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Home >> Subaru >> 2003 >> Impreza RS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Mechanism & Function >> Transmission Control Module (TCM) >> Shift Pattern Selection Control
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Shift Pattern Selection Control

The TCM changes its gear shift control pattern automatically between the Base pattern suitable for ordinary economy driving and the Power pattern suitable for climbing uphill or rapid acceleration.

In the Power pattern, the downshift point and upshift point are set higher than those of the Base pattern.

Fig 1: Shift Pattern Selection Control Chart
G01993077Courtesy of SUBARU OF AMERICA, INC.