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Car Forum / Peugeot Cars / January 2006406 indocators and alarm problem
Had this very intermittent problem for a while (over 6 months since last time). When it happens the indicators flash when you press the lock button, but not when you press the deadlock button, but you can hear the locks working. Then when you unlock, you can hear the relays operate, but the indiactors don't flash. Also, when you operate the turn signals, all indicators flash regardless of which way you indicate. Often normal service can be resumed by disconnecting and reconnecting the battery a few times. Has anyone come across this? TIA > Had this very intermittent problem for a while (over 6 months since last > time). When it happens the indicators flash when you press the lock [quoted text clipped - 4 lines] > service can be resumed by disconnecting and reconnecting the battery a few > times. Has anyone come across this? I don't know if this information will help. My 406 does not have an alarm fitted and the locking has always worked exactly as you describe. The only time the indicators flash is when you press to lock. They never flash on deadlock or unlock. Probably no help but it may give you a clue.  SignatureKeith Willcocks (If you can't laugh at life, it ain't worth living!) > I don't know if this information will help. My 406 does not have an > alarm fitted and the locking has always worked exactly as you describe. > The only time the indicators flash is when you press to lock. They never > flash on deadlock or unlock. Probably no help but it may give you a > clue. Thanks Keith, but I don't think so. I'm looking for some pointer as to where the alarm circuit, indicators and possible hazard warning lights come together such that maybe a stuck contact on a relay could cause the left and right indicator circuits to be permanently connected, The change in behaviur of the lights when setting and unsetting the alarm isn't a problem, just a symptom. normal behaviour is all indicators flash when lockiing the car and they flash again if you set the alarm. Then when you unset it from the alarmed state only, all indiactors flash rapidly about 4 times. This isn't happening, but you can hear relays operating so I wonder if there is a feed missing again beacuse of a stuck contact. Peter > Had this very intermittent problem for a while (over 6 months since last > time). When it happens the indicators flash when you press the lock [quoted text clipped - 6 lines] > > TIA All the indicators flashing regardless of direction can be a sign of a bad earth on one of the corners. Ron Robinson > All the indicators flashing regardless of direction can be a sign of a bad > earth on one of the corners. > > Ron Robinson But wouldn't that be at reduced brightness and altered flash rate? Also this goes hand in hand with the loss of flash on alarm set and unset. Peter >> All the indicators flashing regardless of direction can be a sign of a >> bad [quoted text clipped - 3 lines] > > But wouldn't that be at reduced brightness and altered flash rate? Not neccesarily >Also this goes hand in hand with the loss of flash on alarm set and unset. Puzzling, I admit. Sounds as though you are expecting a combination of circuits with a bad earth somewhere to behave logically. Actually it does, but it makes up its own logic... Ron Robinson >>> All the indicators flashing regardless of direction can be a sign of a >>> bad >>> earth on one of the corners. Hi Ron, Having trouble actually finding the earthing points to check...any suggestions there? In the meantime have removed bulbs in turn, thus taking that earth point out of the circuit, ending up with both rears out then put those back and took both fronts out. Behaviour still the same; both sides flashing regardless of which way the flasher switch is set. Any other suggestions? Peter >>>> All the indicators flashing regardless of direction can be a sign of a >>>> bad [quoted text clipped - 9 lines] > > Any other suggestions? Sorry, I was replying theoretically (and from past experience on other cars) rather than practically as I don't have a 406 myself. You could perhaps try bridging from the earth part of the bulbholder to a known good earth in each corner in turn to see if that makes any difference. Ron Robinson > Sorry, I was replying theoretically (and from past experience on other > cars) rather than practically as I don't have a 406 myself. You could > perhaps try bridging from the earth part of the bulbholder to a known good > earth in each corner in turn to see if that makes any difference. > > Ron Robinson Got in the car this morning to find that, although my efforts made no difference last night, the indicators are now working correctly, but the flash on setting and unsetting the alarm are still missing (that's the first time that's happened). I need to look at a proper circuit diagram, but so many things show up as black boxes these days. I found some diagrams at http://peugeot.mainspot.net/wiring406/index.shtml, but they don't show turn signals or alarm. I imagine that there are relay contacts in the alarm ECU that supply 12v directly to the lamp circuits down stream of the turn signal switch. I've had one side or the other stay lit occasionally (i've seen posts where changing the relays is mentioned) , so guess the relays sometimes stick on and perhaps 2 stuck relays with no 12v applied could account for the all lights flashing symptom, but I'm having difficulty imagining what combination of relays could account for the flash when the locking, but not when deadlocking |
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