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Home >> Chevrolet >> 2006 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System - 3.9L - DTC P0442 To DTC P2A01) >> DTC P0660 >> Circuit/System Verification

Circuit/System Verification

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Command the IMT valve ON. The IMT Valve Command parameter should transition from open to closed and the IMT Valve Feedback parameter should transition from 15-30 percent to 70-90 percent.