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Car Forum / Pontiac / Pontiac Cars / October 2007

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Okay 99 grand am  Check engine light code p1652

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jeremy0028@gmail.com - 28 Oct 2007 06:02 GMT
I was able to solve and fix the other codes but dont know what this
code means p1652. Tried internet search think its one of these but not
sure.  This is the only one i have left so i could register the car
and turn off the check engine light..

P1652 Idle Air Control Valve Control Circuit
P1652 Powertrain Induced Chassis Pitch Output Circuit

Thanks in advance.
David Courtney - 28 Oct 2007 16:46 GMT
According to my (Auterra) scanner, the code P1652 for a GM vehicle is
"Cooling Fan 2 Relay Control Circuit"... which makes sense because you
already said you messed with the wiring for the second fan.
   I don't know how the ECM "tests" the cooling fan relay control
circuit... but something you did is preventing the ECM from getting a "good"
test result.

>I was able to solve and fix the other codes but dont know what this
> code means p1652. Tried internet search think its one of these but not
[quoted text clipped - 5 lines]
>
> Thanks in advance.
jeremy0028@gmail.com - 29 Oct 2007 19:04 GMT
>     According to my (Auterra) scanner, the code P1652 for a GM vehicle is
> "Cooling Fan 2 Relay Control Circuit"... which makes sense because you
[quoted text clipped - 18 lines]
>
> - Show quoted text -

Well i'm taking it to my mechanic to check it out. Thanks for the
info. Looks like Gm did a update for there OBD II codes So it could be
powertrain induced chassis output circuit or Cooling fan relay
circuit. Will let you know what happens.

Here are a few links where i got the info

GM OBD II DTC

http://z28.com/forum/showthread.php?t=36071
http://myweb.accessus.net/~090/dtcobd2p.html#pow
David Courtney - 29 Oct 2007 20:30 GMT
That "Powertrain Induced Chassis Pitch Output Circuit" sounds like it's
part of an "Electronic Suspension Control" system that your car probably
doesn't have:  http://www.gearchatter.com/viewpost14009.php

>>     According to my (Auterra) scanner, the code P1652 for a GM vehicle is
>> "Cooling Fan 2 Relay Control Circuit"... which makes sense because you
[quoted text clipped - 31 lines]
> http://z28.com/forum/showthread.php?t=36071
> http://myweb.accessus.net/~090/dtcobd2p.html#pow
 
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