Car: 99 CX Hatch
Motor: 00 USDM H22a4

I installed my Zeitronix WB02 sensor today and soldered all the ECU connections. I went to start my car and nothing happens. I have power getting to the accessories. there is no voltage when the key is in the ON position at the main power pin at the ECU. What fuse controlls this connection?

I checked the fuel inj fuse and it was fine. I lost my diagram for the drivers side fusebox so I don't know what to check for there.

 

Any suggestions? Could it be the main relay? I hear no clicking coming from it

 

its something you did because an o2 sensor itself wont cause the car not to start

you knocked something loose, blew a fuse, wired it wrong etc. 1000 different things could be the cause. just approach it like a normal "nostart" problem and see where that gets you. check voltages at the battery, starter, key, etc

 

did you disconnted the battery before you wire the wbo2? check all the under hood and dash fuses.

 

What does power need to go through before it gets to the ECU? I checked EVERY fuse under the hood and they are all good. I'm gonna start checking the dash ones later.

There is ZERO voltage at the ECU. Something is broken in line with that. I can't figure out what though.

 

Possibly a bad ground maybe?

 

it would be at the dash fuse box if your main relay dosent have power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">Possibly a bad ground maybe? </TD></TR></TABLE>

DING DING DING

It turns out I accidentally pulled the ground wire for my alarm out of its terminal when I unhooked the battery. My alarm has auto-immobilization built in which creates an open circuit when the alarm is disconnected. Connect the ground and she fired right up.

Now if I could only get it to run smooth on Uberdata....

 

well done