Location of knock sensor?

ELIJAHADEGAHI

MEMBER
2012 TOYOTA COROLLA
1.8L
4 CYL
AUTOMATIC
173,638 MILES

Please can you tell me or show me the location of knock sensor 1 for Toyota corolla 2012 2ZR, the car is not selecting last gear, so when I scan the car is complaining of knock
sensor 1.

Thursday, September 12th, 2019 AT 5:47 AM

5 Replies

KASEKENNY

MECHANIC
18,907 POSTS

Hi,

Here is the location of the knock sensor and the procedure to remove and install it. Please let me know if you need more info. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed. Thanks

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Wednesday, September 18th, 2019 AT 3:20 PM

CARLOSJOSE

MEMBER
1 POST
2001 TOYOTA COROLLA
1.5L
4 CYL
2WD
MANUAL
140,000 MILES

I went to check the check engine problem but the mechanic tells me that the error signal 52 knock sensor but my car is year 2001 he had a motor 4a but very likely change for 5a with a collision. Apparently does not have the sensor on this engine since there is so I can do ?. Also see this product according
http://foro.club-toyota.com.ar/viewtopic.php?f=22&t=1073
This error code is for vehicles with lower year 1996 and mine is 2001, which believes that the mechanic did wrong Did they done wrong? as I can solve?
thanks for everything.

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Saturday, December 19th, 2020 AT 10:06 AM (Merged)

KHLOW2008

MECHANIC
41,814 POSTS

The engine control unit is for an engine using a knock sensor and since the replacement engine does not have one, it would throw the code. Unless you install a knock sensor if not, you would not be able to clear the code.

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Saturday, December 19th, 2020 AT 10:06 AM (Merged)

DAN DAN

MEMBER
1 POST
1998 TOYOTA COROLLA

1998 Toyota Corolla 4 cyl Automatic 170000 miles

I recently purchased a set of Halo spark plugs (said to improve mpg by about 10%), and discovered afterwords on their warenty that the timing will need to be adjusted. It sounds as though a motor management system or knock sensor (are those two different things, or the same thing with two names) will adjust the timing automagically as long as I disconect the battery before instalation. Does my car have a motor management system or a knock sensor? If not, how easy is it to get the timing adjusted? Thanks

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Saturday, December 19th, 2020 AT 10:06 AM (Merged)

MMPRINCE4000

MECHANIC
8,548 POSTS

Timing is controlled by the PCM (Power train Control Module). The knock sensor retards timing when it detects pre-ignition.

What they are saying, I think, is that if you disconnect the battery the PCM will re-learn engine parameters (timing/fuel) based on feedback from the engine sensors.

Unless equipped with a distributor, base timing in not adjustable.