The engine and drive train control computer are mounted on the right rear of the instrument panel (I/P), near the cover plate, close to the outer casing. There are six connectors A, B, C, D, C, and D: A connector 12-terminal practical 7-terminal, mainly connected to ignition switch, standard voltage 5V, battery pack, camshaft position sensor, etc.; B connector is also 12-terminal, practical 9-terminal, mainly connected with throttle opening, air conditioning pressure, and Gas temperature, coolant temperature, knock, sensor, etc.
Buick-Century Car Engine (3.1v) Control System PCM (b) circuit diagram connector terminal number, wire color labeling is very clear, the wire is also numbered, easy to find. For example, the wire from the fault indicator is No. 419, brown/white stripe (BRN/WHT), which is connected to the No. 1 terminal of the C connector. Other wire colors are as follows:
BLK a black LTGRN a light green DKGRN a dark green TAN a yellow brown
BLU One Blue ORG One Orange GRN One Green VlO One Purple
BRN one brown PNK one pink GRY one gray WHT one white
CLR a colorless PPL a purple LTBLU a light blue YEL a yellow
DKBLU a dark blue RED one red
Buick-Century Car Engine (3.1v) Control System PCM (b) circuit diagram connector terminal number, wire color labeling is very clear, the wire is also numbered, easy to find. For example, the wire from the fault indicator is No. 419, brown/white stripe (BRN/WHT), which is connected to the No. 1 terminal of the C connector. Other wire colors are as follows:
BLK a black LTGRN a light green DKGRN a dark green TAN a yellow brown
BLU One Blue ORG One Orange GRN One Green VlO One Purple
BRN one brown PNK one pink GRY one gray WHT one white
CLR a colorless PPL a purple LTBLU a light blue YEL a yellow
DKBLU a dark blue RED one red
Fiber Optic Rotary Joint, also known as optical fiber slip ring, optical fiber rotary joint, optical hinge, etc., is used to solve the problem of optical signal transmission between opposite rotating components, that is, to ensure that the transmission of optical signals is not interrupted due to rotation.
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