RM3660EC _51 Engine / Hybrid System _080773 HYBRID / BATTERY CONTROL _0599558 BATTERY ECU(for LITHIUM-ION BATTERY) A

HYBRID / BATTERY CONTROL BATTERY ECU(for LITHIUM-ION BATTERY) REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during battery ECU assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Replacement of battery ECU assembly	Current sensor offset learning	DTCs are stored	(202304,999999,_51,_080773,_0599560,RM100000002B8MP_01_0296,)

CAUTION:: ·

Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair manual.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION201906,999999,_V1,_080724,_0393249,RM100000001HWSK,

·

To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.

NOTICE:: ·

The type of battery ECU assembly to be used varies depending on the vehicle model.

·

If the wrong type of battery ECU assembly is installed, the power switch cannot be turned on (READY).

·

After installing the battery ECU assembly, perform the following to check that the power switch can be turned on (READY).

-

Turn the power switch on (READY).

-

Turn the power switch off and wait for 30 seconds or more.

-

Turn the power switch on (READY) again.

·

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION201906,999999,_V1,_080724,_0393249,RM100000001HWSK,

·

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.

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven
Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 seconds or more.	(202304,999999,_95,_139716,_0584193,RM1000000029F4C,)

PROCEDURE

Hide Display 1. PRECAUTION

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION201906,999999,_V1,_080724,_0393249,RM100000001HWSK,

Hide Display 2. WHEN REPLACING BATTERY ECU ASSEMBLY

HV battery learning values are stored in the battery ECU assembly and ECM and are used to detect malfunctions and illuminate the hybrid battery indicator light in the combination meter assembly. When either of these ECUs is replaced, the new ECU receives the HV battery learning values from the other ECU and stores them.

NOTICE:: ·

Do not replace the battery ECU assembly and ECM at the same time as the HV battery learning values will be lost. However, if it is necessary to replace both ECUs at the same time, replace them by following the procedure below.

·

Do not replace the battery ECU assembly or ECM with a used one from another vehicle.

Procedure when replacing both battery ECU assembly and ECM:

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

ii.

Replace either ECU.

iii.

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

iv.

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

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

vi.

Replace the other ECU.

vii.

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

viii.

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

HINT:: If the battery ECU assembly 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.

Hide Display G3834 3.REMOVE SERVICE PLUG GRIP

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>SERVICE PLUG GRIP>REMOVAL202307,999999,_51,_080773,_0392185,RM100000002CWG6,

Hide Display 4.REMOVE CONNECTOR COVER ASSEMBLY

for 8ZR-FXE:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>8ZR-FXE INVERTER WITH CONVERTER>REMOVAL202304,999999,_51,_080773,_0392172,RM100000002B8GJ_01_0251,

for M20F-FXS, M20G-FXS:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>M20F-FXS, M20G-FXS INVERTER WITH CONVERTER>REMOVAL202307,999999,_51,_080773,_0616271,RM100000002CWFK_01_0023,

Hide Display 5.CHECK TERMINAL VOLTAGE

for 8ZR-FXE:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>8ZR-FXE INVERTER WITH CONVERTER>REMOVAL202304,999999,_51,_080773,_0392172,RM100000002B8GJ_01_0252,

for M20F-FXS, M20G-FXS:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>M20F-FXS, M20G-FXS INVERTER WITH CONVERTER>REMOVAL202307,999999,_51,_080773,_0616271,RM100000002CWFK_01_0025,

Hide Display 6.INSTALL CONNECTOR COVER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV BATTERY (for LITHIUM-ION BATTERY)>REMOVAL202307,999999,_51,_080773,_0599559,RM100000002CWHW_01_0386,

Hide Display 73350C 7.DISCONNECT REAR CENTER SEAT OUTER BELT ASSEMBLY

for Fixed Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fixed Seat Type)>REMOVAL201906,999999,_58,_080732,_0394195,RM100000001I3KD_01_0021,

for Fold Down Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fold Down Seat Type)>REMOVAL201906,999999,_58,_080732,_0394196,RM100000001I3KH_01_0024,

Hide Display 8.REMOVE REAR SEAT CUSHION ASSEMBLY

for Fixed Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fixed Seat Type)>REMOVAL201906,999999,_58,_080732,_0394195,RM100000001I3KD_01_0023,

for Fold Down Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fold Down Seat Type)>REMOVAL201906,999999,_58,_080732,_0394196,RM100000001I3KH_01_0042,

Hide Display 72693 9.REMOVE REAR SEAT CUSHION LOCK HOOK

for Fixed Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fixed Seat Type)>REMOVAL201906,999999,_58,_080732,_0394195,RM100000001I3KD_01_0024,

for Fold Down Seat Type:

Click hereVehicle Interior>SEAT>REAR SEAT ASSEMBLY (for Fold Down Seat Type)>REMOVAL201906,999999,_58,_080732,_0394196,RM100000001I3KH_01_0001,

Hide Display 67918A 10.REMOVE REAR DOOR SCUFF PLATE LH

Click hereVehicle Interior>INTERIOR PANELS / TRIM>ROOF HEADLINING>REMOVAL202307,999999,_58,_080744,_0394267,RM100000002D1GZ_02_0308,

Hide Display 76974F 11.REMOVE REAR UNDER SIDE COVER LH

Click hereVehicle Interior>INTERIOR PANELS / TRIM>ROOF HEADLINING>REMOVAL202307,999999,_58,_080744,_0394267,RM100000002D1GZ_02_0311,

Hide Display 67917A 12.REMOVE REAR DOOR SCUFF PLATE RH

HINT:: Use the same procedure as for the LH side.

Hide Display 76973F 13.REMOVE REAR UNDER SIDE COVER RH

HINT:: Use the same procedure as for the LH side.

Hide Display 76971G 14.REMOVE REAR UNDER COVER

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>BATTERY BLOWER>REMOVAL202304,999999,_51,_080773,_0392187,RM100000002B8KZ_02_0144,

Hide Display 71033 15.REMOVE REAR SEAT CUSHION LEG SUB-ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>BATTERY BLOWER>REMOVAL202304,999999,_51,_080773,_0392187,RM100000002B8KZ_02_0145,

Hide Display G92N4A 16.REMOVE NO. 1 HV BATTERY COVER PANEL RH

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV BATTERY (for LITHIUM-ION BATTERY)>REMOVAL202307,999999,_51,_080773,_0599559,RM100000002CWHW_01_0401,

Hide Display 17.REMOVE UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY

CAUTION:: Be sure to wear insulated gloves and protective goggles.

Remove the 8 bolts and upper No. 1 hybrid battery cover sub-assembly from the HV battery.

Hide Display 89890A 18.REMOVE BATTERY ECU ASSEMBLY

CAUTION:: Be sure to wear insulated gloves and protective goggles.

Disconnect the 3 battery ECU assembly connectors.

NOTICE:: Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

Using an 8 mm socket wrench, remove the 2 bolts and battery ECU assembly from the HV battery.

NOTICE:: If the battery ECU assembly has been struck or dropped, replace it.