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ECUType / EMERALDK3-K6-M3D

EMERALD K3, K6, and M3D ECUs

The Emerald K3, K6, and M3D ECUs output data at 19200bps. When connected to the Race Technology ECU decoder the following channels are decoded:

Byte ECU Name Race Technology message Race Technology Default name Race Technology VAR number Resolution
1 Engine Speed Engine RPM RPM VAR_0010 25 RPM
2 Throttle position aux 1 Throttle position VAR_2000 0.1%
3 Manifold pressure pressure 5 Boost pressure VAR_3504 0.1 kPa
4 Ambient Air Pressure pressure 1 Ambient air pressure VAR_3500 0.1 kPa
5 Ignition advance angle 2 Ignition angle VAR_3001 0.1o BTDC
6 Air Fuel Ratio misc 1 Lambda 1 VAR_4000 0.01 lambda
7 Air Fuel Ratio target misc 2 Lambda 2 VAR_4001 0.01 lambda
8 Battery voltage misc 3 Battery voltage VAR_4002 0.01 V
9 Primary Ing Time measured time 1 Fuel inj 1 PW on VAR_2500 µs
10 Secondary Inj Time measured time 2 Fuel inj 2 PW on VAR_2501 µs
11 Coil on Time measured time 9 Coil 1 PW VAR_2508 µs
12 Air Temperature temperature 1 temperature 1 VAR_1000 0.1 oC
13 Coolant Temperature temperature 8 Water temp VAR_1007 0.1 oC
14 Aux Temperature temperature 25 Aux 1 VAR_1024 0.1 oC
15 Exhaust Gas Temp temperature 17 Exhaust 1 temp VAR_1016 0.1 oC


Please note that on the Emerald the serial data is NOT ON STANDARD PINS, the Emerald ECU uses serial data pins 8 and 9. Race Technology understand that EMERALD supply a cable that switch over these pins with the ECU, if you are unable to locate this lead then please contact Emerald for a replacement.

Pin Number Connection Comments
1 CAN_H CAN bus interface
2 CAN_L CAN bus interface
3 - Not used
4 - Not used
5 earth Signal earth
6 - Not Used
7 Rx RS232 serial interface, data receive
8 Tx RS232 serial interface, data transmit
9 CTS RS232 serial interface, clear to send
Page last modified on June 03, 2015, at 06:29 AM