Data Link Connector
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The Data Link Connector is the connector that you use to read the Diagnostic Trouble Codes (DTCs) from the car, using a tester such as Bosch ESI[tronic], Mercedes Benz StarDiag, or DRB III. Its plug is the same as an OBD2 / J1962 connector.
Pinout
Below is the pinout of the Data Link Connector. The naming is taken from the Service Manual (SRT6).
| OBD2 Pin | OBD2 Name | Circuit | Connector Pin Name | Attached Module |
|---|---|---|---|---|
| 1 | 20BK/WT | "SCI Transmit" | "SCI Transmit" from Body Control Module (BCM)
"SCI Transmit" from Sentry Key Remote Entry Module (SKREEM) | |
| 2 | J1850 Bus + | - | - | - |
| 3 | 20DG/YL | "SCI Receive" | "SCI Receive" from Powertrain Control Module (PCM / ECU / ECM) | |
| 4 | Chassis Ground | 18BR | "Ground" | - |
| 5 | Signal Ground | 20BR/YL | "Sensor Ground" | "Sensor Ground" from Fuel Tank Pressure Sensor
"Sensor Ground" from Powertrain Control Module |
| 6 | CAN (J-2234) High | - | - | - |
| 7 | ISO 9141-2 K-Line | 22BL | "SCI Transmit" | "SCI Transmit" from Powertrain Control Module |
| 8 | 20RD/WT | "Fused Ignition Switch Output" | "Fused Ignition Switch Output" from Relay Control Module | |
| 9 | 22RD/YL | "SCI Transmit" | "SCI Transmit" from Controller Antilock Brake (ESP / BAS)
"SCI Transmit" from Shift Lever Assembly (SLA) | |
| 10 | J1850 Bus - | - | - | - |
| 11 | 22DG | "SCI Transmit" | "SCI Transmit" from Transmission Control Module (TCM / TCU) | |
| 12 | 20BK/YL (ZH27) | "SCI Transmit" | "SCI Transmit" from Power Top Control Module (PTCM) | |
| 13 | 20YL | "SCI Transmit" | "SCI Transmit" from Occupant Restraint Controller (ORC) | |
| 14 | CAN (J-2234) Low | - | - | - |
| 15 | ISO 9141-2 L-Line | 22BK/BL | "SCI Transmit" | "SCI Transmit" from Instrument Cluster (IC)
"SCI Transmit" from Universal Garage Door Opener / Tire Pressure Monitor "SCI Transmit" from A/C Heater Control Module |
| 16 | Battery Power | 18RD/DG | Fused B(+) |