Technical Description (Comment)

The problem detection of taillight or position light is made based on the digital feed back signal (input signal to ETACS-ECU) which operates the taillight or position light. When the ignition switch is "ON", the ETACS-ECU determines the taillight or position light circuit state from the load placed on the line. After 100 ms has elapsed since the start of the check, the ETACS-ECU performs a sampling with each 10 ms. If an abnormality is detected, it increases the counter by 2, and when no abnormality is detected, it decreases the counter by 1. Once the counter reaches "10", the ETACS-ECU sets the DTC B16A0 if the load is detected on the line, and sets the DTC B16A7 if no load is detected.