SXTune Documentation
Last updated: 7 October 2026
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ECU Technical Reference

Delta GDI6 ECU technical reference

Hardware identification and connector pin-out.

ECU

Delta GDI6 ECU
Delta GDI6 ECU.

Pin-out

Connector pin assignments and electrical descriptions.

Connector A — AMPSeal 776231-1 (black)

PinNameDescriptionNotes
1Battery DirectBattery Supply (15A fuse)Direct Battery Power 6-15V
2IgnitionIgnition Switched Supply (10A fuse)Ignition Key Input
3Power Ground 1Power GroundPower Ground 1
4Low Side Output 11.5A Open CollectorPort Injector 1 Output
5Low Side Output 21.5A Open CollectorPort Injector 2 Output
6Low Side Output 31.5A Open CollectorPort Injector 3 Output
7Low Side Output 41.5A Open CollectorPort Injector 4 Output
8Crank/Cam GroundDigital GroundCrank/Cam Sensor Ground
9Crank InputVR/Hall - Software SelectableCrank Sensor Input
10Cam Input 1VR/Hall - Software SelectableCam Sensor 1 Input
11Coolant Temp Input3.16K pull-up to VREFCoolant Temperature Input
12Air Temp Input3.16K pull-up to VREFAir Temperature Input
13Ignition 1TTL/Power Ignition OutputSoftware Configurable Ignition Output
14Ignition 2TTL/Power Ignition OutputSoftware Configurable Ignition Output
15Ignition 3TTL/Power Ignition OutputSoftware Configurable Ignition Output
16Ignition 4TTL/Power Ignition OutputSoftware Configurable Ignition Output
17Analog Input 147k pull-up to VREFLinear 1 Input
18Cam Input 2VR/Hall - Software SelectableCam Sensor 2 Input
19Analog Ground 1Analog GroundAnalog Ground
20Lambda 1 InputWeak bias to 450mVNarrowband Lambda Sensor 1 Input
21CAN 1HTo PC comms DTMCAN High
22CAN 1LTo PC comms DTMCAN Low
23Low Side Output 51.5A Open CollectorAuxiliary 1 / Port Injector 5 Output
24Low Side Output 71.5A Open Collector w/ recirc diodeRelay 1 / Main Relay Output
25Low Side Output 81.5A Open Collector w/ recirc diodeRelay 2 / Fuel Pump Relay Output
26Low Side Output 91.7A Open Collector w/ recirc diodePWM 1 Output
27Low Side Output 101.7A Open Collector w/ recirc diodePWM 2 Output
28Low Side Output 110.75A Open Collector w/ recirc diodeRelay 3 Output
29Low Side Output 61.5A Open CollectorAuxiliary 2 / Port Injector 6 Output
30Analog Ground 2Analog GroundAnalog Sensors Ground
31NTC Input 13.16K pull-up to VREFNTC1 Input
32Analog Input 247k pull-up to VREFThrottle Position Sensor Input
33Analog Input 347k pull-up to VREFManifold Pressure Sensor Input
34VREF200mA 5V supply to sensors5V Reference Sensor Supply
35Power Ground 2Power GroundPower Ground 2

Connector B — AMPSeal 776231-5 (blue)

PinNameDescriptionNotes
B1INJ1+Injector 1 High SideGDI Injector High-Side Bank 1
B2INJ2+Injector 2 High SideGDI Injector High-Side Bank 1
B3INJ3+Injector 3 High SideGDI Injector High-Side Bank 1
B4INJ4+Injector 4 High SideGDI Injector High-Side Bank 2
B5INJ5+Injector 5 High SideGDI Injector High-Side Bank 2
B6INJ6+Injector 6 High SideGDI Injector High-Side Bank 2
B7H Bridge 1 M+8.6A H-Bridge OutputThrottle Motor Control +
B8H Bridge 1 M-8.6A H-Bridge OutputThrottle Motor Control -
B9H Bridge 2 M+8.6A H-Bridge OutputHigh Pressure Pump 1 +
B10H Bridge 2 M-8.6A H-Bridge OutputHigh Pressure Pump 1 -
B11H Bridge 3 M-8.6A H-Bridge OutputHigh Pressure Pump 2 +
B12H Bridge 3 M-8.6A H-Bridge OutputHigh Pressure Pump 2 -
B13INJ1-Injector 1 Low SideGDI Injector #1 Low-Side
B14INJ2-Injector 2 Low SideGDI Injector #2 Low-Side
B15INJ3-Injector 3 Low SideGDI Injector #3 Low-Side
B16INJ4-Injector 4 Low SideGDI Injector #4 Low-Side
B17INJ5-Injector 5 Low SideGDI Injector #5 Low-Side
B18INJ6-Injector 6 Low SideGDI Injector #6 Low-Side
B19Ignition 5TTL/Power Ignition OutputSoftware Configurable Ignition Output
B20Ignition 6TTL/Power Ignition OutputSoftware Configurable Ignition Output
B21Knock 1 +Knock 1 Signal InputKnock Sensor Input
B22Knock 2 +Knock 2 Signal InputKnock Sensor Input
B23Knock GroundDigital GroundKnock Sensors Ground
B24Lambda 2 InputWeak bias to 450mVNarrowband Lambda 2 Input
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 23.16k pull-up to VREFNTC 2 Input
B29NTC Input 33.16k pull-up to VREFNTC 3 Input
B30Analog Input 747k pull-up to VREFLinear 5 Input
B31Analog Input 847k pull-up to VREFLinear 6 Input
B32Analog Input 947k pull-up to VREFLinear 7 Input
B33Analog Input 1047k pull-up to VREFLinear 8 Input
B34CAN 2LCAN bus 2 Low
B35CAN 2HCAN bus 2 High

