Fuel pump ECU (2012 and later Camry, 2013 and later Avalon and ES350) — removal and installation
Caution: Do not reuse the fuel pump control ECU if it has been dropped or the rear of the vehicle has been severely impacted.
Note: If a problem such as seized pump or otherwise damaged fuel pump occurred, excessive power may be continuously supplied to the fuel pump ECU, damaging its internal parts. If the pump was damaged or seized, replace the fuel pump ECU at the same time as replacing the fuel pump.
1. Disconnect the cable from the negative terminal of the battery (see Engine electrical systems).
2. Open the trunk and use a trim tool to disengage the plastic threshold fasteners, then remove the threshold.
3. Lift the spare tire cover and floor carpet out.
4. Remove the trim hook from the left side of the trunk.
5. Remove the carpet liner/panel fasteners and remove the panel from the left side of the trunk.
6. Remove the fuel pump ECU mounting nuts and pull the ECU out until the electrical connector on the bottom of the ECU is easily accessed,
7. Disconnect the electrical connector from the ECU and remove the ECU from the vehicle.
8. Installation is the reverse of removal.