2004 Rx330 ECU pinouts

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Jul 11, 2016 | 06:09 AM

jasvinderp

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From: NY

2004 Rx330 ECU pinouts

I m getting po330 on my 2004 RX330 and trying to figure out whats going on because truck is running very smooth with no issues but keep on getting PO330.

Just looking fot ECU pinouts so I can diagnose the error.

Thanks. Here is the picure of PINS:

Jul 11, 2016 | 07:50 AM

dganapol

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From: California

I don't understand your question PO 330 is the knock sensor.

David

Jul 11, 2016 | 09:20 AM

jasvinderp

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From: NY

I am looking for Knock sensor wires on ECU

To get the read out on the knock sensors, I am looking for ECU Pinouts. What two pins are for knock sensors on ECU?

Jul 11, 2016 | 10:38 AM

psycle01

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Harness E9, should be pin 1 (black) and pin 28 (white) for Knock sensor 1, pin 2 (red) and pin 20 (green) for Knock sensor 2.

Jul 11, 2016 | 10:49 AM

dganapol

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From: California

Don't go to the ECU, find the knock sensor plug and ohm it out. Also take a hammer to the block while you are on the pins and see if it generates some voltage, don't bang the crap out of it just small pinging hammering. Check both of them.

David

Jul 11, 2016 | 11:34 AM

jasvinderp

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From: NY

Quote:

Originally Posted by psycle01

Harness E9, should be pin 1 (black) and pin 28 (white) for Knock sensor 1, pin 2 (red) and pin 20 (green) for Knock sensor 2.

Pin 1 and 2 are both white color on e9?

Jul 11, 2016 | 12:06 PM

psycle01

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From: NC

Only thing I can suggest is to try it. Attached is the diagram I went by.

Attached Files

engine-controls-3-of-6.pdf (49.5 KB, 1032 views)

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Jul 12, 2016 | 05:19 AM

psycle01

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From: NC

Quote:

Originally Posted by jasvinderp

Thank you, psycle01: I checked the wiring again and you were right . Checked the wiring as per diagram and already resolved the issues. No more check engine light.

Thanks again!

Glad you got it sorted!

Jul 12, 2016 | 08:21 AM

#10

dganapol

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From: California

Quote:

Originally Posted by jasvinderp

Thank you, psycle01: I checked the wiring again and you were right . Checked the wiring as per diagram and already resolved the issues. No more check engine light.

Thanks again!

Hi!!

Can you let us know what you found and how you fixed the problem.

Thx,
David

Jul 12, 2016 | 11:20 AM

#11

jasvinderp

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From: NY

Knock Sensor 2 circuit high PO330

With engine running (using multimeter)check the reading bewteen PIN 1 and 28 and compare with 2 and 20.

My test showed that knock sensor 2(pin 2 and 20) was showing totally different reading consistantly then Knock sensor 1(pin 1 and 28), even when I knocked on the engine with a hammer (Gently).

Now after confirming that the problem is a BAD knock sensor since reading is not changing even when I knocked on the engine, instead of disassembling half of my engine to replace it, I just cut the wire of pin 2 (RED) and connected it to pin 1 (Black) on ECU side and cut pin 20(green) and connected it to Pin 28 (White) on ECU side. IT's plug E9 in the picture.

No more check engine light with error code PO330.

Please do it at your own risk, I am not responsible if you damage anything while attempting this.

Last edited by jasvinderp; Jul 12, 2016 at 11:37 AM.

Mar 10, 2018 | 08:51 AM

#12

Eliaquim

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Joined: Feb 2014

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From: Angola

Could please post links to other files?

Hi! I am trying to solder my engine wire harness and the file you linked to is helping me a lot. It's engine-controls-3-of-6.pdf. Could you please post the other files in the sequence?

Thank you!

Quote:

Originally Posted by psycle01

Only thing I can suggest is to try it. Attached is the diagram I went by.

May 24, 2018 | 10:15 AM

#13

jdesai

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Joined: May 2018

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From: Texas

instructions/diagram to access ECU on 2004 RX330

I'm trying to access the ECU behind the glove compartment to get a good view of the cable connections. I am getting a knock sensor code and wanted to check the connection and wiring on the ECU. What else besides the glove compartment do I need to remove?