I have the V6 2012...and the CEL came up and the code is P0102 ... i when on Youtube and DIY show how to check the MAF Sensor voltage on the car wiring side..... So is what i did and the video saying i suppose to have 12 vdc on the red wire when the key is ON but no engine running....and i have only 5 VDC....Can someone verify the voltage of is MAF sensor wiring side...at the plug.... The RED wire and negative pole with a multimeter Please....because i have no clue of what going on and a new MAF sensor is very expensive...and what to be sure that my MAF sensor is the problem or if it's wiring....Thanks...
MAF CODE P0102
Roger Rabbit
1 - 19 of 19 Posts
I have the V6 2012...and the CEL came up and the code is P0102 ... i when on Youtube and DIY show how to check the MAF Sensor voltage on the car wiring side..... So is what i did and the video saying i suppose to have 12 vdc on the red wire when the key is ON but no engine running....and i have only 5 VDC....Can someone verify the voltage of is MAF sensor wiring side...at the plug.... The RED wire and negative pole with a multimeter Please....because i have no clue of what going on and a new MAF sensor is very expensive...and what to be sure that my MAF sensor is the problem or if it's wiring....Thanks...
5v will be the reference circuit.
The code as you rightly say is MAF circuit low (lower than expected). Let me look at the wiring diag and get back to you
The code as you rightly say is MAF circuit low (lower than expected). Let me look at the wiring diag and get back to you
Just looked at my wiring diagram. I do not have a red wire, but I have a green/red wire on pin 2
Pin outs are as follows
Pin 1 - Pink THA - thermal signal
Pin 2 - Green/red - E2 earth (I think)
Pin 3 - Black - B+ (I know, that is confusing)
Pin 4 - Light Green - E2G (earth)
Pin 5 - Grey - Air volume signal
To my mind (and assuming my diag is correct), you should get 12v at pin 3
Pin 1 and Pin 5 are the 5v reference circuit and you should get between 0 and 5v according to air temp (pin 1) and air volume (pin 5). Pin 5 should give you around 1v at idle and 4.9v at full RPM if the MAF is working.
I will look at code set criteria and get back to you
Pin outs are as follows
Pin 1 - Pink THA - thermal signal
Pin 2 - Green/red - E2 earth (I think)
Pin 3 - Black - B+ (I know, that is confusing)
Pin 4 - Light Green - E2G (earth)
Pin 5 - Grey - Air volume signal
To my mind (and assuming my diag is correct), you should get 12v at pin 3
Pin 1 and Pin 5 are the 5v reference circuit and you should get between 0 and 5v according to air temp (pin 1) and air volume (pin 5). Pin 5 should give you around 1v at idle and 4.9v at full RPM if the MAF is working.
I will look at code set criteria and get back to you
My software does not give a detailed break down of code set criteria, just low as said above
Thank you....
i checked the data stream with my OBD2 and i have zero reading on my screen...( all dashes )
so...
i bought a new MAF sensor PN: 222040H010 on Amazon yesterday....delivery should be 3-4 weeks.
Hope this will solve my problem and i do not have a wiring problem....
Now my Rav4 V6 take the full gaz tank to make about 100km or 65 miles...
You have the 4 cyl. ??? and me the V6 maybe the wiring is not the same...
i checked the data stream with my OBD2 and i have zero reading on my screen...( all dashes )
so...
i bought a new MAF sensor PN: 222040H010 on Amazon yesterday....delivery should be 3-4 weeks.
Hope this will solve my problem and i do not have a wiring problem....
Now my Rav4 V6 take the full gaz tank to make about 100km or 65 miles...
You have the 4 cyl. ??? and me the V6 maybe the wiring is not the same...
Attachments
Hope that works for you my friend.
I did look at the V6 wiring diagram, as I have access to both.
If it is using that much fuel, just be careful of your Cats, you would not want to clog them up.
I did look at the V6 wiring diagram, as I have access to both.
If it is using that much fuel, just be careful of your Cats, you would not want to clog them up.
