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Home >> Audi >> 1998 >> A8 Quattro >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (On Board Diagnostic (OBD) - 5 SPD. Automatic Transmission (01V, Fwd)) >> On Board Diagnostic (OBD II), function >> Transmission controls

Transmission controls

WARNING: This page is about a different variant/trim than selected.

The automatic transmission is controlled electronically and hydraulically.

The Transmission Control Module (TCM) -J217- for the automatic transmission obtains information from components that have an effect on the shifting. Based on this information the TCM controls the respective solenoid valves in the valve body. The solenoid valves direct the oil pressure created by the ATF oil pump to the respective clutches or brakes.

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