Initial Inspection and Diagnostic Overview

Battery Blanket Heater Inspection

1. Remove battery. Refer to battery removal.

Battery Blanket Heater:

2. Remove blanket heater from battery.

WARNING: SERIOUS PERSONAL INJURY AND/OR ELECTRICAL BURNS COULD RESULT IF THESE PROCEDURES ARE NOT FOLLOWED.

3. Clean battery blanket heater vinyl cover with a baking soda solution and wipe dry.
4. Inspect blanket heater for cuts, abrasion or other damage. If heater is damaged replace. If OK, go to Step 5.
5. Lay heater flat and connect heater to vehicle's connector.
6. Connect the power cord to a 110 volt AC source for 3 minutes MAXIMUM.
7. Disconnect voltage source from the power cord.
8. Immediately feel the heater cover on the inside it should be warm to the touch. If warm, heater is OK. If not OK, go to Step 9.
9. Using an Ohmmeter, connect a lead across the two terminals.
10. Check for a resistance value of 220 to 280 Ohms. If within the resistance value range the blanket is OK. If not OK, replace blanket.
11. Check extension cord to vehicle for voltage. If extension cord is OK, go to Step 12. If not OK, repair as necessary.
12. Ensure heater receives voltage from extension cord and power cord. If OK, replace heater. If not OK, repair as necessary.