Code 52

1994 TOYOTA COROLLA
186,523 MILES
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KAIKIING
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Hi,

My car listed above (AE110) with 16 valve EFI engine found error 52 after diagnostic jumper test. May i know what might be the problem is and how serious will be the problem cause? Can lead me some steps for checking?

Thanks.
Sep 30, 2011 at 1:56 PM
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KHLOW2008
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DTC 52 - KNOCK SENSOR SIGNAL (1.8L)

DTC 52 is set when ECM detects an open or short in the knock sensor circuit with engine speed between 1200-6000 RPM. Check for open or short in knock sensor circuit, a loose or faulty knock sensor of faulty ECM.



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Sep 30, 2011 at 2:05 PM
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MHPAUTOS
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This code is for a knock sensor, before doing anything i would clear the code and test drive then re scan with an OBD11 scanner report back if there is a new code set.
Sep 30, 2011 at 2:06 PM
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KAIKIING
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Hi,
If not wrong my car cannot use any scan tools for scanning. I only found a diagnostic socket in front engine part. Can it be scan using scan tools?

Thanks.
Sep 30, 2011 at 2:23 PM
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KAIKIING
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Another thing. I accidentally start the engine when still jumper at the diagnostic port. Will that make any effect to my car ECM?

Thanks
Sep 30, 2011 at 2:25 PM
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MHPAUTOS
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no it will not.
Sep 30, 2011 at 2:28 PM
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KAIKIING
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Can anyone show me how will exactly the knock sensor look like for my ae110? many many thanks.
Sep 30, 2011 at 2:42 PM
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KAIKIING
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mphautos, may I know your answer of no it will not is answer for my which question? Sorry for asking that.
Sep 30, 2011 at 2:45 PM
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KHLOW2008
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Refer to third diagram for sensor.
Sep 30, 2011 at 2:56 PM
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MHPAUTOS
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Leaving the check connector in will not do any harm. Do not leave it in there all the time, but for testing it is not a problem.
Oct 1, 2011 at 12:08 AM
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KAIKIING
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Thanks a lot mhpautos.
Oct 1, 2011 at 1:39 AM
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KAIKIING
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Can someone show me the location of the sensor to me? Cause I cannot find the sensor. Thanks
Oct 2, 2011 at 12:03 AM
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KHLOW2008
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Refer to diagram.
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Oct 2, 2011 at 9:13 AM
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KAIKIING
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May I know the error code can reset for this car or not? If can please let me know how to reset it so that i can test with new sensor. Thanks
Oct 2, 2011 at 12:54 PM
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KHLOW2008
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Disconnecting the battery would reset the error code.
Oct 2, 2011 at 1:57 PM
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KAIKIING
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No other way to do that besides this? No jumper an do reset? Thanks a lot. I will try it soon.
Oct 2, 2011 at 2:26 PM
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KHLOW2008
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Either pulling the EFI fuse or disconnecting the battery is the only way.
Oct 2, 2011 at 2:36 PM
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KAIKIING
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I try pulling the EFI fuse, but I found the fault code still exist although I have not tried the car yet. Does that make sense?
Oct 2, 2011 at 2:49 PM
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KAIKIING
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Hopefully my ECM function normally or else that really going to cause me trouble.
Oct 2, 2011 at 2:53 PM
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19JAYBE74
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I created account just to upload this image. This was the money shot.
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Jul 1, 2018 at 5:36 PM