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
Repair Instruction: Initialization: Initialization
- PROCEDURES NECESSARY WHEN CABLE IS DISCONNECTED/RECONNECTED TO BATTERY TERMINAL PROCEDURES NECESSARY WHEN CABLE IS DISCONNECTED/RECONNECTED TO BATTERY TERMINAL
Necessary Procedures Effect / Inoperative Function when Necessary Procedures is not Performed See Reset back door unlock position Back door unlock function Refer to INITIALIZATION NOTE:- After the battery is reconnected, be sure to wait 10 seconds or more before attempting to start the engine. The engine may not start immediately after the battery is reconnected.
- PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED
Replacement Part Necessary Procedures Effect / Inoperative Function when Necessary Procedures are not Performed See ECM Register VIN. DTC P0630 is output Refer to REGISTRATION Automatic transaxle assembly - Transaxle compensation code input
- Road test
- Reset memory
Large shift shock Refer to PRECAUTION - Valve body assembly
- Shift solenoid valve SL3 and/or 4
- Transaxle compensation code initialize
- Road test
- Reset memory
Large shift shock Shift solenoid valve SL1 and/or 2 Road test Large shift shock TCM (If possible, read the transaxle compensation code from the previous TCM) Possible - Transaxle compensation code input (Into the new TCM)
- Reset memory
- Road test
Large shift shock Impossible - Transaxle compensation code initialize
- Reset memory
- Road test
Large shift shock Tire pressure warning ECU - Register transmitter IDs.
- Initialize tire pressure warning system.
- When DTC detection conditions of "transmitter ID not received" DTC is met, tire pressure warning light blinks for 1 minute, and then illuminates
- Tire pressure monitoring function
Refer to REGISTRATION for Registration
Refer to INITIALIZATION for InitializationTire pressure warning valve and transmitter Yaw rate and acceleration sensor - Clearing zero point calibration data
- Yaw rate and acceleration sensor zero point calibration
- Steering angle sensor zero point calibration
- VSC control is prohibited or operation is incorrect
Refer to CALIBRATION Skid control ECU (Brake actuator assembly) - Clearing zero point calibration data
- Yaw rate and acceleration sensor zero point calibration
- Steering angle sensor zero point calibration
- VSC control is prohibited or operation is incorrect
Refer to CALIBRATION Steering angle sensor (Spiral cable sub-assembly) - Clearing zero point calibration data
- Yaw rate and acceleration sensor zero point calibration
- Steering angle sensor zero point calibration
- VSC control is prohibited or operation is incorrect
Refer to CALIBRATION - Power steering ECU
- Power steering column assembly
Perform rotation angle sensor initialization and torque sensor zero point calibration - Power steering warning light comes on
- EPS control
Refer to CALIBRATION Door control receiver assembly (w/o Smart Key System) Registration Wireless door lock control system
(w/o Smart Key System)Refer to REGISTRATION Key (w/o Smart Key System) Steering lock actuator assembly (w/ Smart Key System) Registration - Wireless door lock control system
(w/ Smart Key System)
- Entry operation
- Engine start
(w/ Smart Key System)
- Steering lock and unlock
Refer to REGISTRATION Certification ECU (w/ Smart Key System) ID code box (w/ Smart Key System) Key (w/ Smart Key System) Transponder key ECU (w/o Smart Key System) Registration Engine starting
(w/o Smart Key System)Refer to REGISTRATION Key (w/o Smart Key System) Occupant classification ECU - Perform zero point calibration
- Registration ECU data
- Occupant classification system
- Passenger airbag ON/OFF indicator
- Airbag system (Front passenger side)
- Seat belt warning system (Front passenger side)
Refer to INITIALIZATION - Sliding roof drive gear sub-assembly (Sliding roof ECU)
- Sliding roof housing
- Sliding roof glass
Initialize sliding roof drive gear sub-assembly - Auto operation
- Jam protection function
- Sliding roof operation after ignition switch is turned off
Refer to INITIALIZATION
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.