OEM 2007 Toyota Prius Engine Control Module

2007 Toyota Prius Parts Questions & Experts Answers

• Q: How to remove and replace the Engine Control Module (ECM) on 2007 Toyota Prius?

  A: First users should disconnect the cable from the negative battery terminal to deactivate Air Bag and seat belt pretensioners before proceeding with ECM removal or replacement. The next step should be removal of the instrument panel sub-assembly then extraction of the No. 3 heater to register duct. Disconnect the 4 ECM connectors and the 4 hybrid vehicle control ECU connectors and then remove the 2 nuts and bolt securing the ECM with bracket followed by the 2 nuts and the 3 No.1 and 6 screw ECM brackets before installing the 4 screws and 2 No.2 and 2 No.3 ECM brackets. Begin installation by placing the No. 3 ECM bracket with 2 screws while installing the 2 No. 2 ECM brackets with 4 screws followed by the 3 No. 1 ECM brackets with 6 screws. Use the 2 nuts to install the ECM after setting the torque to 3.0 N.m (31 kgf.cm, 27 in.lbf) and then apply the 2 nuts and bolt to secure the ECM with bracket with the same torque value. Reinstall the No. 3 heater to register duct and the instrument panel sub-assembly after connecting all 4 hybrid vehicle control ECU connectors and 4 ECM connectors. You need to complete initialization by reapplying the cable to the negative battery terminal point because the systems demand this step following battery cable detachment.