ignition switch ªOFFº. 2. Disconnect engine coolant temperature sensor (ECTS) harness connector F112, F28. SEF370Z 3. Turn igni

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INFINITI QX4 2001 Factory Service Manual 4 DETECT MALFUNCTIONING PART Check the following. IHarness connectors F112, F28 IHarness for open between ECM and engine coolant temperature sensor IHarness for open between TCM (Transmission Control

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INFINITI QX4 2001 Factory Service Manual DescriptionNBEC0074NOTE: If DTC P0120 is displayed with DTC P0510, first perform the trouble diagnosis for DTC P0510. Refer to EC-431. COMPONENT DESCRIPTIONNBEC0074S01The throttle position sensor resp

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INFINITI QX4 2001 Factory Service Manual ECM Terminals and Reference Value=NBEC0651Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/outpu

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INFINITI QX4 2001 Factory Service Manual ICrankshaft position sensor (REF) ICrankshaft position sensor (POS) IMass air flow sensor MALFUNCTION CNBEC0430S03IHarness or connectors (The throttle position sensor circuit is open or shorted.) IInt

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INFINITI QX4 2001 Factory Service Manual SEF058Y PROCEDURE FOR MALFUNCTION BNBEC0078S02With CONSULT-IINBEC0078S02011) Turn ignition switch ªONº. 2) Select ªDATA MONITORº mode with CONSULT-II. 3) Start engine and let it idle for at least
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