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Home >> Honda >> 2012 >> Civic Hybrid L4-1.5L Hybrid >> Repair and Diagnosis >> Hybrid Drive Systems >> Relays and Modules - Hybrid Drive >> Drive Motor Control Module >> Service and Repair >> Removal and Replacement >> Motor Control Module (MCM) Removal And Installation

Motor Control Module (MCM) Removal And Installation




Service Information

Motor Control Module (MCM) Removal and Installation

Removal

WARNING:
The IMA motor power cables carry high voltage when the engine is running or the IMA system is energized. To avoid serious injury from electrical shock, do not start the engine with the IMA motor power cables disconnected.

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 High Voltage Safety before doing repairs or service.

1. HDS DLC - Connection





NOTE: For specific operations, refer to the user's manual that came with the Honda Diagnostic System (HDS). Make sure the HDS is loaded with the latest software.

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

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

2. MCM Data - Read

1. Select the IMA SYSTEM with the HDS.

2. Select the REPLACEMENT MCM MENU, then select READ DATA, and follow the HDS prompts.

NOTE: If the READ DATA indicates FAILED, continue this procedure.

3. Rear Seat Cushion





1. Remove the bolt (A) securing the rear seat cushion (B).





2. While pushing down the rear seat cushion (A), pull out on the seat hook handles (B) to release the hooks (C).

3. Remove the rear seat cushion.

4. Both Rear Seat Side Bolsters





1. Remove the bolt (A) securing the rear seat side bolster (B).

2. The left side is shown; repeat on the right side.





3. Remove the rear seat side bolster (A).

4. The left side is shown; repeat on the right side.

5. Rear Seat-Back





1. Remove all of the rear head restraints.

2. Release the rear center seat belt (A) from the rear center seat belt guide (B).





3. Remove the bolts (A) securing the rear seat-back (B).





4. Lift up the rear seat-back (A) to release the seat legator hooks (B) from the brackets (C) on the body, then remove the seat-back.

6. IMA Battery Main Switch - OFF









1. Turn the ignition switch to LOCK (0).

2. Remove the battery module switch lid (A) from the IPU cover.

3. Turn the battery module switch (B) OFF, then check that the bolt (C) is showing.

4. Wait at least 5 minutes to allow the PDU capacitors to discharge.

7. IPU Cover





1. Remove the IPU cover.

8. MCM





1. Disconnect the MCM connectors A, B, and C.

2. Remove the MCM (D).

Installation

WARNING:
The IMA motor power cables carry high voltage when the engine is running or the IMA system is energized. To avoid serious injury from electrical shock, do not start the engine with the IMA motor power cables disconnected.

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 High Voltage Safety before doing repairs or service.

1. MCM





1. Install the MCM (D).

2. Connect the MCM connectors A, B, and C.

2. IPU Cover





1. Install the IPU cover.

3. IMA Battery Main Switch - ON









1. Make sure the ignition switch is turned to LOCK (0).

2. Turn the battery module switch (A) ON.

3. Install the battery module switch lid (C) to the IPU cover.

4. Rear Seat-Back





1. Install the seat legator hooks (A) in the brackets (B) on the body.





2. Install the bolts (A) securing the rear seat-back (B).





3. Install the rear center seat belt (A) to the rear center seat belt guide (B).

4. Install all of the head restraints.

5. Both Rear Seat Side Bolsters





1. Install the rear seat side bolster (A).

2. The left side is shown; repeat on the right side.





3. Install the bolt (A) securing the rear seat side bolster (B).

4. The left side is shown; repeat on the right side.

6. Rear Seat Cushion





1. Install the hooks (A) in the rear seat cushion clips (B).





2. Install the bolt (A) securing the rear seat cushion (B).

7. HDS DLC - Connection





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

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

8. IMA Motor Rotor Position - Calibration

Do the IMA motor rotor position calibration whenever any of these actions are done:
* The MCM is replaced.
* The IMA motor rotor position sensor is replaced or removed during service.
* The IMA motor is replaced or removed during service.
* The engine assembly is replaced or removed during service.
* The transmission is replaced or removed during service.

1. Select IMA SYSTEM on the HDS.

2. Select the MOTOR ROTOR POSITION CALIBRATION in the ADJUSTMENT MENU of the HDS.

3. Turn the ignition switch to LOCK (0), and disconnect the HDS from the DLC.

9. MCM Data - Write

1. Select the REPLACEMENT MCM MENU, then select WRITE DATA, and follow the HDS prompts.

NOTE: If the WRITE DATA indicates FAILED, continue this procedure.
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