2003 V6 Air/Fuel sensor LAF fuse blowing
#1
2003 V6 Air/Fuel sensor LAF fuse blowing
I'm about at wit's end with this one. Have replaced both sensors, checked all the wiring, but the #4 15a fuse keeps blowing. How far back from the connector should I be checking wiring? I am going back as far as I can see.
#2
1. Have you tried unplugging both front and rear air/fuel ratio sensors, and see if the fuse still blows?
2. If the fuse still blows with the two air/fuel ratio sensors unplugged, at Connector C251, test for continuity to body chassis/ground at terminal pin wires #12 (it will be Blu/Wht on the male side, and Wht/Blk on the female side). There should be no continuity.
Leave the connectors for the front and rear A/F ratio sensors unplugged when you test for continuity.
There are actually a few other connectors that I haven't mention yet.
2. If the fuse still blows with the two air/fuel ratio sensors unplugged, at Connector C251, test for continuity to body chassis/ground at terminal pin wires #12 (it will be Blu/Wht on the male side, and Wht/Blk on the female side). There should be no continuity.
Leave the connectors for the front and rear A/F ratio sensors unplugged when you test for continuity.
There are actually a few other connectors that I haven't mention yet.
#3
You may already know; but, just to be clear: your V6 has:
- front A/F ratio sensor
- rear A/F ratio sensor
- front secondary heated oxygen sensor
- rear secondary heated oxygen sensor
#6
I will check it as well. It's been frustrating, because I was showing something like 4 codes. Replaced the sensors and fuse and thought I was good to go, but now I'm getting 0135 and 0155 i believe (haven't checked in a while).
Thread
Thread Starter
Forum
Replies
Last Post
BHoward711
General Tech Help
2
04-12-2010 08:57 PM