Toyota Corolla (E120): Ecm (1zz–fe)

Replacement

1. Disconnect battery negative terminal

2. Remove glove compartment door assy

3. Remove ecm

  1. Remove the 2 clips using a clip remover. Then, open the cover.

  1. Disconnect the 4 ecm connectors.
  2.  remove the wire harness from the wire harness clamp.

  1. Remove the 2 bolts.
  2.  unfasten the claw and clip, then remove the ecm.

4. Remove ecm cover

  1. Take the 2 double–sided adhesive tapes off the ecm, then remove the ecm cover.

5. Remove ecm bracket no.2 (Denso made)

  1. Remove the 2 screws, then remove the ecm bracket no.

    2.

6. Remove ecm bracket no.1

  1. Remove the 2 screws, then remove the ecm bracket no.

7. Remove ecm bracket no.3 (Delco made)

  1. Remove the 2 screws, then remove the ecm bracket no.

8. Install ecm bracket no.3 (Delco made) torque: 3.2 Nvm (33 kgfvcm, 28 in.Vlbf)

9. Install ecm bracket no.1 Torque: 3.2 Nvm (33 kgfvcm, 28 in.Vlbf)

10. Install ecm bracket no.2 (Denso made) torque: 3.2 Nvm (33 kgfvcm, 28 in.Vlbf)

11. Install ecm cover

  1. Install a new ecm cover to the ecm as shown in the illustration.

12. Install ecm torque: 3.0 Nvm (31 kgfvcm, 27 in.Vlbf)

13. Install glove compartment door assy

14. Connect battery negative terminal torque: 5.4 Nvm (55 kgfvcm, 48 in.Vlbf)

15. Reset memory (a/t transaxle)

Caution

: perform the reset memory (at initialization) when replacing the ecm, engine assembly or automatic transaxle assembly.

  1. The hand–held tester only.
  1.  Connect the hand–held tester to the dlc3.
  2.  Turn the ignition switch on.
  3.  Perform the reset memory procedure from the engine menu.

Caution

: after performing the reset memory, be sure to perform the road test as described earlier.

    Share this page:

    Other materials:

    Overhaul
    1. Remove w/head taper screw plug no.2 Using a socket hexagon wench 10, remove the taper screw plug and gasket. 2. Remove valve lifter Remove the valve lifters from the cylinder head. 3. Remove valve Place the cylinder head on wooden blocks.  using sst, compres ...

    Replacement
    1. Work for preventing gasoline from spilling out 2. Remove cylinder head cover no.2 Remove the 2 nuts, 2 clips and cylinder head cover. 3. Disconnect ventilation hose Disconnect the ventilation hose from the cylinder head cover. 4. Disconnect engine wire Disconnect ...

    Inspection procedure
    1 Inspect dlc3 terminal voltage(ts terminal) Turn the ignition switch to on. measure voltage between terminals ts and cg of dlc3. Ok: voltage: 10 – 14 v 2 Check harness and connector(dlc3 – body ground) Check for open and short circuit in harness and connector between ...