Hello BigPhil555 .../ EveryBody.... i just replaced the MAF sensor ( bought on Amazon ) and the problem is still there.... I disconnect the battery and joinned the two logs together to drain any current in the car and ECU.... reconnect the batterie after 5 hrs....and still check engine ON , 4wd , Trac Off....etc...
I read that doing a Gooooood...ride to make the ECU recognize the new part may solve the problem....( my last solution...)
Any suggestions....????
Thank You....
I read that doing a Gooooood...ride to make the ECU recognize the new part may solve the problem....( my last solution...)
Any suggestions....????
Thank You....
That is a pain for you. Have you pulled the same code again? Just worth checking.
As far as I know, MAF are normally plug and play. Yes I agree you may need to run the engine for a while to relearn the new settings. The ECU may still be running the old settings - do the above and let us know
As far as I know, MAF are normally plug and play. Yes I agree you may need to run the engine for a while to relearn the new settings. The ECU may still be running the old settings - do the above and let us know
Ok...i did 32 km and still the same code ...plus all the 4 Oxygen sensors low voltage....probably induce by the engine running rought....
i will bring the Rav4 to a Shop Mecanic tomorow moorning....because i need my car and now the car is not reliable....really not....
and come back for the diagnostic.....or repair solution. Maybe the ECU need an Upgrade...?
i will bring the Rav4 to a Shop Mecanic tomorow moorning....because i need my car and now the car is not reliable....really not....
and come back for the diagnostic.....or repair solution. Maybe the ECU need an Upgrade...?
Can you check your air filter? Low MAF voltage could be caused by that - a long shot, but may be worth it. Maybe run it in the drive without the filter - just another thought
Have you checked the connector and the harness? Any sighs of corrosion or damage? If you unplug the MAF and run it, do the O2's show near normal operation (default mode).
i replaced the filter ...brand new....last week....and Yes... i did check the harness...no sign of damage visible...
i'm sure it's a " nothing...small fix " solving problem because that Rav4 always been well maintain...and it's the first time i have problem....with it.
i feel your pain. A well maintained car as you say, should look after you. Thanks for the confirmation on harness, filter etc.
I would start looking for vacuum leaks or clogged lines,PCV issues somewhere, which is not much help I know!!!! Other points, but I do not think it is these at the moment, could be clogged cats, or a faulty ECM.
As you say, you have looked at the basic stuff, and I guess it is shop time.
Let us know how you get on.
I would start looking for vacuum leaks or clogged lines,PCV issues somewhere, which is not much help I know!!!! Other points, but I do not think it is these at the moment, could be clogged cats, or a faulty ECM.
As you say, you have looked at the basic stuff, and I guess it is shop time.
Let us know how you get on.
Hello BigPhil555 and Everyones...
i went to Toyota Dealer last Friday...to get my car fixed.
i checked all my fuses under the hood but i missed ONE... 🤔🤤😲 ...the one related to the EFI that give the signal to the MAF sensor....(my mistake) Cost me $110 Cand. for 1 hr troubleshooting ( it's the minimum charge ) but now i know what's the Problem....
So i replaced the 10A fuse and the Rav is running great again....
I do have a Brand New MAF sensor for sell now...lolololololol.....
Thank You for your support...and good advises
Best Regards
i went to Toyota Dealer last Friday...to get my car fixed.
i checked all my fuses under the hood but i missed ONE... 🤔🤤😲 ...the one related to the EFI that give the signal to the MAF sensor....(my mistake) Cost me $110 Cand. for 1 hr troubleshooting ( it's the minimum charge ) but now i know what's the Problem....
So i replaced the 10A fuse and the Rav is running great again....
I do have a Brand New MAF sensor for sell now...lolololololol.....
Thank You for your support...and good advises
Best Regards
So glad it is fixed, and thank you for feeding back
So they charged you $110 to tell you a fuse is blown and they couldn't change it for you?
Well...i tought i checked all the fuses....and i told him....so the Tech when with his Big Toyota Computer...and check the car.... the troubleshooting is 1 hr min. whatever they find...Could have been anything else...
@Roger Rabbit , it is a minimum fee as you say - main thing is your Rav is now running sweet
1 - 19 of 19 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
