Results 1 to 10 of 10

Thread: 94 Camry, battery drain- what is normal background current?

  1. #1
    Join Date
    Jun 2008
    Location
    Drouin East, Vic
    Posts
    2,396
    Total Downloaded
    0

    94 Camry, battery drain- what is normal background current?

    My daughter has a 1994 Camry that will probably go to the scrap metal man when she graduates from uni and gets a job next year, but we are trying to keep it going for her til then. We have just got back from a 2 week holiday to find the battery in the Camry completely dead, to the extent that my smart charger would not recognise it, tried charging with my old 4amp charger and it did not accept a charge. Have replaced the battery but want to make sure there is not something draining it, I have just checked the current draw from the battery with everything switched off and my multimeter shows 240 milliamps going somewhere, i.e. with the positive cable connected to the battery and the multimeter between the battery negative post and cable, I get a reading of 240milliamps. When she gets home tonight we will pull fuses and try to identify where this 240ma is going, but I am unsure what the baseline reading should be. What reading should I expect if all is well? i.e. how much current should things like the clock, radio memory etc be drawing?

  2. #2
    Join Date
    Sep 2012
    Location
    Adelaide Hills
    Posts
    13,307
    Total Downloaded
    0
    under 50mA

    an aftermarket alarm will add another 50mA if installed.

  3. #3
    Join Date
    Jun 2008
    Location
    Drouin East, Vic
    Posts
    2,396
    Total Downloaded
    0
    No alarm system fitted, we did fit a new stereo a couple of months ago (Christmas present) so that will be the first thing looked at, although just station memory and clock should surely draw very little.

  4. #4
    Join Date
    Sep 2012
    Location
    Adelaide Hills
    Posts
    13,307
    Total Downloaded
    0
    amp installed?

  5. #5
    Join Date
    Nov 2014
    Location
    Sydney
    Posts
    195
    Total Downloaded
    0
    G'day,
    Check the Glovebox light and boot light or interior light is going out if you have them. Power draw is 2.88 watts which is a small globe wattage. Maybe also a GPS charging?.
    Good Luck. Chris

  6. #6
    Join Date
    Jun 2008
    Location
    Drouin East, Vic
    Posts
    2,396
    Total Downloaded
    0
    No power amp, I checked the glovebox and boot lamps, neither are on. I started pulling fuses, the power draw is on the ignition circuit, which surprised me a bit. Went to zero when I pulled the ignition fuse. Had to abandon it due to mosquitos where it's parked, will look further in daylight tomorrow. Thinking perhaps a faulty ignition switch? Would appreciate any further suggestions.

  7. #7
    Join Date
    Apr 2009
    Location
    Crafers West South Australia
    Posts
    11,731
    Total Downloaded
    0
    Quote Originally Posted by POD View Post
    No power amp, I checked the glovebox and boot lamps, neither are on. I started pulling fuses, the power draw is on the ignition circuit, which surprised me a bit. Went to zero when I pulled the ignition fuse. Had to abandon it due to mosquitos where it's parked, will look further in daylight tomorrow. Thinking perhaps a faulty ignition switch? Would appreciate any further suggestions.
    Could be the alternator, try unplugging the regulator plug on it.

  8. #8
    Join Date
    Jun 2008
    Location
    Drouin East, Vic
    Posts
    2,396
    Total Downloaded
    0
    Okay, problem solved. The ignition circuit was a wild goose chase, wife must have been not holding the multimeter probes properly when I pulled that fuse, checked again today and pulling the same fuse made no difference. Moved on to the under-bonnet fuse box, problem on the dome-light circuit, turned out to be a broken r/h/r door switch, even though the dome light was switched off, must have been still operating a relay or something I suppose. Cut the wire, wrapped the end- the car is not worth a new door switch- and now background current of 1 milliamp.
    Thanks to those who offered assistance.

  9. #9
    Join Date
    Sep 2012
    Location
    Adelaide Hills
    Posts
    13,307
    Total Downloaded
    0
    well done

  10. #10
    Join Date
    Nov 2014
    Location
    Sydney
    Posts
    195
    Total Downloaded
    0
    Well Done. Thanks for the feedback.

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!