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Sedans Toyota Camry 2007 Toyota Camry Problems and Repairs
4932 messages, Last post on Nov 17, 2009 at 3:53 PM
You are in the Toyota Camry Forum. Your Hosts are pat & karens
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Replying to: paulwhite (Sep 07, 2008 8:00 pm) The backup light power circuit is as follows....power comes from the battery, thru the 100A Alt fusible link, thru the 40A AM1 fuse, thru an ignition switch contact point, thru the 10A Gauge switch, thru the transmission switch, then back to the 2 rear bulbs. If you have a digital volt/ohmmeter great use it, if not go buy a cheap analog volt/ohmmeter, you can pick one up for maybe 10 bucks at a radioshack or autoparts chains. Assuming you have verified that the 10A gauge fuse is good, then go pull the connector on the transmission switch. With the VOLT meter setting, verify that the connector wire has 13volts on one wire (coming from the fuse), and 0 volts on the other wire (going to the rear bulbs). You'll need the ignition switch in the powered ON position. You'll need the plus Voltmeter lead on the wire, and minus Voltmeter lead on frame ground. Next check the switch itself, with the wire disconnected, and ignition power off. With the OHM meter setting, measure the resistance of the switch. Have someone shift the vehicle in and out of reverse. You should see the switch go from open (infinity resistance), to short (zero resistance). If you have power as you are supposed to, and the switch works as supposed to, then head back to the trunk and crawl in (hope you are on good terms with spouse or significant other, or can avoid locking yourself in the trunk). First inspect the wiring at the trunk hinge, sometimes on older vehicles the wire wears or frays as it is opened or closed, or as things are stuffed into the trunk. If the wiring looks good, then put your VOLTmeter on the wires to the reverse bulbs. With the ignition power on, and the transmission in Reverse, you should have 13volts on one of the wires with your plus Voltmeter lead, your minus Voltmeter lead should be on frame ground. Let me know what you find. By the way, that 10A Gauge fuse also supplies power to the gear selector indicator lights. On the surface, since those lights appear to be working (but not correctly), one might think that the 10A Gauge fuse is okay (and it may be). However, the ECM Computer is also connected to the 10A Gauge fuse (as well as other fuses). It may be that the 10A Gauge fuse is out, and the ECM is somehow incorrectly back feeding voltage on to that line. Let's hope your problem is the 10A fuse, the transmission switch, or wiring harness in the trunk. |
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It sounds like your on the right track with indicator malfunction and no back-up lights Im suspect of the switch not working right and voltage going to both circuits of the dash indicator light and shorting out the reverse circuit lights. But where is the short? How do you get to the shifter switch? Is it on the tranny or under the console, connected to the shifter?
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Replying to: rearwheeldrive (Sep 08, 2008 11:03 am) If by some chance it is a wiring harness problem in the trunk, it might be an 'open' (internal wire broken), as opposed to a 'short' (wire insulation chaffed and internal wire rubbing across trunk metal shorting it out and blowing a fuse). |
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Replying to: jetjockg (Sep 06, 2008 2:31 am) I've always liked Toyota--I've got a '97 Avalon that's a dream car. I'm almost sorry I got this Camry. Feel free to reply with any suggestions.
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Replying to: sewcoolsue (Sep 11, 2008 6:01 am) Is this a 6 cylinder, 6 speed auto transmission you are having problems with? or the 4 cylinder, 5 speed auto transmission?
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From last July (2007) when I purchased this car, I've had nothing but problems with the transmission. So far it's been in for service 6 times, and they've replaced my transmission twice (so this is my third transmission) and this last time (four days ago) they also replaced the computer. The problem has been rough shifting between gears, and jolting. When I first drove the car home 4 days ago, it felt OK. But now I think the shifting is becoming rough again. Maybe I'm just paranoid, but I'm giving my daughter a chance to drive it, and then next week I'm calling service again. That or possibly contacting the dealership's owner and telling him this car's a lemon. I don't want this problem continuing, and I need a car!!
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Replying to: kiawah (Sep 11, 2008 6:18 am)
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Replying to: rearwheeldrive (Sep 08, 2008 11:03 am) Sorry about the delay. Airline guy called out for 4 day trip. Got the ohm meter out and ready and will check out the car as soon as I get home. Thanks again. |
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Replying to: sewcoolsue (Sep 11, 2008 9:20 am)
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Replying to: dwb2 (Sep 11, 2008 2:16 pm) |
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