MAF problem

I’m getting no signal from the MAF. The wires were torn from the down stream O2 sensor. I’m assuming that they shorted out. Replaced the O2 but still no signal from the MAF. I looked at the wiring diagram and seen there was a 5amp fuse but I don’t know where it is to check it.

 

Did you check the fuses in the engine bay fuse/relay box next to the battery?

You literally gave us zero info about the year, the engine (v6/v8), what drivetrain (4WD/2WD), what cab type your truck has, it makes it damn near impossible to give you any clear info on where to look.

 

Sorry! Thought I put everything in don’t know what happened. I’m new to this forum. I have a 2002 tundra with a 4.7 it’s been a good truck until I let my nephew borrow it. I’m trying to fix it up because I’m wanting to pass it down to my firstborn grandson.
It ran perfect until this happened now it’s cutting out @3000rpm and no MAF signal.
Yes I looked as the fuses but none were labeled MAF or O2.

 

It’s also a 4x4.

 

Near the top of this thread: https://www.tundras.com/threads/so-you-wanna-buy-just-bought-a-1st-gen-tundra-eh.115928/

About 4-5 paragraphs in, you'll find links to the service manual, and also the electrical wiring diagrams for the truck.

You may want to start there on it. I'm not fully understanding what got severed or where, it sounds like something got cut somewhere based on your 1st post. O2 sensor wiring is sensitive to voltage drop and resistance, it doesn't like being spliced has been my experience with other vehicles. How did you go about re-attaching the wires that got cut?

Is the check engine light lit? If yes, what are the codes?

 

Severed/ripped at the O2 sensor, plug was fine just replaced. Codes are 100 and 101.

 

I linked access to the FSM above. Have you followed the procedure to test the MAF, per the FSM?

If you don't want to look at the FSM, read this reply: https://www.tundras.com/threads/looking-like-new-ecu-time-fixed.119573/#post-3069427

 

Thanks! Will check all this out.