Operation CHARM: Car repair manuals for everyone.

Service Hints

Multiplex Communication System (communication Bus)

B6 (B), B7 (C) BODY ECU
(B) 1 - GROUND : Approx. 12 volts with the ignition SW at ON position
(B) 3 - GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
(B) 9 - GROUND : Always approx. 12 volts
(C) 25 - GROUND : Always approx. 12 volts
(C) 15 - GROUND : Always continuity

D22 DRIVER DOOR ECU
21 - GROUND : Approx. 12 volts with the ignition SW at ON position
23 - GROUND : Always approx. 12 volts
25 - GROUND : Always approx. 12 volts
13 - GROUND : Always continuity

F18 FRONT PASSENGER DOOR ECU
19 - GROUND : Approx. 12 volts with the ignition SW at ON position
12 - GROUND : Always approx. 12 volts
20 - GROUND : Always approx. 12 volts
8 - GROUND : Always continuity

B11 (B) BACK DOOR ECU
(B) 4 - GROUND : Approx. 12 volts with the ignition SW at ON position
(B) 2 - GROUND : Always approx. 12 volts
(B) 1 - GROUND : Always approx. 12 volts
(B) 3 - GROUND : Always continuity