A/C - Evaporator Drain Tube Water Leaks to Interior

No: TSB-02-55-006

DATE: August, 2002

MODEL
1999-2002 Galant

SUBJECT:
A/C WATER LEAKAGE AT EVAPORATOR DRAIN TUBE OPENING

PURPOSE

Customers may complain of A/C water leakage onto the driver side floor. The leakage may be more noticeable after the air conditioner or front defogger has been operated.





This condition may be caused by drain tube blockage, or the heater unit not being properly sealed to the bulkhead. The bulkhead silencer pad may be positioned between the evaporator foam pad and the firewall, causing an improper seal. This could cause the evaporator drain tube foam to become deformed and allow water to drain onto the floor.

To eliminate this condition, first check for drain tube blockage. If no blockage is found, install a new evaporator foam pad as described in this bulletin. Also, inspect the heater assembly for cracks or other damage that could cause leakage. If cracks or other damage are observed, replace the heater assembly.

AFFECTED VEHICLES
1999-2002 Galants built before 9/21/01

PROCEDURE

1. Remove the carpet from the driver side floor, to access the drain tube opening.

2. Inspect the drain tube for blockage (clogging). Clear any blockage found. If no blockage is found, go to Step 3.

3. Remove the heater assembly. Refer to Group 55 in the appropriate service manual for removal instructions.





a. Remove the evaporator foam pad. Inspect the drain tube on the heater assembly for cracks or other damage that could create leakage. If cracks or other damage are observed, replace the heater assembly.

b. Replace the evaporator foam pad (listed in the PARTS INFORMATION section of this bulletin).

4. Inspect the evaporator drain opening at the bulkhead to confirm that the silencer pad does not interfere with the drain tube opening.





a. If necessary, trim the silencer pad to eliminate any interference with the drain tube opening. The silencer pad should be fitted as shown.

5. Reinstall the heater assembly.

PARTS INFORMATION





Use the Genuine Mitsubishi Part shown.





WARRANTY INFORMATION

Warranty Coverage: 36 months/36,000 miles.

Special Warranty Information: Normal warranty procedures apply.