2001 INFINITI QX4 Factory Service Manual

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Page 697 of 2395

INFINITI QX4 2001 Factory Service Manual 3 CHECK ABSOLUTE PRESSURE SENSOR POWER SUPPLY CIRCUIT 1. Turn ignition switch ªONº. 2. Check voltage between absolute pressure sensor terminal 1 and ground with CONSULT-II or tester. SEF299X OK or N

Page 698 of 2395

INFINITI QX4 2001 Factory Service Manual 7 CHECK ABSOLUTE PRESSURE SENSOR 1. Remove absolute pressure sensor with its harness connector connected. 2. Remove hose from absolute pressure sensor. 3. Install a vacuum pump to absolute pressure se

Page 699 of 2395

INFINITI QX4 2001 Factory Service Manual SEF962Y SEF012P Component DescriptionNBEC0064The intake air temperature sensor is mounted to the air duct hous- ing. The sensor detects intake air temperature and transmits a sig- nal to the ECM. The

Page 700 of 2395

INFINITI QX4 2001 Factory Service Manual SEF058Y PROCEDURE FOR MALFUNCTION ANBEC0066S01With CONSULT-IINBEC0066S01011) Turn ignition switch ªONº. 2) Select ªDATA MONITORº mode with CONSULT-II. 3) Wait at least 5 seconds. 4) If 1st trip DT

Page 701 of 2395

INFINITI QX4 2001 Factory Service Manual Wiring DiagramNBEC0067 MEC944C DTC P0110 INTAKE AIR TEMPERATURE SENSOR Wiring Diagram EC-166

Page 702 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBEC0068 1 CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. Turn ignition switch ªOFFº. 2. Disconnect intake air temperature sensor harness connector. SEF962Y 3. Turn

Page 703 of 2395

INFINITI QX4 2001 Factory Service Manual 4 DETECT MALFUNCTIONING PART Check the following. IHarness connectors E1, M1 IHarness connectors M33, F22 IHarness for open between ECM and intake air temperature sensor IHarness for open between TCM

Page 704 of 2395

INFINITI QX4 2001 Factory Service Manual SEF594K Component DescriptionNBEC0069The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal retu
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