SXTune Documentation
Last updated: 7 October 2026
Documentation / ECU technical reference

ECU Technical Reference

Delta 700 ECU technical reference

Hardware identification and connector pin-out.

ECU

Delta 700 ECU
Delta 700 ECU.

Pin-out

Connector pin assignments and electrical descriptions.

Connector A — AMPSeal 776163-1

PinNameDescriptionNotes
A1BatteryPower Supply input 6-18V12V Permanent Battery Supply (Fuse 15A)
A2IgnitionIgnition Switch inputIgnition Switch Input (Fuse 5A)
A3Power Ground 1Power GroundPower Ground (to Battery negative)
A4Low Side Output 11.5A Open CollectorInjector Output 1
A5Low Side Output 21.5A Open CollectorInjector Output 2
A6Low Side Output 31.5A Open CollectorInjector Output 3
A7Low Side Output 41.5A Open CollectorInjector Output 4
A8Crank/Cam GroundDigital GroundDigital Sensor Ground
A9Crank InputVR/Hall - Software SelectableCrankshaft sensor input
A10Cam Input 1VR/Hall - Software SelectableCamshaft sensor input 1
A11NTC Input 13.16K pull-up to VREFInlet Air Temperature Sensor Input
A12NTC Input 23.16K pull-up to VREFCoolant Temperature Sensor Input
A13Ignition 1TTL/Power Ignition OutputIgnition Coil Output 1
A14Ignition 2TTL/Power Ignition OutputIgnition Coil Output 2
A15Ignition 3TTL/Power Ignition OutputIgnition Coil Output 3
A16Ignition 4TTL/Power Ignition OutputIgnition Coil Output 4
A17Analog Input 147k pull-up to VREFUser Defined Analogue Input 1
A18Cam Input 2VR/Hall - Software SelectableCamshaft sensor input 2
A19Analog Ground 1Analog GroundAnalogue Sensor Ground
A20Narrowband Lambda InputWeak bias to 450mVNarrowband Lambda Sensor Input
A21CAN 1HCAN bus 1 High
A22CAN 1LCAN bus 1 Low
A23Low Side Output 51.5A Open CollectorUser Defined / Injector Output 5
A24Low Side Output 70.75A Open Collector with recirc diode to VbattMain Relay/PWM3 Output
A25Low Side Output 81.7A Open Collector with recirc diode to VbattFuel Pump Relay/PWM4 Output
A26Low Side Output 91.7A Open Collector with recirc diode to VbattUser Defined PWM1 Output
A27Low Side Output 101.7A Open Collector with recirc diode to VbattUser Defined PWM2 Output
A28Low Side Output 110.75A Open Collector with pull up and diode to VKeyTacho Output
A29Low Side Output 61.5A Open CollectorUser Defined / Injector Output 6
A30Analog Ground 2Analog GroundAnalogue Sensor Ground
A31NTC Input 33.16K pull-up to VREFUser Defined Temperature Sensor Input 1
A32Analog Input 247k pull-up to VREFThrottle Position Sensor 1 Input
A33Analog Input 347k pull-up to VREFManifold Pressure Sensor Input
A34VREF1200mA 5V supply to sensors5V Sensor Supply output
A35Power Ground 2Power GroundPower Ground (to Battery negative)

Connector B — AMPSeal 776163-4

PinNameDescriptionNotes
B1H Bridge M+8.6A H-Bridge +Throttle Motor +
B2H Bridge M-8.6A H-Bridge -Throttle Motor -
B3Wideband Lambda IpLSU Pin 1Wideband Lambda Sensor Ip
B4Wideband Lambda IaLSU Pin 5Wideband Lambda Sensor Ia
B5Bipolar Output 12.5A Hi Side/Lo Side DriveUser Defined PWM5 Output
B6Bipolar Output 22.5A Hi Side/Lo Side DriveUser Defined PWM6 Output
B7Bipolar Output 32.5A Hi Side/Lo Side DriveUser Defined PWM7 Output
B8Bipolar Output 42.5A Hi Side/Lo Side DriveUser Defined PWM8 Output
B9Low Side Output 121.5A Open CollectorUser Defined / Injector Output 7
B10Low Side Output 131.5A Open CollectorUser Defined / Injector Output 8
B11Cam Input 3Hall Effect Input (2k7 Pull-up to 5V)Camshaft sensor input 3
B12Cam Input 4Hall Effect Input (2k7 Pull-up to 5V)Camshaft sensor input 4
B13Ignition 5TTL/Power Ignition OutputIgnition Coil Output 5
B14Ignition 6TTL/Power Ignition OutputIgnition Coil Output 6
B15Wideband Lambda Heater1.7A Open collector with recirc diode (LSU Pin 3)Wideband Lambda Sensor Heater Output
B16WB Lambda Virtual Ground (Vm)LSU Pin 2Wideband Lambda Sensor Vm
B17Hall Input 1Hall Effect Input (2k7 Pull-up to 5V)Digital Input 1 / Wheel Speed LR
B18Hall Input 2Hall Effect Input (2k7 Pull-up to 5V)Digital Input 2 / Wheel Speed RR
B19Hall Input 3Hall Effect Input (2k7 Pull-up to 5V)Digital Input 3 / Wheel Speed LF
B20Hall Input 4Hall Effect Input (2k7 Pull-up to 5V)Digital Input 4 / Wheel Speed RF
B21Knock 1 +Knock InputDedicated DSP Knock Input 1
B22Knock 2 +Knock InputDedicated DSP Knock Input 2
B23Knock GroundDigital GroundAnalogue Sensor Ground
B24Wideband Lambda Nernst (Un)LSU Pin 6Wideband Lambda Sensor Un
B25Analog Input 447k pull-up to VREFThrottle Position Sensor 2 Input
B26Analog Input 547k pull-up to VREFPedal Position Sensor 1 Input
B27Analog Input 647k pull-up to VREFPedal Position Sensor 2 Input
B28NTC Input 43.16k pull-up to VREFUser Defined Temperature Sensor Input 2
B29NTC Input 53.16k pull-up to VREFUser Defined Temperature Sensor Input 3
B30Analog Input 747k pull-up to VREF (optional pull-down to ground)User Defined Analogue Input 5
B31Analog Input 847k pull-up to VREF (optional pull-down to ground)User Defined Analogue Input 6
B32Analog Input 947k pull-up to VREF (optional pull-down to ground)User Defined Analogue Input 7
B33Analog Input 1047k pull-up to VREF (optional pull-down to ground)User Defined Analogue Input 8
B34CAN 2LCAN bus 2 Low
B35CAN 2HCAN bus 2 High

PC communications connectors

PinNameDescriptionNotes
DB9-1Ground
DB9-6CAN High
DB9-7CAN Low
DB9-8Battery Voltage
DTM-1Battery Voltage
DTM-2Ground
DTM-3CAN High
DTM-4CAN Low