Locating Battery Blower relay

If I am reading it correctly, you do need an "Intelligent Tester" which of course, I do not possess. My best option seems to be a more recent version of Techstream or one of the apps as mentioned. The Toyota website is dreadful, but I will persevere another day.

 

Thanks. I have an older version of Techstream and will try to update it.

 

I have been using version 7.00.020 but my attempts to update it resulted in a Trojan infection - see 'Download location for techstream'. What I need is something that will operate the HV battery blower fan. The weather has turned cooler again here in the UK and although the fan runs when voltage is applied, I am thinking that it may not be running when called for by the battery CPU. I can only recall it running at high speed once in the past few years and if it has run at a lower speed, I could not hear it.

 

That's good news, but I started the Thread because of the warning lights which seemed to point to the battery cooling "so I dug out the OBD11 and Techstream which I had not used for a couple of years and found the following current DTCs: P3000, P0A84, B1421, C2310 and C2318 There were historic DTCs: B1200, B1269 and B1271."
All good at the moment.

 

Yes, that was what I was hoping for following the tyre well being full of water a few months back. Not the cause in this case as all connections were good and rust free. I see on another HD that I have techstream v.10.10.018 but do any of the versions have a test for the battery fan?

 

Thanks Dave. Just had a look at Torque Pro and it seems that you do need an Android device which I do not have, although I have an old Windows based laptop for Techstream. I am getting a bluetooth OBD connector, so will be able to use apps like Dr Prius and perhaps there are others.

 

That's odd as I do not seem to have that option. Could it be that you have to have a fully paid subscription to Techstream to get the add ons?

 

Following the posts on here, I have had another go at Techstream and feel a bit of an idiot as there is a test for the battery blower, which as it turns out is working properly. Any fault, apart from my own, is due to the left click button on my old Windows based laptop which clearly is not working properly. As I said, it is a long time since I used the laptop along with the software and I must get out of the habit of always assuming that the technology isn't working! Still do not know why I had the red triangle and other warning lights, but I will put it back together and hope for the best. Thanks to all for your input.

 

No problem since I first posted, but hot today and after I had been driving the car for about 10 minutes, up came the warning lights: VSC, Brake system and Master warning lights. The car had been in direct sun for about 4 hours before driving it. A little later I was able to park the car and plug in the Techstream and straight away it came up with P0A84 Hybrid cooling fan control circuit low. A health check then came up with the DTC P3000 Current and P0A84, B1200, B1269 and B1271 in history.

I checked the fan speeds and they all were OK, although re-reading the above reply, I wish I had taken more notice of the voltage at fan, because they did drop as the speed increased and at the highest setting, I believe it was about 4 volts? The temperatures at the battery were 39.2, 41 and 38.7° C. All cells were showing much the same voltage around 14.5 volts?

Having been all through HB-45 and finding nothing wrong, I would welcome any thoughts as to what the problem might be.

 

Thanks for the info. I am thinking that swapping out the parts might be a route to fixing the problem - it gave me a good result on a Miele washing machine! Perhaps start with that blower motor controller which is easier to access and although the connections to it checked out OK. There does not appear to be any test for the actual unit, apart from the fan operating properly. The ECU would be the next step.