REMOVAL AND INSTALLATION


caution
  • When the engine-ECU is replaced, another ECU related to KOS system should not replaced together. Always replace the ECU by ones when the multiple ECU is replaced, and then replace the next ECU after registering the necessary IDs by using M.U.T.-III.
  • When the engine-ECU is replaced, coding must be performed.
  • When the engine-ECU is replaced, using M.U.T.-III to write the chassis number. (Refer to GROUP 00, Precautions before Service - How to Perform Chassis Number Writing.)
  • When the engine-ECU is replaced, register the injector identification code and perform the small injection quantity learning (Refer to GROUP 00 - Precautions Before Service, What The Common Rail Engine Learns ).
Pre-removal Operation
  • Cowl Side Trim Removal (Refer to GROUP 52A - Trim).

 Post-installation Operation
  • Cowl Side Trim Installation (Refer to GROUP 52A - Trim).




Removal steps

>>B<<
 ·
 Initialisation operation <only at installation>


·
 Clearance warning control unit and bracket (Refer to GROUP 54A - Ultrasonic Misacceleration Mitigation System/Blind Spot Warning/Corner Sensor System, Clearance Warning Control Unit) <Vehicles with ultrasonic misacceleration mitigation, blind spot warning or corner sensor system>
<<A>>
 >>A<<
 1.
 Engine-ECU connectors


2.
 ECU lower bracket


3.
 Engine-ECU


4.
 ECU upper bracket

REMOVAL SERVICE POINT

<<A>> ENGINE-ECU CONNECTOR DISCONNECTION
caution Be sure to press the connector cover when turning the lock lever, or the connector may be damaged.
note If the connector cover should come off, engage the lock lever gear with the connector gear. Then, install the connector cover to the connector. Press the lock button to unlock the lock lever. While pressing the connector cover against the connector, turn the lock lever to the vertical position. Then, disconnect the connector from the engine-ECU.

Press the lock button to unlock the lock lever. While pressing the connector cover against the engine-ECU, turn the lock lever to the vertical position. Then, disconnect the connector from the engine-ECU.

INSTALLATION SERVICE POINTS

>>A<< ENGINE-ECU CONNECTOR CONNECTION

1.
caution When inserting the connector to the engine-ECU, be careful not to apply force in the directions other than the inserting direction.
Move the lock lever of the connector to the unlock status, and then install the connector to the engine-ECU. Insert the connector as far as it goes.
2.
caution Make sure that the connector is inserted sufficiently before locking it, or the lock lever may be damaged.
While pressing the connector toward the engine-ECU side, turn the lock lever to lock the connector.

>>B<< INITIALISATION OPERATION
Turn the ignition switch to the "ON" position and then to "LOCK" (OFF) position and hold it for at least 10 seconds.