ADROX

installed a resistor in my knock sensor harness to try to get it through inspection. the resistor didn't work. upon further inspection found that the previous owner at one point tried to bypass the harness by looping the wires. not sure how the wires are actually supposed to run. also found what looks like a repair or possibly the wire that goes there but just not sure since it runs through the harness on both sides of the apparent repair. really trying to solve this problem myself and not have to pay the dealer. I know this is gonna be a difficult issue seeings how it's a california based care but hopefully someone can shed some light on this for me. thanks.
tried uploading a pic of the pc but not letting me do that for some reason or just not doing it the right way

2brosgixxer

To upload a pic, you need an account like Photobucket. Upload the pic there, copy the direct link url. Then come here and find the little attach photo icon above where you type for your posts then paste that direct link from Photobucket.

ADROX

ok thanks. yeah kept asking for the link.

bobflood

I have had excellent luck finding wiring diagrams on this site.

Auto - Online Repair Info
http://search.ebscohost.com/
ID: rrcc
PW: rebsco
Select: Auto Repair Reference Center
Fill in: Find Your Vehicle
Follow prompts down to Wiring Diagrams.

asand1

iTrader: (1)

If your referring to electrical tape and only one wire connecting to the KS itself, that is the factory configuration. One wire is signal, the other a shield.

ADROX

yeah there's a single wire coming out of the main harness and that has a wire that appears to be spliced into it. those both go to the two prong connector that then runs down to the knock sensor.

asand1

iTrader: (1)

Heres how I did mine.
http://forums.maxima.org/4th-generat...tall-pics.html

The resistor doent replace just the sensor, it goes into the connector mounted to the intake manifold and replaces the sensor AND the sub-harness.

ADROX

the area where the splice is is before the subharness. basically in between the end where you installed the resistor and the main wiring harness is where the apparent splice is. looking at your pics I think you are talking about the ks end as far as there being a single wire. still trying to upload the pics through photobucket but not working for me.

ADROX

http://s1150.photobucket.com/albums/o618/ADROCK2012

ADROX

that's what it comes up as^. hopefully it works when you click on it. stupid ghetto *** computer

ADROX

ADROX

ok so now that it took me an hour to get that up lol. anyway can you see what I'm talking about? that plugs into the sub harness. there is an apparent repair there next to it but don't think that has anything to do with it. also shouldn't there be power to that connection if the key is on even if the motor is not running. tried using an ohm meter and got nothing. the taped of connector is the beginning of the sub harness that runs to the ks.

asand1

iTrader: (1)

Your pictures are to grainy and small.

There should be electrical tape two inches from each end, inside the plastic loom of the subharness pictured below. Ive read before that the main wiring harness is the same construction, with one wire connecting to a shield, and taped.I dont think there will be a voltage present, the KS generates its own voltage and the ECM measures that. You need to down- load the FSM for testing procedures.
To install a resistor, you unplug the left end of the sub harness (in the image below) from the main harness, and plug the resistor into the main harness plug. The resistor needs to be 470K ohm
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asand1

iTrader: (1)

Down load the FSM here.
http://www.nicoclub.com/FSM/maxima/

ADROX

yeah I stuck it in the connection that you are saying, which is the end that is hanging there that I am questioning the 'splice', with a 470k ohm resistor as I had read in the forums and reset the ecu under the dash but it still set off the code again when the 0111 popped back up. that's why I was thinking the wire that looks as though it's spliced was someone trying to loop or bypass the sensor. would have thought the resistor would have kept the 0304 code off all together if it was in there.

asand1

iTrader: (1)

Do you have any other codes?
An O2 or MAF code (some others too) will trigger a false KS code.

ADROX

had the 0102 maf code and 0210 fuel injection system left bank lean awhile back but got them cleared by cleaning the maf and replacing the front o2 sensor. ks stayed as a ghost code after the system was done testing and a week later the 0111 came up of course along with the 0304 ks but that's it.