Wiring harness cut at 02 sensor connector bank2 sensor1 im unable to find connector w/same color code as vehicle as its a federal emission the van has 300865.4 an still runs great well taken care but wont pass smog untill i get this harness problem fixd the harness colors are BLK/W ORG BRN/YEL BRN/GRN BRAID WRAPD W/WHT CENTER WIRE the braided wire is factory shrink tape deadend any body know how to hook up the 02 sensor ive wasted three of them trying to hook them up.
SOURCE: Mazda mpv O2 sensor wires?
Put some penetrating oil on them and let it soak overnight. This will break up the rust and other build up. Make sure that it is penetrating oil, you can get it at any automotive store.
SOURCE: im trying to install a cd player in my 2000 mazda
The player or radio coming out should have a sticker on it with a diagral. If not, the only two you need to worry about is the red and bla. They are the hot and grd. and are larger than the speaker wires. Get those two hooked up, put in a cd and turn it on. Then match up the speaker outputs to the correct speaker. Should be only one wire per speaker. If not, All speaker grounds are the same color and markings. Good Luc, Ned
SOURCE: MAF, IAT, MAP and Coolant Level Sensor Problem
They share the engine wiring harness from the computer (called the PCM) and a common ground circuit, which is referred to as the signal return. So I think you need to look for a defective ground.
If you are sure the computer is the problem... remove the original one and it will have a tag on it with part numbers. Find one at a salvage yard and compare part numbers to make sure they are the same and it should work. The only thing that may cause issues is if the vehicle has a security system and a relearn/reprogram may be required
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