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 L4-2.5L (2AR-FE)FACTORY OEM SERVICE PROCEDURE
Installation
2AR-FE ENGINE CONTROL: ECM: INSTALLATION
1. INSTALL ECM
(a) Install the 2 ECM brackets to the ECM with the 4 screws.
Torque : 3.0 Nm (31 kgf-cm, 27 in-lbf)
(b) Install the ECM with bracket with the 2 bolts.
Torque : 8.0 Nm (82 kgf-cm, 71 in-lbf)
(c) Attach the clamp.
(d) Connect the 2 ECM connectors and lower the 2 levers.
NOTICE:
* When connecting a connector, make sure that dirt, water and other foreign matter is not stuck between the connector and ECM.
* Make sure that the 2 levers are securely lowered.
2. CONNECT AIR CLEANER INLET
(a) Connect the air cleaner inlet with the bolt.
Torque : 7.0 Nm (71 kgf-cm, 62 in-lbf)
3. INSTALL AIR CLEANER CASE
(a) Install the air cleaner case with the 3 bolts.
Torque : 7.0 Nm (71 kgf-cm, 62 in-lbf)
(b) Attach the harness clamp.
4. INSTALL AIR CLEANER CAP SUB-ASSEMBLY
(a) Install the air cleaner filter element to the air cleaner case.
(b) Align the protrusion on the end of the air cleaner hose with the edge of the throttle body and connect the hose. Then, release the lock of the air cleaner hose clamp to secure the clamp.
Text in Illustration
HINT
Make sure the claws of the clamp are within the range shown in view A of the illustration.
(c) Insert the hinge part of the air cleaner cap into the air cleaner case, and then attach the 2 hook clamps.
Text in Illustration
(d) Connect the purge line hose to the clamp.
(e) Connect the No. 2 ventilation hose to the cylinder head cover.
(f) Connect the 2 purge line hoses to the purge VSV.
(g) Attach the 2 wire harness clamps.
(h) Connect the purge VSV connector.
(i) Connect the mass air flow meter connector.
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.
6. PERFORM REGISTRATION
* When replacing the ECM, input the Vehicle Identification Number (VIN) into the new ECM Programming and Relearning.
7. RESET MEMORY (for Automatic Transaxle)
* When replacing the ECM, perform the Reset Memory procedure (A/T initialization) Initialization.
Factory Service Tools
Use the Manual With the Right Hardware
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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.