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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 61 (Automatic Transmission -- G37 Coupe) >> DTC/Circuit Diagnosis >> DTC P1721: Vehicle Speed Signal >> Description

DTC P1721: Vehicle Speed Signal: Description

WARNING: This page is about a different variant/trim than selected.

The vehicle speed signal is transmitted from unified meter and A/C amp. to TCM via CAN communication line. The signal functions as an auxiliary device to the output speed sensor when it is malfunctioning. The TCM will then use the vehicle speed signal.

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