OEM 2005 Toyota Corolla Engine Control Module

2005 Toyota Corolla Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2005 Toyota Corolla?

  A: Before replacing the Engine Control Module (ECM) users must disconnect the negative terminal of the battery. Begin by unscrewing the glove compartment door stoppers then bend the top part of the door to free the stoppers before lifting the door out from its holders. The ECM removal process begins with a clip remover device that removes two clips and allows access to the cover after disconnecting four ECM connectors from the clamp. Finally, the ECM is extracted through the unfastening of the claw and clip. Firmer grip on the ECM is possible before dismantling its cover. The Delco-made ECM bracket requires complete removal of its four screws yet Denso-made brackets need screw removal from both No. 2 and No. 3 sections. The ECM bracket installation begins with No. 3 bracket receiving 2 screws torqued to 3.2 Nm (33 kgf.cm, 28 in.lbf) followed by No. 2 bracket getting 2 screws torqued to the same value and finishing with main Denso bracket having 2 screws torqued to 3.2 Nm and ending with Delco bracket receiving 4 screws torqued to 3.2 Nm. The installation of new ECM covers requires the ECM to be secured with 2 screws reaching 3.0 Nm (31 kgf.cm, 27 in.lbf) torque while reconnecting all 4 ECM connectors before securing the clamp and applying 2 clips to the cover. The installation required reinstalling the glove compartment door assembly while connecting the battery negative terminal securely at 5.4 Nm (55 kgf.cm, 48 in.lbf). Register the VINs for the 1ZZ-FE and 2ZZ-GE engines as the last step.