I NEED A FREE WIRE DIAGRAM FOR A 2000 MAZDA MPV 2.5 02 SENSOR B1S1 CAR SIDE OF HARNESS,PLUG WAS PULLED OFF, DONT KNOW WHICH ONE DOES WHAT. PLEASE HELP!
REMOVAL & INSTALLATION
Because serpentine belts use a spring loaded tensioner for adjustment, belt replacement tends to be somewhat easier than it used to be on engines where accessories were pivoted and bolted in place for tension adjustment. Basically, all belt replacement involves is to pivot the tensioner to loosen the belt, then slide the belt off of the pulleys. The two most important points are to pay CLOSE attention to the proper belt routing (since serpentine belts tend to be "snaked'' all different ways through the pulleys) and to make sure the V-ribs are properly seated in all the pulleys.
Although belt routing diagrams have been included in this section, the first places you should check for proper belt routing are the labels in your engine compartment. These should include a belt routing diagram which may reflect changes made during a production run.
Disconnect the negative battery cable for safety. This will help assure that no one mistakenly cranks the engine over with your hands between the pulleys, and that the cooling fan cannot activate while servicing the belt(s).
NOTE: Take a good look at the installed belt and make a note of the routing. Before removing the belt, make sure the routing matches that of the belt routing label or one of the diagrams in this book. If for some reason a diagram does not match (you may not have the original engine or it may have been modified), carefully note the changes on a piece of paper.
For tensioners equipped with a 1⁄2 in. (13mm) square hole, insert the drive end of a large breaker bar into the hole. Use the breaker bar to pivot the tensioner away from the drive belt. For tensioners not equipped with this hole, use the proper-sized socket and breaker bar (or a large handled wrench) on the tensioner idler pulley center bolt to pivot the tensioner away from the belt. This will loosen the belt sufficiently that it can be pulled off of one or more of the pulleys. It is usually easiest to carefully pull the belt out from underneath the tensioner pulley itself.
Once the belt is off one of the pulleys, gently pivot the tensioner back into position. DO NOT allow the tensioner to snap back, as this could damage the tensioner's internal parts.
Now finish removing the belt from the other pulleys and remove it from the engine.
To install:
While referring to the proper routing diagram (which you identified earlier), begin to route the belt over the pulleys, leaving whichever pulley you first released it from for last.
Once the belt is mostly in place, carefully pivot the tensioner and position the belt over the final pulley. As you begin to allow the tensioner back into contact with the belt, run your hand around the pulleys and make sure the belt is properly seated in the ribs. If not, release the tension and seat the belt.
Once the belt is installed, take another look at all the pulleys to double check your installation.
Connect the negative battery cable, then start and run the engine to check belt operation.
Once the engine has reached normal operating temperature, turn the ignition OFF and check that the belt tensioner arrow is within the proper adjustment range.
Fig. 1: Often the underhood label will display the serpentine drive belt routing
Fig. 2: Relieve the belt tension by pivoting the automatic tensioner away from the belt, then remove the belt
Fig. 3: Verifying serpentine belt alignment in the pulley
Fig. 4: Fig. 1 Accessory V-belt routing (alternator) — Mazda MPV 3.0L engine
Fig. 5: Fig. 2 Accessory V-belt routing (power steering) — Mazda MPV 3.0L engine
Fig. 6: Fig. 3 Accessory V-belt routing (A/C compressor) — Mazda MPV 3.0L engine
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Google the code & read up (OBD PO710) if that is it I hope you know when you get codes, that they do not mean you need to replace a part Codes only point to the system with the out of range fault You need diagnostic manuals to diagnose & component test,no parts get replaced until they fail a test.
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.
Fllow you exhaust pipe. These will have a small wire harness connected. You should have 1 on the manifold, 1 downstream before convertor. Easy to change
Remove negative (-) battery terminal from battery. Remove drive belt from alternator pulley. Remove wiring harness (electrical connections) from alternator. Remove attaching bolts for alternator. Pry out alternator. Reverse steps to reinstall.
GOOD LUCK
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