Service Hints
B9 (A), B10 (B), B12 (D) BODY ECU(D) 9 - GROUND : Always approx. 12 volts
(A) 5 - GROUND : Approx. 12 volts with the ignition SW at ON position
(B) 17 - GROUND : Continuity with the light control SW at HEAD position
K4 UNLOCK WARNING SW
2 - 1 : Closed with the ignition key in the cylinder