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Home >> Suzuki >> 2007 >> XL7 Base, AWD >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> Diagnostic Information and Procedure >> DTC P0731 >> Circuit/System Description
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Circuit/System Description

The transmission control module (TCM) calculates the actual gear ratio based on input speed sensor (ISS) and output speed sensor (OSS) data. The actual gear ratio is compared to the expected gear ratio for each commanded gear. If the TCM detects an incorrect 1st gear ratio while in 1st gear, DTC P0731 sets.

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