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Home >> GMC >> 2013 >> Sierra 1500 XFE >> Repair and Diagnosis >> External Pages >> Different car >> Section 2721 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> DTC P15F7: Rear Object Detection Control Module Torque Request Signal Message Counter >> Circuit/System Description

Circuit/System Description

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The rear parking assist control module is constantly sending a serial data message to the engine control module requesting engine speed or torque reduction. The engine control module sets DTC P15F7 when it detects a discrepancy in the structure of the message causing the integrity of the message to be questioned. An intermittent fault in the serial data circuits will cause the engine control module to set DTC P15F7.

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