Engine Control Module: Service and Repair

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. REMOVE COOL AIR INTAKE DUCT SEAL.
3. REMOVE ENGINE ROOM SIDE COVER LH
4. REMOVE ECM BOX COVER




a. Remove the 3 bolts and cover.

NOTE:
- Remove all water on and around the cover.
- Perform the inspection indoors to avoid rain.
- Be sure to prevent water intrusion to the ECM (connectors and screw parts).


5. DISCONNECT WIRE HARNESS




a. Using a screw driver, detach the 2 claws.

HINT: Tape the screwdriver tip before use.

b. Disconnect the 2 connector holders.
c. Disconnect the 6 connectors.

6. REMOVE ECM




a. Remove the 2 nuts and ECM.

INSTALLATION

1. INSTALL ECM




a. Install the ECM to the ECM box.

NOTE:
- Install the ECM in the ECM box with the name plate facing the inside of the vehicle.
- Make sure that there is no foreign matter on the gasket surface of the ECM box.
- Insert the stud bolt in the vehicle rear side to the ECM first.
- Make sure that the stud bolts are securely installed into the front and rear bolt holes.




b. Install the 2 nuts in the order shown in the illustration.

Torque: 5.5 N.m (56 kgf.cm, 49 in.lbf)

NOTE: Be sure to first tighten the nut on the vehicle rear.

2. CONNECT WIRE HARNESS
a. Attach the 2 claws.
b. Connect the 2 connector holders.




c. Connect the 6 connectors.

3. INSTALL ECM BOX COVER




a. Install the cover with the 3 bolts.

Torque: 5.5 N.m (56 kgf.cm, 49 in.lbf)

NOTE: Make sure that the wire harness does not get caught between the parts.

4. INSTALL ENGINE ROOM SIDE COVER LH
5. INSTALL COOL AIR INTAKE DUCT SEAL
6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
7. PERFORM REGISTRATION
a. Perform registration

8. RESET MEMORY
a. Reset memory for 2WD
b. Reset memory for 4WD

9. PERFORM INITIALIZATION
a. Perform initialization.

NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.