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| ST185 headlight problem :( http://www.gt4dc.co.uk/forum/viewtopic.php?f=2&t=7298 |
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| Author: | supersan23 [ Sun Feb 08, 2015 12:20 am ] |
| Post subject: | ST185 headlight problem :( |
Hi all My celica headlights won't turn on they will pop up and down and the sidelights work, it's just the dip and high beam I've checked the fuse's and they are fine has anyone got any ideas as I'm abit stumped, I don't have acces to a multimeter either  Thanks in advance Si |
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| Author: | TrackToyFour [ Sun Feb 08, 2015 3:52 pm ] |
| Post subject: | Re: ST185 headlight problem :( |
Is this affecting both dip and main beam? If the fuses are OK perhaps a relay's gone? I'm not a wiring guru but if you can get hold of a multimeter at least you'd be able to see if there's power getting to the headlights and if not then track it back through the loom. |
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| Author: | supersan23 [ Sun Feb 08, 2015 6:27 pm ] |
| Post subject: | Re: ST185 headlight problem :( |
Hi Yes this is affecting dip and main beam I will see if I can get hold of a multimeter on Monday. |
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| Author: | Nibbles [ Tue Feb 10, 2015 10:00 pm ] |
| Post subject: | Re: ST185 headlight problem :( |
You need to refer to p626 of the following: https://dl.dropboxusercontent.com/u/831 ... 0ST185.pdf If the lights go up & down as they should, then the headlight switch should be ok as the signal feeding the 'headlight relay' is the same as feeding the motor control unit. (note, the switch pulls to ground to switch on). Interestingly, the 'headlight relay' switches live, via fuses, to the 'common' connection on the headlight bulbs. The individual dip & beam connections are then switched to ground via the high / low / flash switch. It looks like both the switches are on the same ground, so that is probably ok as the on/off switch seems to be working. Things common to all headlights (I assume sidelights & tail lights are working ?) are the headlight relay, and the ground for the switches. What happened on the car between them working and them not working ? Was it a case of being stood for a long time and not working after, or was work done on the car in the meantime ? If so, what ? |
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