Toyota Corolla Quiz
Engine control system

Ecm (1zz–fe)

In this manual: Engine control system
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
9steps
~54min
2/5difficulty
Done 0 of 9
Replacement 1. Disconnect battery negative terminal 2. Remove glove compartment door assy 3. Remove ecm
Toyota Corolla. Remove ecm
  1. Remove the 2 clips using a clip remover. Then, open the cover.
    Toyota Corolla. Remove ecm
  2. Disconnect the 4 ecm connectors.
  3. remove the wire harness from the wire harness clamp.
    Toyota Corolla. Remove ecm
  4. Remove the 2 bolts.
  5. unfasten the claw and clip, then remove the ecm.
4. Remove ecm cover
Toyota Corolla. 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)
Toyota Corolla. Remove ecm bracket no.2
  1. Remove the 2 screws, then remove the ecm bracket no.
2. 6. Remove ecm bracket no.1
Toyota Corolla. Remove ecm bracket no.1
  1. Remove the 2 screws, then remove the ecm bracket no.
7. Remove ecm bracket no.3 (Delco made)
Toyota Corolla. Remove ecm bracket no.3
  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
Toyota Corolla. 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.
  2. Connect the hand–held tester to the dlc3.
  3. Turn the ignition switch on.
  4. 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.

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