Data Bus On Board Diagnostic Interface, Internet Access Control Module, Information Electronics Control Module 1, Control Module For Emergency Call Module And Communication Unit, Microphone Unit In Front Roof Module

J533  Data bus on board diagnostic interface

J666  Internet access control module

J794  Information electronics control module 1

J949  Control module for emergency call module and communication unit

R38  Telephone microphone

R74  Interior microphone

R164  Microphone unit in front roof module

T4bg  4-pin connector, black

T8ah  8-pin connector, brown

T12x  12-pin connector, blue

T20  20-pin connector, red

T20g  20-pin connector, black

T26d  26-pin connector, black

(370) Ground connection 5 (in main wiring harness)

(371) Ground connection 6 (in main wiring harness)

(638) Ground connection on right A-pillar

(B708) Instrument cluster CAN bus high connection 1 (in main wiring harness)

(B709) Instrument cluster CAN bus low connection 1 (in main wiring harness)

(H20) Connection 1 (in OBD wiring harness)

*  Refer to applicable wiring diagram for ring break diagnosis

*2  Refer to applicable wiring diagram for data bus networking

*3  Only for vehicles with emergency call module

*4  Only for vehicles with BOSE sound system