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Home >> Ford >> 2022 >> Explorer ST-Line, 4WD >> Repair and Diagnosis >> Steering >> Manual Steering >> Electronic Power Assist Steering Guided Routine Testing >> Pinpoint Tests >> Pinpoint Tests BT: PSCM DTC U0253 Lost Communication With Accessory Protocol Interface Module >> Pinpoint Test Purpose
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Pinpoint Test Purpose

To verify the PSCM wiring harness and connectors are OK. This test checks the connectors and wiring from the PSCM 3-pin connector at the steering gear to the in-line connector in the engine compartment. If these circuits are working correctly, the test then directs to check the APIM and wiring harness.

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