Alternator Fr Signal

WARNING: This page is about a different car, the 2005 Acura NSX, 2004 Acura NSX, 2003 Acura NSX, and 2002 Acura NSX. However, it is still accessible from the selected car via links, so may be relevant.

This signals the ECM when the alternator (ALT) is charging. For troubleshooting of the ALT FR signal circuit, see Fig 1 and Fig 2 . ECM is located behind passenger seat. See Figure .

Fig 1: Alternator (ALT) FR Signal Diagnostic Flow Chart (1 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Alternator (ALT) FR Signal Diagnostic Flow Chart (2 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.