Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Principle Of Operation, TCS Active (Full Load Disconnection): Notes
When the TCS is activated, the TCS control module puts out a 62 Hz PWM signal from pin 21. The PWM signal is received on pin 38 of the MOTRONIC control module which then disconnects the full load enrichment function.
Using a voltmeter, a reading of about 6 V should be obtained on pin 38 of the MOTRONIC control module when the TCS is activated. When the TCS is inactivated, a reading of 0 V will be obtained.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.