Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Removal 1. If equipped with power seats, move the seat fully rearward. 2. If equipped with adjustable pedal system, move the pedal to the full forward position. 3. If equipped with a manual transmission, place the transmission in second gear. 4. Remove the passenger air bag module. For additional information, refer to Section 501-20B. 5. Close the glove compartment. 6. Position the battery junction box (BJB) aside. Release the mounting tabs. 7. Remove the bulkhead electrical connectors from inside the engine compartment. 1. Loosen the bolts. 2. Disconnect the bulkhead electrical connectors. 8. Remove the bulkhead electrical connector insulator. 9. Unclip the bulkhead electrical connectors from the dash panel. 10. Remove the instrument panel steering column cover. For additional information, refer to Instrument Panel — Steering Column Cover in this section. 11. If equipped, remove the valance panel. Remove the two pin-type retainers and release the expander clip. 12. Disconnect the restraint control module (RCM) electrical connector. 1. Release the locking tab. 2. Disconnect the RCM electrical connector. Release the wiring harness locators. 13. Disconnect the electronic blend door actuator electrical connector. Release the wiring harness locators. 14. Disconnect the climate control head vacuum harness connector. 15. Remove the LH and RH front door scuff plates. 16. Position the LH and RH door weatherstrip seals aside. 17. Remove the LH and RH A-pillar lower trim panels. 18. If equipped, remove the alternative fuel control module (AFCM). 1. Disconnect the electrical connector. 2. NOTE: The AFCM is attached with Velcro®. Remove the AFCM from the vehicle by pulling gently down and to the right. 19. Remove the LH and RH A-pillar passenger assist handles. 1. Remove the four screw covers and four screws. 2. Remove the LH and RH A-pillar passenger assist handles. 20. Remove the LH and RH windshield side garnish mouldings. 21. Disconnect the brake pedal position (BPP) switch electrical connector. Release the wiring harness locators.

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During cranking, the Ignition Control Module (ICM) monitors the 7X crankshaft position sensor signal. Once the ICM determines spark synchronization, 3X reference signals are sent to the PCM. The PCM will command all six injectors ON for one priming shot of fuel in all cylinders. After the priming, the injectors are left OFF for the next six fuel control reference signals (two crankshaft revolutions). This allow each cylinder a chance to use the fuel from the priming shot. During this waiting period, a cam pulse will have been received by the PCM. The PCM uses the Cam signal pulses to initiate sequential fuel injection. The PCM constantly monitors the number of pulses on the Cam signal circuit and compares the number of Cam pulses to the number of 24X reference pulses and the number of 3X reference pulses being received. If the PCM receives an incorrect number of pulses on the Cam reference circuit, DTC P0341 will set and the PCM will initiate injector sequence without the Cam signal with a one in six chance that injector sequence is correct. The engine will continue to start and run normally, although the misfire diagnostic will be affected if a misfiring condition occurs. Conditions for Running the DTC The engine is running (3X reference pulses are being received).

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Vehicle Application: Customer Concern: Tests/Procedures: Potential Causes: Tech Tips: 2004 Nissan Murano 3.5L, USA/Canada Malfunction Indicator Light (MIL) is ON. Bank 1 catalytic converter code P0420. 1. Check scan data for fuel trims to see if the system is in proper fuel control – look for 0% plus or minus 10% in generic or 90 – 110 % alpha in manufacture specific. 2. Verify there are no exhaust leaks. 3. Drive the vehicle and check the bank 1 rear O2 sensor activity on the scan tool or with a voltmeter to see if the bank 1 rear O2 sensor is cross counting like a typical front O2 sensor would. Catalytic Converter If in manufacture specific with the scan tool, Nissan displays fuel trims in alpha. 100% alpha is the same as 0% fuel trim. This vehicle has front air fuel ratio sensors – not O2 sensors. Bank 1 is the firewall bank. Bank 2 is the radiator bank. Before the catalytic converter lights off, the rear O2 sensor voltage is usually down around 0.2 – 0.4 volts or so but when the catalytic converter lights off, it uses up a lot of the oxygen so the rear O2 sensor voltage will typically reads around 0.6 – 0.7 volts and have some movement but not a lot of movement and should not cross count above and below 0.5 volts. The catalytic converter is covered under the 8 year 80,000 mile federal emissions warranty. 2004 Nissan Quest 3.5L, USA/Canada

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Definition Body Control System Malfunction Chassis Control System Malfunction HO2S 1 Heater Circuit MAF System Performance MAF Sensor Circuit – Low Frequency TP Sensor Circuit – High Voltage ECT Excessive Time To Enter Closed Loop Fuel Control ECT Below Thermostat Regulating Temperature HO2S 1 – Insufficient Activity For Closed Loop Operation HO2S Circuit Low Voltage – Sensor 1 HO2S Circuit High Voltage – Sensor 1 HO2S Circuit Slow Response – Sensor 1 Injector No. 5 Control Circuit Injector No. 6 Control Circuit High Transmission Fluid Temperature Fuel Pump Control Circuit Idle Speed – Low Idle Speed – High A/C Refrigerant Pressure Sensor Circuit System Voltage PCM Internal Program Fault PCM Not Programmed Generator Performance Malfunction Indicator Light Control Circuit Transmission Fluid Temperature Sensor Circuit Malfunction

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P1128 DESCRIPTION The air/fuel control system, in addition to a number of sensors, includes the following components and systems: – Intake air system. – Exhaust system. – Evaporative emissions control system (includes purge control solenoid valve). – Fuel injectors. – Fuel pressure regulator. – Fuel pump. For the air/fuel ratio to be within limits, all of the sensors, components and systems associated with the air/fuel control system must function within normal parameters. FAILURE CONDITIONS (FOR LONG-TERM FUEL TRIM) The ECM will set a code and the Malfunction Indicator Lamp (MIL) will turn on if the long-term fuel trim value goes to 10% to 15% lean for 30 seconds during two driving cycles when the following conditions are met: 1. Engine load exceeds 1.8 milliseconds. 2. Engine coolant temperature is above 158 °F (70 °C). 3. Canister purge system is not operating. 4. Mass air flow is less than or 5.5 g/s. 5. Engine speed is below 1000 RPM.