Data Link Connector

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	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	-	-	-
3	20DG/YL	"SCI Receive"	"SCI Receive" from Powertrain Control Module (PCM / ECU / ECM)
4	18BR	"Ground"	-
5	20BR/YL	"Sensor Ground"	"Sensor Ground" from Fuel Tank Pressure Sensor "Sensor Ground" from Powertrain Control Module
6	-	-	-
7	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	-	-	-
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	-	-	-
15	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	18RD/DG	Fused B(+)