Connector C — AMPSeal 776231-2 (white)

PinNameDescriptionNotes
C1Wideband Lambda 1 Heater1.7A Open collector with recirc diodeWideband Lambda Sensor 1 Heater
C2Wideband Lambda 1 IpWideband Lambda Sensor 1 Ip
C3Wideband Lambda 1 IaWideband Lambda Sensor 1 Ia
C4Wideband Lambda 1 VmWideband Lambda Sensor 1 Vm
C5Wideband Lambda 1 NernstWideband Lambda Sensor 1 Un
C6Cam Input 3VR/Hall - Software SelectableCam Sensor 3 Input
C7Cam Input 4VR/Hall - Software SelectableCam Sensor 4 Input
C8LINLIN communications
C9Hall Input1Hall Effect Input (2k7 Pull-up to 5V)Left Rear Wheel Speed Input
C10Hall Input2Hall Effect Input (2k7 Pull-up to 5V)Right Rear Wheel Speed Input
C11Hall Input3Hall Effect Input (2k7 Pull-up to 5V)Left Front Wheel Speed Input
C12Hall Input4Hall Effect Input (2k7 Pull-up to 5V)Right Front Wheel Speed Input
C13Wideband Lambda 2 Heater1.7A Open collector with recirc diodeWideband Lambda Sensor 2 Heater
C14Wideband Lambda 2 IpWideband Lambda Sensor 2 Ip
C15Wideband Lambda 2 IaWideband Lambda Sensor 2 Ia
C16Wideband Lambda 2 VmWideband Lambda Sensor 2 Vm
C17Wideband Lambda 2 NernstWideband Lambda Sensor 2 Un
C18Low Side Output 121.7A Open collector with recirc diodeAuxiliary 3 Output
C19Low Side Output 131.7A Open collector with recirc diodeAuxiliary 4 Output
C20Bipolar Output 12.5A Hi Side/Lo Side DrivePWM 5 Bipolar output
C21Bipolar Output 22.5A Hi Side/Lo Side DrivePWM 6 Bipolar output
C22Bipolar Output 32.5A Hi Side/Lo Side DrivePWM 7 Bipolar output
C23Bipolar Output 42.5A Hi Side/Lo Side DrivePWM 8 Bipolar output
C24Low Side Output 141.5A Open collector with recirc diodeHEGO Heater 1
C25Low Side Output 151.5A Open collector with recirc diodeHEGO Heater 2
C26Low Side Output 161.5A Open collector with recirc diodeRelay 4 Output
C27Low Side Output 171.5A Open collector with recirc diodeRelay 5 Output
C28Low Side Output 180.75A Open collector with recirc diodeRelay 6 Output
C29Low Side Output 190.75A Open collector with recirc diodeRelay 7 Output
C30Hall Input 5Hall Effect Input (2k7 Pull-up to 5V)SENT Position Sensor Input
C31Analog Input 1147k pull-up to VREFLinear 9 Input
C32Analog Input 1247k pull-up to VREFLinear 10 Input
C33NTC Input 43.16k pull-up to VREFNTC 4 Input
C34VREF2200mA 5V supply to sensors5V Reference Sensor Supply
C35Analog Ground 2Analog GroundAnalog Sensors Ground

DTM PC communications connector

PinNameDescriptionNotes
1Battery Voltage
2Ground
3CAN High
4CAN Low