DTC Advanced Diagnostics: P1A61: General Description

Courtesy of HONDA, U.S.A., INC.

The transmission control module (TCM) internal malfunction that leads to infringement of the vehicle safety defined by ISO26262, is detected by the self-diagnosis of the main CPU and the diagnosis by the sub CPU to secure safety before the vehicle reaches to a hazardous event. The monitoring of the arithmetic function is made by the self-diagnosis of the main CPU and the diagnosis of the sub CPU. If the arithmetic function is in abnormal condition for a specified time, the TCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type