Signs of a bad IRCM?

Thomas A

Registered User
I was wondering if there are any common signs or symptoms assoiciated with an IRCM unit going bad? Thanks.

Thomas
 
This is just the fan control side of it. Signs could be the fans are not turning on at the right temps. , or staying on when the engine is off. Also if the fan does not turn on when the AC is turned on.

There is also an EEC relay inside that provides power to the EEC.

you really need a breakout box to test the IRCM and EEC. There are some tests that will see if either is bad.
 

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When mine went out it acted like the EEC was dead. The upshift light wasn't coming on, the fuel pump was running steady and the cooling fan came on.
 
Hrrmmm.... that kinda seems like maybe what my problem is. I have an extra one laying around here, so I think I'll swap it in see what happens. Might also swap in another EEC Relay. Thanks!

Thomas
 
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