2001 Yaris flashing hazards when ignition off!!!?! - Toyota Yaris Forums

CTScott · 01-17-2012, 11:39 AM

My first thought was that it was an alarm system that got in a strange mode after the battery died, but as you don't have an alarm, that can't be the case.

On your 2001, all of the circuitry involved is located within the flasher relay module. The module gets ignition switched power from the 10A GAUGE fuse and constant power from the 10A HAZ fuse.

The flasher module has two outputs to the left and right side lights and three inputs from the left and right turn signal switches and from the hazard light switch.

If your car has power door locks, then there is an extra connection to the hazard input from the door lock control relay. Since the problem only occurs with the ignition off, if you have power locks then I have a feeling that the Door Lock Control Relay may be the culprit.

If you have power locks, try pulling the 25A D/L fuse from the under dash fuse panel to see if that makes the problem stop.

4odh4n · 01-18-2012, 05:29 AM

Quote:

Originally Posted by CTScott

My first thought was that it was an alarm system that got in a strange mode after the battery died, but as you don't have an alarm, that can't be the case.

On your 2001, all of the circuitry involved is located within the flasher relay module. The module gets ignition switched power from the 10A GAUGE fuse and constant power from the 10A HAZ fuse.

The flasher module has two outputs to the left and right side lights and three inputs from the left and right turn signal switches and from the hazard light switch.

If your car has power door locks, then there is an extra connection to the hazard input from the door lock control relay. Since the problem only occurs with the ignition off, if you have power locks then I have a feeling that the Door Lock Control Relay may be the culprit.

If you have power locks, try pulling the 25A D/L fuse from the under dash fuse panel to see if that makes the problem stop.

hey man, thanks for taking the time to post the info above

unfortunately removing the 25A D/L fuse did not stop the hazards from flashing, removing the 10A HAZ fuse stops them, or removing the flasher relay itself.

I have since also managed to get my hands on a service/repair manual for the yaris, and as you said, all the circuitry for the hazards is located within the relay its self, so I am figuring it has to be at fault? I have found a local breakers yard were i can get another relay to try so I will see how i get on with that

CTScott · 01-18-2012, 07:27 AM

Quote:

Originally Posted by 4odh4n

hey man, thanks for taking the time to post the info above

unfortunately removing the 25A D/L fuse did not stop the hazards from flashing, removing the 10A HAZ fuse stops them, or removing the flasher relay itself.

I have since also managed to get my hands on a service/repair manual for the yaris, and as you said, all the circuitry for the hazards is located within the relay its self, so I am figuring it has to be at fault? I have found a local breakers yard were i can get another relay to try so I will see how i get on with that

Actually, you would prefer that the issue be the flasher module, rather than the D/L control relay, as the flasher is much less expensive. From your test I would agree that the flasher module is bad.

4odh4n · 01-19-2012, 05:32 AM

Well the plot thickens on this problem!, I got flasher relay yesterday and it was no good, so i started a bit of further investigation.
I checked a few different things just to rule them out, i disconnected the hazard light button in the dash, i disconnected the connector from the dash fuse box that sends the power to the flasher bulbs, none of these made any difference so I went bac to the central locking as it appeared to be the only thing that could be causing the problem.

I decided to investigate what sort of electrics went to the door lock motors, as the car had been recently valeted i figured if water had got in there somehow it could be causing the problem. I started taking the door card off, and when i pulled out the plug for the door unit with elec. window switches and door lock button etc, the flashers stopped!!

I am slightly pleased in that i have finally narrowed down the problem down!, but now I dont know if it will be the swtich unit in the door, or if the problem does indeed go back to the door lock control unit. I have my suspisions it might only be the switch unit in the door, as if the door lock control unit was at fault, removing the fuses controlling it should have stopped the flashers?

I am going to try and source a used door switch unit, but if that does not cure the problem and as it is an 11 year old car I think i am going to source the wire which is going from the door lock control unit to the flasher relay and disconnect it, will leave me with no flasher confirmation that that doors have locked or unlocked, but it should cure my problem.

01-17-2012, 11:39 AM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	My first thought was that it was an alarm system that got in a strange mode after the battery died, but as you don't have an alarm, that can't be the case. On your 2001, all of the circuitry involved is located within the flasher relay module. The module gets ignition switched power from the 10A GAUGE fuse and constant power from the 10A HAZ fuse. The flasher module has two outputs to the left and right side lights and three inputs from the left and right turn signal switches and from the hazard light switch. If your car has power door locks, then there is an extra connection to the hazard input from the door lock control relay. Since the problem only occurs with the ignition off, if you have power locks then I have a feeling that the Door Lock Control Relay may be the culprit. If you have power locks, try pulling the 25A D/L fuse from the under dash fuse panel to see if that makes the problem stop. __________________

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01-19-2012, 05:32 AM	#4
4odh4n Drives: 2001 Yaris 1.0l Join Date: Jan 2012 Location: Eire! Posts: 4	Well the plot thickens on this problem!, I got flasher relay yesterday and it was no good, so i started a bit of further investigation. I checked a few different things just to rule them out, i disconnected the hazard light button in the dash, i disconnected the connector from the dash fuse box that sends the power to the flasher bulbs, none of these made any difference so I went bac to the central locking as it appeared to be the only thing that could be causing the problem. I decided to investigate what sort of electrics went to the door lock motors, as the car had been recently valeted i figured if water had got in there somehow it could be causing the problem. I started taking the door card off, and when i pulled out the plug for the door unit with elec. window switches and door lock button etc, the flashers stopped!! I am slightly pleased in that i have finally narrowed down the problem down!, but now I dont know if it will be the swtich unit in the door, or if the problem does indeed go back to the door lock control unit. I have my suspisions it might only be the switch unit in the door, as if the door lock control unit was at fault, removing the fuses controlling it should have stopped the flashers? I am going to try and source a used door switch unit, but if that does not cure the problem and as it is an 11 year old car I think i am going to source the wire which is going from the door lock control unit to the flasher relay and disconnect it, will leave me with no flasher confirmation that that doors have locked or unlocked, but it should cure my problem.