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.
2012 Scion tC Automatic TransFACTORY OEM SERVICE PROCEDURE
Vehicle Stability Control System: Precaution: Precaution
- IGNITION SWITCH EXPRESSIONS
- The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this information.
Expression Switch (Position) Engine Switch (Condition) Ignition switch off LOCK Off Ignition switch ACC ACC On (ACC) Ignition switch ON ON On (IG) Engine start START Start
- The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this information.
- TROUBLESHOOTING PRECAUTIONS
- When there is a malfunction with terminal contact points or problems with part installation, removal and installation of the suspected parts may completely or temporarily return the system to normal.
- In order to determine the malfunctioning area, be sure to check the conditions at the time the malfunction occurred, such as DTC output and the freeze frame data, and record them before disconnecting each connector or removing and installing parts.
- Since the system may be influenced by malfunctions in systems other than the VSC system, be sure to check for DTCs in other systems.
- HANDLING PRECAUTIONS
- Do not remove or install VSC parts, such as the steering angle sensor or the yaw rate and acceleration sensor, except when necessary, as they must be calibrated after removal or installation.
- Be sure to perform preparation before work and confirmation after work is completed by following the directions in the repair information when working on the VSC system.
- Be sure to remove and install the ECU, brake actuator and each sensor, etc. with the ignition switch off unless otherwise specified in the inspection procedure.
- If the ECU, brake actuator or a sensor has been removed and installed, it is necessary to check the system for problems after the parts have been reassembled. Check for DTCs using the Techstream, and also check that system functions and signals received by the ECU are normal using Test Mode.
- DTC PRECAUTION
- Warnings for some DTCs will not be cleared by just replacing the defective parts. If a warning is still displayed after completing a repair, turn the ignition switch off before beginning the procedure for clearing DTCs.NOTE:
If a part is still malfunctioning even after the DTC is cleared, the DTC will be stored again.
- Warnings for some DTCs will not be cleared by just replacing the defective parts. If a warning is still displayed after completing a repair, turn the ignition switch off before beginning the procedure for clearing DTCs.
- CHASSIS DYNAMOMETER PRECAUTION WARNING:
Secure the vehicle with a lock chain for safety.
Factory Service Tools
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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.