i ride

Hey, My car is running like complete crap, and it has code p0325 knock sensor (along with catalyst inefficiency code)... I am trying to determine if 0325 is the sensor, harness, or ECU..

The service manual says to swap the connections from the 2 knock sensors, to see if the code changes to P0330 (the other side knock sensor)

makes sense...but i have no clue where the harness is for the 2 EC1 connectors.

does anyone know where the two connectors EC1 are ??

thanks

GS4_Fiend

iTrader: (22)

The ECU is inside the engine compartment in a black box right near the radiator

i ride

yea i know where that is. i wasnt going to try to take apart the ecu plug and swap pins. apparently there are. connectors between the knock sensors and the ecu, called EC1. Thats how the service manual says to test.

and oh yea, its an 01 430

i ride

here is a pic. I just dont get where the connector is. is it under the intake like the sensor ? it wouldnt make sense to pull the intake off, and swap the connectors and put it back on. the manual makes it seem like an easy swap to test.

TWong350

iTrader: (8)

Yes, it's likely under the intake. Here's another image of under the manifold.

i ride

Does anyone have a part number or a link for the sub harness connectors that everyone here says to replace when doing the knock sensors ?

I have the manifold off, ordered the sensor, i cant find harness anywhere.

i ride

nevermind. the guy at sewell hooked me up.

its part number 8221907010

i ride

so i found the EC1 wire connector. it is the 2 connectors that go to each sensor, and then they go into one connector over the manifold. So you can actually test your sensor if you get a code for just one without removing the manifold.

Turns out the wire going to the sensor that I got the code for was frayed. Its still intact and has continuity from one end to the other, but I guess it could have shorted and stopped the sensor from giving its signal ? i dunno. but it seems most likely.

vwynn

iTrader: (4)

rats like to get inside there n eat crap... n crap poop.



i did mine.. u can see rat poop.. n chewed up wires.

i ride

did you put the new connecting harness back inside those plastic wire connector housings ? it seems like that will be the hardest part of the job. thinking about just routing around it.

vwynn

iTrader: (4)

all i did was solder the broken wire together... heat shrink wrap and then electrical tape... n then replaced both knock sensor.

i ride

wtf... thats not the right part number I got from sewell. got the part from toyota dealer..doesnt fit. . After i tried it he looked up with my vin, he cant find anything.says its for ES 300 and a few others

If i didnt read that some guys replaced it i would think it doesnt exist. Does anyone know the part number for the knock sensor harness for gs430 ?? i gotta search again. maybe the guys who replaced it had a gs 300. this sucks

vwynn

iTrader: (4)

they dont make replacement harnesses for our cars... least thats what ive been told n i cant seem to find a clip down the harness that lets you upclip it.

i ride

ugh ok thanks. that makes sense why I cant find one.

Yea i thought maybe it was hidden in that plastic wire protector thing. The clip directly behind the manifold on top of the black plastic wire protector is where the 2 sensor wires come into one, and clips back into the main harness. thats why i figured it was replaceable.

Ill just try to fix this one and i replaced the sensor. Crossing fingers I dont have to take this manifold off a third time.

i ride

fixed. finally. was a bad sensor