Detection Condition
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
PCM monitors changes in input voltage from brake switch No. 1. If PCM does not detect voltage changes at PCM 104-pin harness connector terminal No. 32 while alternately accelerating and decelerating 8 times, PCM determines that brake switch No. 1 circuit has a malfunction. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for same malfunction has been stored in PCM. PENDING CODE is available if PCM detects malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.