Motor Control Module (MCM) Removal/Installation

IMA components are located in this area. The IMA is a high-voltage system. You must be familiar with the IMA system before working on or around it. Make sure you have read the IMA service precautions before doing repairs or service (see SERVICE PRECAUTIONS ).

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

Fig 1: Identifying HDS With Data Link Connector (DLC)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the vehicle and the MCM. If it doesn't, troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
Select the IMA SYSTEM with the HDS.
Select the REPLACEMENT MCM MENU, then select READ DATA, and follow the HDS prompts.
NOTE: If the READ DATA indicates FAILED, continue this procedure.
Make sure the ignition switch to LOCK (0).
Remove the IPU cover (see IPU COVER REMOVAL/INSTALLATION ).
Remove the bolts (A) and the PCU lid (B).

Fig 2: PCU Lid And Bolts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the bolts (A, B) and the PCU busplate (C).

Fig 3: PCU Busplate And Bolts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the bolts (A) and the PCU cover (B).

Fig 4: PCU Cover And Bolts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the MCM connectors (A).

Fig 5: MCM Connectors Replacement Components With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the bolts (B) and the MCM (C).
Install the parts in the reverse order of removal.
Do the IMA motor rotor position calibration procedure (see IMA MOTOR ROTOR POSITION CALIBRATION ).
Turn the ignition switch to ON (II).
Select the IMA SYSTEM with the HDS.
Select the REPLACEMENT MCM MENU, then select WRITE DATA, and follow the HDS prompts.
NOTE: If the WRITE DATA indicates FAILED, continue this procedure.