Code No.B16A1 Tail Lamp(LH) Circuit Open Code No.B16A8 Tail Lamp(LH) Circuit Short
DIAGNOSTIC FUNCTION
When the open circuit is detected in the taillamp circuit, the ETACS-ECU sets the diagnosis code No. B16A1. If the short circuit is detected, the diagnosis code No. B16A8 is set.
JUDGMENT CRITERIA
The problem detection of taillamp is made based on the digital feed back signal (input signal to ETACS-ECU) which operates the taillamp. When the ignition switch is ON, the ETACS-ECU determines the taillamp 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 diagnosis code No. B16A1 if the load is detected on the line, and sets the code B16A8 if no load is detected.