hi anyone knows how to fix this code? i thought my alternator was the problem. At first, i had it fixed in an alternator shop. They changed the stator because it looks like the winding got burnt. so they replace everything stator, rotor, ic, diode etc. they got the stator in a honda denso alternator. i think the stator was from a 70amp alternator. so when we put it back, at idle with no load i get 13.3-13.6v but when full load with steering i get 10.2-11v (before i get 8.7v). so i thought the stator must be wrong. We put a new alternator and still get the same voltage (but doesn't dip below 10v). i had it scanned and p1627 showed up. alternator Load Sensor Input High, where is that sensor hehe

 

Anyone

 

OK... I am speculating (fancy way of saying ...I'm only guessing) I would guess the sensor is integrated in the ECU, reading the voltage input and output (this would also drive the exciter load to match the output required to the draw).

Did you clear the code before testing with the new alternator? Did you do a load test to your Battery? (Possible bad cells, low voltage (amperage) can cause weird things to happen in the electrical system).

Best of luck.

Motor on!

 

yeah we did, unfortunately, voltage is still low at full load :(, changed battery the voltage it still the same...

 

You running a pulley? By that I mean a oversized crank pulley?
Did they change the voltage regulator? Yes..alternator is the same DENEO as the Honda of THE SAME AMPAGE, just different "ears" on the case for mounting...

 

OK, my last suggestion will be to double check your Ground Straps, make sure they are clean and well connected.

I normally read 14.2+ Volts at the Alternator Output on mine.

...since your code is P1627, I assume it is a Gen 2... (he questions) if it is that should be a 120 AMP Alternator ... I know that some of the newer models have 120 and 150 AMP Alternators.

I have not run the part numbers to see if they are interchangeable but I would guess they are...

 

mine is a 06 mcsa... i've cleaned the grounds already and double checked it. i get 13.3-13.6v then if the fan will turn on it wil go about 12.5 (including moving the steering wheel) then if i turn on the a/c it will go to 10v something

this didn't happen in my previous 05 mcs

 

OK, last thing... sorry I keep forgetting about this one...did you check the Crank Pulley?

If the Crank Pulley is starting to fail as the load increases by the Alternator the separated pulley will slip and not spin the alternator properly.

Motor on!

 

@zippynh so it is safe to safe that even the stator of a denso honda is 70amps. that is ok to put in the alternator of the mini which is rated at 105amp?

yeah we checked the crank pulley and it looks ok though. weird thing is it doesn't charge when it is full load

 

Honestly not sure...
But I do know a few posts by folks (here and on ***) where they have gotten a used Honda/toyotda denso of the same amp rating, and moved the guts, no issues.
Not sure if the lower amp stator could interact with the voltage regulator....
But my guess is it will only put out 70 amps....
Sounds like you tried a new alternator...so safe to Say you got a new voltage regulator?
How are you loading up the alternator? Just lights, fan, and PS pump? Or a big amp?

 

Yeah new voltage regulator and new rotor and stator.

Lights, fan? A/c, and ps pump