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Old Nov 20, 2021 | 10:37 AM
  #30 (permalink)  
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pizzaguy
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Joined: Jun 2009
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From: Fort Worth, Texas
Default Re: Troubleshoot No start

Originally Posted by TomBishop
The starter engage, the car works just the fan never stop.
I read a lot of things also about the connection between PCTM and FCM, there is something I can do there?
This is not the RCM. This is a bad FCM. If the key is off, the line with YELLOW arrow must go to zero volts, if it goes to zero volts, the FCM must turn fan off, if it does not, the FCM is bad.
Pin 6 is the enable line, the FCM must never operate the fan motor unless that line is high (over 5 to 6 volts).


 
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