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Idle speed control system, RPM high

Tiny
DUWHOP31
  • MEMBER
  • 2007 NISSAN MAXIMA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 235,000 MILES
I just changed both Bank 1 and 2 Camshaft position sensors on my car. After I replaced the 1st CPS (Bank 2 back of engine) my car pulled up one code P0340 which is CPS Bank 1 (front of engine). My car ran so much better and started up easily. So, I cleared the codes. Two days later my engine light came on again so I checked it and it came up P0507 Idle Speed control system-RPM too high.
Possible cause: Wiring, ISC System, ECM. Only videos I could find about the code on my car it only gave instructions on how to do a relearn for the idle control system. My question is, do you think I should do this or what else could it be? I'm not sure if Maxima has an Idle Air Control Actuator or valve.
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Wednesday, March 9th, 2022 AT 4:54 PM

12 Replies

Tiny
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Hello,

The code P0507 can get triggered due to an issue with the throttle actuator, intake air leak or an issue with the PCV system.

Are you experiencing any drivability issues?

Checking for intake leak can be a good place to start.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

I have attached the general diagnostics for this code below. To perform the diagnostics completely you will need to have a specialized scan tool.

Please let me know of any questions.
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Wednesday, March 9th, 2022 AT 7:27 PM
Tiny
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Aight. So, where is the Electronic Throttle Control Actuator? I can't find a diagram/component location image of car let alone the Electronic Throttle Control Actuator.
Just so you know before I replaced both Camshaft Position Sensors and cleaned the Throttle body plate (outside and inside) as well as unplugging the connector and cleaning it with electronic cleaner, there was only the P0340 code and the car would almost not start and when it did it rode very bad, but when I changed those Sensors, it drove better. Now it starts fine but the RPMs are over 200 RPMs high and they will rise and fall whether I'm in park, neutral or drive. Another question, where did you get those three images you sent me from or what website? Because when I opened the 1st image, I tried to click on the blue highlighted text See: Idle Speed>Programming and Relearning>Idle Air Volume Learning.
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Thursday, March 10th, 2022 AT 3:38 PM
Tiny
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The electronic throttle body is called the throttle actuator. As this is controlled electronically and not with a cable that will find on a traditional throttle body.

I have attached the throttle relearn process below. That is typically needed when the actuator gets replaced.
These are from Alldata, you won't be able to search it online.
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Thursday, March 10th, 2022 AT 6:12 PM
Tiny
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So, I didn't have any Throttle body codes before replacing the Camshaft Position Sensors (bank 1 and 2) cleaning the Throttle body as well as disconnecting the electrical connector, cleaning it then reconnecting it. So, my question is, could the P0507 code mean the system just needs to Learn the Closed Throttle Position (Closed Throttle Sensor Output Learning) and not the Idle Air Volume Learning, since I didn't replace the ECT or ECCS Control Unit and just disconnected the ECT connector to clean it? Thanks for your time.
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Monday, March 14th, 2022 AT 9:55 AM
Tiny
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Yes, doing the relearn should be the first step before performing any other repair.
One thing to keep in mind that you want to make sure all the connectors are dry before plug in.
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Monday, March 14th, 2022 AT 1:20 PM
Tiny
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So, since I just disconnected the ETC to clean the connector should I do only the Throttle valve closed position learning? Or do I need to do both? What are the steps for the Throttle Valve closed position learning? Because the pic just says turn ignition to on position then turn off and wait 10 seconds and make sure the Throttle valve moves during after the 10 seconds by confirming the operating sound. Is that it?
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Monday, March 14th, 2022 AT 5:34 PM
Tiny
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You want to do volume learning. If you look at the procedure that I have uploaded, that is the one you want to follow.
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Tuesday, March 15th, 2022 AT 11:05 PM
Tiny
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So, you mean this picture (without Consult-II)?
-Turn on car to warm up then turn it off.
-Wait 10 seconds turn the ignition on and wait 3 seconds.
-Then fully depress Accelerator Pedal and Fully release Accelerator Pedal 5x's within 5 seconds.
-Then wait 7seconds.
-Fully depress Accelerator Pedal and wait 20 seconds until The MIL stops blinking and stays on.
-Release Accelerator Pedal within 3 seconds of The MIL staying on.
-Then Start the engine and let it Idle and wait for at least 20 seconds.
Is that right? And once you warm up engine turn it off, wait 10 secs, then turn it on and wait 3 seconds You do not turn the ignition from the on position until the end when you start engine to let it idle waiting 20 seonds? Is this correct?
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Wednesday, March 16th, 2022 AT 9:09 AM
Tiny
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Also, I checked the codes again this morning and it still has P0507 and now P0300 (random misfire) could the P0300 be showing up cause I need to do the relearn procedure?
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Wednesday, March 16th, 2022 AT 9:23 AM
Tiny
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Yes the P0300 could be a byproduct of the relearn issue.
Are you experiencing issues since the P0300 came up?
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Friday, March 18th, 2022 AT 12:18 PM
Tiny
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I'm not sure, but it's only showing the P0507 code now. So I should do the relearn process correct?
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Saturday, March 19th, 2022 AT 12:12 PM
Tiny
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Yes. Get the relearn finished, clear the code.
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Saturday, March 19th, 2022 AT 4:46 PM

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