A/C - Evaporator Leak Checking Procedure

Classification: HA11-003A

Reference: NTB11-046A

Date: March 26, 2012

JUKE AND VERSA;
CHECKING FOR A/C EVAPORATOR LEAK

This bulletin has been amended. The Applied Vehicles section has been revised. Please discard all previous versions.





APPLIED VEHICLES





APPLIED VINS & DATES

SERVICE INFORMATION

When servicing the A/C system on an Applied Vehicle for poor cooling due to low refrigerant, the entire system should be thoroughly checked for leaks.

The diagnostic tips in this bulletin are provided as a help to check for leaks at the A/C evaporator.

Diagnostic Tip # 1

Check for refrigerant oil on the In-Cabin Microfilter.





a. Remove the In-Cabin Microfilter.

^ Refer to the Service Manual as needed for filter removal information.

b. Refrigerant oil on the filter indicates the evaporator is leaking.

Diagnostic Tip # 2

Check for oil/dye on evaporator tubes or surface.

a. Remove the glove box.

^ Refer to the Service Manual as needed for glove box removal information.





b. Use a mirror, ultraviolet light and yellow glasses to check for oil/dye on the evaporator surface/tubes.

NOTE:
Essential tool J-43926 (A/C Dye Leak Detection Kit) contains an ultraviolet light and yellow glasses. Equivalent light and glass can also be used.





^ If oil is on the evaporator, it is usually on the lower tank.

^ Refrigerant oil/dye visible on the evaporator indicates the evaporator is leaking.

Example of evaporator leak:





^ Oil/dye is present where tubes attach to the lower tank.