Mitsubishi Outlander Rear Inverter

Forum board: https://openinverter.org/forum/viewforum.php?f=19

Property	Value
Device	Inverter
OEM	Mitsubishi
Type	3 phase Motor inverter/controller & HV DC Junction Box
Part Number(s)	9410A067, 9410A081, 9499D140, 9410A163
Mitsubishi Module Name	REMCU
Manufacturer	Meidensha
Suppliers	Ebay
Voltage	300V DC Nominal supply voltage (336V Max according to max battery voltage)
Interfaces	1x Resolver/Motor Temperature sensor interface Hirose GT18WB-14DP-HU - 14 way proprietary connector Black 1x 12V Power/CAN Bus Interface Hirose GT18WB-14P-HU - 14 way proprietary connector Grey 1x DC Bus Input - M10 Bolts with gland plate 1x 30A Fused DC Bus Junction Output - M10 Bolts with gland plate 1x 3 Phase motor output - M10 Bolts with gland plate
Mechanical Mounting	3x Lugs around lower face, M10 bolts multiple locations
Resolver	Presumably matched to resolver on Outlander Rear Motor SIN COS - P/N C69600/TS2239N484E102 Believed to be similar to Nissan Leaf resolver
Cooling	Water/glycol cooling (Blue on Outlander)
Power	Unknown if continuous duty is based on inverter or motor thermal capability 70kW Peak 25kW Continuous
Weight	9kg
Features	Integral 3-way DC fused Junction box (1 input, 2 fused outputs) Water cooled 2x Coil temperature sensors
Wiring Diagram
3D Printable Parts	https://www.printables.com/@crasbe_360778/collections/563327

Vehicle Topology

Rear Motor Inverter (REMCU) is on EV-CAN with the following modules:

• PHEV-ECU (Also on CAN-C, gatewayed through ETACS-ECU to CAN-C-Mid)
• Front Power Drive Unit
• Onboard charger/DC-DC Converter
• A/C Compressor
• Electrical Parking Driver Unit
• Battery Management Unit

Can Bus Topology

PHEV-ECU Handles the whole hybrid system management including drive mode, system torque distribution and battery management

Wiring Diagram

Troubleshooting information from the Outlander manual

Outlander REMCU Pinout/Interface Connections. Also downloadable as .XLSX and .ODS format for your own use. Please update here if you find any errata!

Wiring diagram to the right.

It would appear that there are 4 unused pins on the Vehicle Connector (D-211).

IGCT - ECU control power supply voltage

IGCT appears to be main ignition control relay - 12V

This is the supply voltage for the REMCU and should be supplied with battery voltage when turned on.

RSDN - REMCU shut-down signal

RSDN is a signal from the PHEV-ECU and is referred to as "REMCU shut-down signal" as part of the "Rear Motor Shutdown Circuit". It seems to be the equivalent of the MSDN signal from the PHEV-ECU to the Front Motor Controller. The RSDN signal could be used as a safety circuit. In normal operation, it should be pulled to low (1V or less).

CAEH & CAEL - CAN Communication

Standard CAN bus, Baudrate 500KBaud??

[Note: The CAN is NOT terminated]

Diagnostic Codes

P1048 - Rear motor shutdown circuit

The PHEV-ECU stores diagnosis code No. P1048 when the rear motor shut down circuit fails.

Check the wiring harness between PHEV-ECU (RSDN terminal) connector and the rear EMCU (RSDN terminal) connector.

Communication Protocol

CAN Bus with fallback to LIN and K-Line according to service manual

CAN reporting from inverter;

0x289 8bytes at 100ms

B0+B1 = torque report = ((H*256+L)-10000)/10

B2+B3 = RPM report = ((H*256+L)-20000)

B4+B5 = HV report = ((H*256+L))

0x299 8bytes at 100ms

B0 = Peak motor temp B-40 [°C]

B1 = motor temp B-40 [°C]

B4 = motor temp B-40 [°C]

0x732 8bytes at 100ms

B0+B1 = motor current 1 report Ia= ((H*256+L)-1000)

B2+B3 = motor current 2 report Ib= ((H*256+L)-1000)

B4 = rotor angle report

Calculate motor current 3 report Ic

Ic = -Ia - Ib

In this equation, Ic is the current in the third phase, and Ia and Ib are the current values in the first and second phases, respectively. Assuming that the system is balanced.

Calculate the DC current

DC Current (Idc) = |Ia| + |Ib| + |Ic|

CAN commands required to run rear motor ;

Heartbeat

0x285 00,00,14,39,91,FE,0C,10 at 10ms for driving

0x285 00,00,B6,39,91,FE,0C,10 at 10ms for charging

Commands

0x371 30, 00, 00, 00, 00, 00, 00, 00

0x286 00, 00, 00, 3D, 00, 00, 21, 00

0x287 Torque Command 0x2710=0Nm=10000 decimal, torque band = +/- 200nm 200/10000=0.02nm/bit

Byte[0]=TorqueHi; //front motor torque part 1

Byte[1]=TorqueLo; //front motor torque part 2

Byte[2]=TorqueHi; //rear motor torque part 1 0x2710=10000=0NM

Byte[3]=TorqueLo; //rear motor torque part 2

Byte[4]=TorqueHi; //generator torque part 1

Byte[5]=TorqueLo; //generator torque part 2

Byte[6]=function; //0x00,0x02=no inverter response to torque

//0x03=front motor responds (possibly rear also)

//0x04=generator only responds to torque

//0x05=generator and front motor respond to torque.

Byte[7]=0x00;

Authentication

The REMCU does not appear to require authentication with other modules, meaning it is a good candidate for stand-alone use from this point of view.

However, If one wished to take the whole Hybrid system including the PHEV-ECU for an EV conversion, this would be more challenging as the PHEV-ECU appears to require authentication with the OSS-ECU (One Touch Start ECU) and the KOS-ECU (Keyless entry)

Inverter Resolver & Can Connector

The original Connectors:

1x Resolver/Motor Temperature sensor interface [Hirose GT18WB-14DP-HU - 14 way proprietary connector] - Black

1x 12V Power/CAN Bus Interface [Hirose GT18WB-14P-HU - 14 way proprietary connector] - Grey

These connectors are unobtainable however Tom DeBree has created a 3d printable connector that utilises TE Pins and Dupont style connector:

https://openinverter.org/forum/viewtopic.php?t=682&start=75

It must be noted Chinese Dupont connectors are not good for much more than testing as they are not a good Fit.

OEM Inverter OI modification

• OEM Inverter OI modification

Inverter Phase Connections

Based on information within the Service diagrams the following HV phase connections have been identified on the inverter.

Inverter Phase Connections