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.
Tc TERMINAL CIRCUIT
Turn ignition on. Check voltage between terminals Tc and E1 of Data Link Connector No. 1 (DLC1). See Figure. If battery voltage is present, circuit is okay (ABS/TRAC/VSC ECU may be faulty if light does not blink when connecting a jumper wire between terminals Tc and E1). If battery voltage is not present, check circuits between ABS/TRAC/VSC ECU and DLC1 and circuits between DLC1 and ground. See WIRING DIAGRAMS . If circuits are okay, replace ABS/TRAC/VSC ECU.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.