Hello, I have a quick question. Where would the idle sensor in a 2004 Nissan Altima 2.5 be located under the hood? I've been looking online for some answers, but I am getting other years.
Your vehicle has no idle sensor , it has electronic throttle control . Has 2 position sensors in the gas pedal assembly an 2 position sensors in the throttle body ,plus a DC motor that controls the idle . The sensors are inputs to the engine computer ,the computer controls the DC motor to control idle .
DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR PFP:16119 Component Description UBS002XS Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. On Board Diagnosis Logic UBS002XT These self-diagnoses have the one trip detection logic. FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. DTC Confirmation Procedure UBS00CVM NOTE: ? Perform PROCEDURE FOR MALFUNCTION A AND B first. If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION C. ? If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR MALFUNCTION A AND B With CONSULT-II 1. Turn ignition switch ON and wait at least 1 second. 2. Select "DATA MONITOR" mode with CONSULT-II. 3. Shift selector lever to D position (A/T) or 1st position (M/T), and wait at least 3 seconds. 4. Shift selector lever to P position (A/T) or Neutral position (M/T). 5. Turn ignition switch OFF and wait at least 10 seconds. 6. Turn ignition switch ON and wait at least 1 second. 7. Shift selector lever to D position (A/T) or 1st position (M/T), and wait at least 3 seconds. 8. Shift selector lever to P position (A/T) or Neutral position (M/T). 9. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 10. If DTC is detected, go to EC-357, "Diagnostic Procedure" . With GST Follow the procedure "With CONSULT-II" above. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1121 1121 Electric throttle control actuator A) Electric throttle control actuator does not function properly due to the return spring malfunction. ? Electric throttle control actuator B) Throttle valve opening angle in fail-safe mode is not in specified range. C) ECM detects the throttle valve is stuck open. Detected items Engine operating condition in fail-safe mode Malfunction A ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The engine speed will not rise more than 2,000 rpm. Malfunction B ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less. Malfunction C While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the engine stalls. The engine can restart in N or P position, and engine speed
2 hours ago