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Posted on Jan 02, 2017
it is the Transmission Control Unit. you have to find the reason why the TCU is flashing the D4 fault code. not replace the unit. have your vehicle scanned for another code. your transmission or transaxle is giving you a warning that something is wrong .
Posted on Nov 21, 2008
You more than likely have a problem with the TCU (transmission control unit). It may also be other things. You need to seek professional help before spending money on a TCU that may or may not be the problem. It takes an expert to diagnose this problem.
Posted on Oct 03, 2009
Need a scanner ,read the codes , do what the shop manual tells you to do regarding testing and repair.
Gonna take a guess cruse control and tach problems probably a wheel sensor possible the ecu.
Posted on Mar 23, 2010
I assume you mean the one on the dash. This is an indicator that there is a problem in your braking system. Make sure it's not low on Brake fluid and have the brake system checked or check it yourself. If your going to check it yourself I recommend the Haynes repair manual on your vehicle as a reference.
Posted on Jul 30, 2010
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