toyota yaris 05 problem
Discussion
Sounds like a fairly major wiring issue, get it to a garage/dealer asap for some diagnostic checks !!
(at a guess, it sounds like the CAN bus has gone for a wonk, as the things that are showing issues are not other wise connected particularly,)
(or a duff ECU)
(or a dodgy earth)
(or...)
(or...)
(like i say, get it looked at by someone who knows what they are doing (it'll be cheaper in the long run))
(at a guess, it sounds like the CAN bus has gone for a wonk, as the things that are showing issues are not other wise connected particularly,)
(or a duff ECU)
(or a dodgy earth)
(or...)
(or...)
(like i say, get it looked at by someone who knows what they are doing (it'll be cheaper in the long run))
05 Yaris is not on CAN 
get a diagnostic scan carried out for kick off and see what gives 
as Max Torque says get somone who knows what they are doing otherwise you may well be pissing in the wind 
dont just start randomly changing things either 
get a diagnostic scan carried out for kick off and see what gives as Max Torque says get somone who knows what they are doing otherwise you may well be pissing in the wind dont just start randomly changing things either Edited by Simon says on Saturday 2nd April 23:10
There are a few versions of the yaris and I only checked one, but the one I looked at is CAN. The coolant temp sensor signal goes direct to the engine control unit and from there is a CAN signal to the AC module. The coolant fan relay is triggered by both/either the engine module or the AC module.
A missing coolant temp signal could cause the symptoms as could a CAN fault. Since the management light is on than a code read shpould really be the next step.
A missing coolant temp signal could cause the symptoms as could a CAN fault. Since the management light is on than a code read shpould really be the next step.
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