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Trac Light


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about to buy a sensor tester but not quite sure if i need....----trac----(light) comes on after driving a mile or so and stays on until car is shut off.(thats the only light that comes on) i can not get any readout codes. sometime car will go a little farther before light again but usually a mile consistently. i think a rear wheel speed sensor is the culprit but not real sure. any sensors on throttle body or engine that might affect this? '94 gs300 135k

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I believe the brake pedal may be your culprit, look for a sticky or broken switch. There are 2 or three switches on it.

I see only one switch (brake light switch) seems to be functioning ok..today drove car in wet conditions,trac light lit , wheel started spin, trac control started working with trac light flickering then light was out the rest of the drive. however, back on the next trip....???

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Here's how to check the codes. The "special tool" mentioned is simply a piece of wire to short the appropriate terminals. Hint: Don't short the wrong ones! :whistles:

Trac_System_Code_Retrival.pdf

DLC2_Pin_Locations.pdf

Code_Descriptions.pdf

Clearing_Codes.pdf

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Here's how to check the codes. The "special tool" mentioned is simply a piece of wire to short the appropriate terminals. Hint: Don't short the wrong ones!  :whistles:

no trouble codes are currently existing in system.(check has been done)

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