GEMS EM40
Compatibility
Configuration
Connect to ECU mapping software and go to: Telemetry > CAN Telemetry Setup...:
Using the image below select the channels in the correct order then click Show info and confirm it matches the table in the image.
Connection
This ECU should be connected via CAN connections:
Race Technology supply a cable that directly connects Race Technology equipment to the Gems E36 communications port. In case the cable cannot be supplied, pinout information for the communications port below:
| 9 Way D-type socket for communication with PC:
|
| PIN NO
|
|
|
| 1
| CANL
| Option
|
| 2
| TX
| Standard for PC serial RS-232C
|
| 3
| RX
| Standard for PC serial RS-232C
|
| 4
| BUSB
| Option RS-422
|
| 5
| GND
|
|
| 6
| CANH
| Option
|
| 7
| BUSZ
| Option RS-422
|
| 8
| BUSY
| Option RS-422
|
| 9
| BUSA
| Option RS-422
|
Data Channel listing
| ECU Message Name
| Race Technology Data Channel
| Resolution of Data
|
| RPM50
| RPM (Engine RPM)
| 50 RPM
|
| Air temp
| Ambient air temp (temperature 1)
| 1c
|
| Coolant
| Coolant temp (temperature 8)
| 1c
|
| Lambda 1
| Lambda 1 (misc 1)
| 0.008 Lambda
|
| Gear
| Auxiliary 1 (aux 26)
| 1
|
| Fuel 1 PW
| Fuel inj 1 PW (aux 6)
| 1us
|
| Fuel 6 PW
| Fuel inj 6 PW (aux 11)
| 1us
|
| Road speed
| Auxiliary 2 (aux 27)
| 1 MPH
|
| Throttle
| Throttle position (aux 1)
| 0.40%
|
| Lambda 2
| Lambda 2 (misc 2)
| 0.008 Lambda
|
Not all channels listed in the table above may be available from your ECU. The available data channels vary with the vehicle model, year of manufacture & connected sensors.
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