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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Engine Controls [Self-Diagnostics 3.0L]) >> Diagnostic Tests >> DTC P2404: EVAP System Leak Detection Pump Sense Circuit - Malfunction >> Detection Procedure

Detection Procedure

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 pump load current (EVAP line pressure) while evaporative leak monitor is operating. After obtaining reference current value, if the time in which pump load current reaches reference current value is less than specification, PCM determines air filter is clogged. This is an intermittent monitor (other). 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.

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