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Home >> Audi >> 2012 >> S4 Automatic DCT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1159 (EPAS Guided Routine Testing) >> Pinpoint Tests >> Pinpoint Test M: PSCM DTC U3004 Accessory Power Relay >> Pinpoint Test Purpose
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Pinpoint Test Purpose

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To determine the root cause of the voltage fluctuations. This test verifies the PSCM fuses, PSCM wiring harness power and ground connections are working correctly. It also verifies if the PSCM is receiving the proper voltage from the battery and charging system.

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