1999 Honda Passport battery drains completely, have turned off all electrical, any ideas what to check?


Asked by Feb 02, 2014 at 03:41 PM about the 1999 Honda Passport 4 Dr EX 4WD SUV

Question type: Maintenance & Repair

Brand new battery charged and installed.  Car starts, alt is providing full charge, all lights, radio, etc. off.  Does have the fuel gauge problem that has gone on for years.  also A/C heater fan does not work.  However, the car always ran and did not have this battery drain problem.  This problem just started and wondering if anyone may have some thoughts or ideas on what to check?  Thank you!

3 Answers


Disconnect the positive (+) battery cable and get a 12 volt dc test light. Connect one side of the test light directly to the positive battery terminal and the other side of the test light to the disconnected positive battery cable. You can expect it to glow dimly because of the computer and radio pulling a small amount of power. If it glows brightly, with the ignition off, you've got a short. Now, one by one, start removing and reinstalling the fuses. When the test light goes dim or goes out that's the problem circuit. When doing this test pull the fuse for the interior courtesy lights and leave it out. With the door open and the courtesy lights on you'll get a false reading from the test light. Any draw will light the test light. The more the draw the brighter the test light will glow. HTH. -Jim

2 of 2 people found this helpful.
Best Answer Mark helpful

Hi Jim, thank you for your answer! I went through the testing of each fuse. Finally got to the two fuses that are screwed down in the fuse block under the hood. There is a 60A and 100A fuse that is for the ignition. Pulling the 100A fuse caused the test light to go out. Appears there is a short in the ignition system. I will need to start following the wires to see if I can find a short. Unless you have some quick tips for me? Nonetheless thank you for the answer it helped narrow down the problem. -Gary

1 of 1 people found this helpful.

You're welcome Gary, glad to help. Now that you've narrowed it down to the problem circuit you'll have to check the wiring and components on that circuit. It's a tedious process. HTH. -Jim

Your Answer


Looking for a Used Passport in your area?

CarGurus has 46 nationwide Passport listings starting at $3,995.


Honda Passport Experts

  • #1
    Tom Demyan
  • #2
  • #3
    Barry Johns
View All

Related Models For Sale

Used Honda CR-V
541 Great Deals out of 67,089 listings starting at $1,800
Used Honda Accord
529 Great Deals out of 93,656 listings starting at $1,495
Used Ford F-150
2,525 Great Deals out of 219,810 listings starting at $1,222
Used Toyota Tacoma
431 Great Deals out of 40,775 listings starting at $2,600
Used Chevrolet Silverado 1500
2,183 Great Deals out of 150,273 listings starting at $1,499
Used Toyota 4Runner
299 Great Deals out of 30,520 listings starting at $2,995
Used Jeep Grand Cherokee
803 Great Deals out of 73,495 listings starting at $500
Used Nissan Pathfinder
305 Great Deals out of 22,132 listings starting at $1,495
Used Chevrolet Corvette
87 Great Deals out of 15,661 listings starting at $4,500
Used Ford Explorer
832 Great Deals out of 64,080 listings starting at $2,000
Used Lexus ES 300
7 Great Deals out of 656 listings starting at $2,000
Used Toyota Camry
787 Great Deals out of 71,592 listings starting at $175

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.