Removal

2ZR-FXE ENGINE CONTROL: ECM: REMOVAL

1. PRECAUTION

NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Service Precautions.

HV battery learning values are stored in the power management control ECU and ECM to display "HAVE TRACTION BATTERY INSPECTED" on the multi-information display. When either of these ECUs is replaced, the new ECU receives the HV battery learning value data from the other ECU and updates the information.

NOTICE:
* Do not replace the power management control ECU and ECM at the same time as it clears the HV battery learning values. However, if it is necessary to replace both ECUs at the same time, replace them by following the procedure below.
* Do not replace the power management control ECU or ECM with used ones from other vehicles.

(a) Procedure when replacing both power management control ECU and ECM:

(1) Disconnect the cable from the negative (-) auxiliary battery terminal.

(2) Replace either of the ECUs.

(3) Connect the cable to the negative (-) auxiliary battery terminal.

(4) Turn the power switch on (READY) and wait for 5 minutes or more.

(5) Turn the power switch off and disconnect the cable from the negative (-) auxiliary battery terminal.

(6) Replace the other ECU.

(7) Connect the cable to the negative (-) auxiliary battery terminal.

(8) Check that the power switch can be turned on (READY).

HINT
If the power management control ECU and ECM are replaced at the same time without following the above procedure, replace either of the ECUs with its original one and then replace it again by following the above procedure. If the correct procedure is not followed, perform the procedure again from the beginning.

2. REMOVE REAR NO. 3 FLOOR BOARD Removal

3. REMOVE DECK FLOOR BOX RH Removal

4. DISCONNECT CABLE FROM AUXILIARY BATTERY NEGATIVE TERMINAL

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

5. SEPARATE INVERTER RESERVE TANK ASSEMBLY

(a) Remove the 2 bolts and separate the inverter reserve tank assembly.





6. REMOVE ECM

(a) Remove the No. 1 relay block cover.

(b) Disconnect the 3 wire harness connectors.





(c) Disengage the 2 claws, push up the engine room wire harness and separate it from the engine room relay block.





(d) Disengage the 2 claws and push up the side cover to remove it.





(e) Loosen the bolt and separate the No. 2 engine room wire.





(f) Disconnect the 2 ECM connectors.

(1) Disconnect the 2 wire harness clamps.





(2) Push the locks on the 2 levers, then raise the levers, and disconnect the 2 ECM connectors.

NOTICE:
After disconnecting the connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the connectors.

(g) Separate the 3 wire harness clamps.





(h) Remove the 2 bolts and ECM with 2 ECM brackets.