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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Automatic Transaxle - 4T80-E - DTC P0218 To DTC P0977) >> DTC P0723 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle speed sensor (VSS) is a permanent magnet generator attached to the transmission case. The final drive assembly has a toothed wheel, VSS rotor. As the final drive assembly rotates, an AC voltage is induced and transmitted to the transmission control module (TCM). The TCM converts the AC voltage into a digital signal. The TCM uses vehicle speed to determine shift timing, torque converter clutch apply and release and gear ratio.

If the TCM detects a loss of vehicle speed while the vehicle is in motion, then DTC P0723 sets. DTC P0723 is a type B DTC.

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