Diagnostic Aids
NOTE:
Leak Detection Pump module is also referred to as the Diagnostic Module Tank Leakage (DMTL). It incorporates a heater to dissipate condensation in the EVAP system.
Check for following possible problems:
- Fuel filler cap loose or missing
- Fuel filler cap seal missing or damaged
- Faulty or damaged fuel filler pipe
- Leaking, disconnected or plugged fuel vapor lines
- Fuel getting into lines, due to faulty Rollover valve (RV) or On-board Refueling Vapor Recovery Valve (ORVR)
- Improperly installed Purge Solenoid Valve (PSV)
- PSV stuck open or closed
- Leaking canister or catch tank
- Faulty leak detection module solenoid valve
- Faulty leak detection module