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.
Diagnostic Aids
Check for following possible problems
- Open or short to battery between leak detection pump heater and ECM (terminal No. 9).
- Short to ground between leak detection pump heater and ECM (terminal No. 9).
- Faulty leak detection pump heater in leak detection pump module.