drahpla Posted March 12, 2022 Share Posted March 12, 2022 There seems to be no way to adjust it. Is there a way to adjust the base level at least? Maybe somewhere on the back of the light units themselves? I can't see anything obvious. It supposedly has self adjusting headlights, which are controlled, I believe, from an adjuster connected to the rear suspension. Now as it happens I think there is an issue with the torsion beam, in that the near side of the car sits way lower at the rear than the offside does. It's definitely not the springs, as I've just put 2 brand new ones on and it made no difference whatsoever to the issue. So this raises some questions: 1. Can I adjust the lights, either from within the engine bay or somewhere else? 2. Can I adjust the torsion beam so that the load at reast is even across both rear coil springs? Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 13, 2022 Share Posted March 13, 2022 you can recalibrate them: Check the instructions in this powerpoint. https://slideplayer.com/slide/10248235/ 2 Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 13, 2022 Share Posted March 13, 2022 You also have the height control sensor on the rear axle (also indicated in that powerpoint) check that it is not broken or seized Quote Link to comment Share on other sites More sharing options...
Rojie Posted March 13, 2022 Share Posted March 13, 2022 8 hours ago, Chris.ac said: you can recalibrate them: Check the instructions in this powerpoint. https://slideplayer.com/slide/10248235/ Please note, that the link Chris has so kindly provided is downloadable to your own email address for safekeeping. Quote Link to comment Share on other sites More sharing options...
drahpla Posted March 14, 2022 Author Share Posted March 14, 2022 This is superb, thank you. I'm very grateful. Am I right in thinking that the 'SST' (Special Service Tool???) used to jump the pins on the OBD connector is just a piece of wire? I can buy one from Amayama, but it's going to be £50 including delivery! https://www.amayama.com/en/part/toyota/0984318040 Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 14, 2022 Share Posted March 14, 2022 wire,lol, the toyota service tools are way overpriced, I used to use a paperclip 1 Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 14, 2022 Share Posted March 14, 2022 Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 14, 2022 Share Posted March 14, 2022 Just a wire, sometime it has an extra terminal for attaching to a reading device, but its just a wire Quote Link to comment Share on other sites More sharing options...
drahpla Posted March 16, 2022 Author Share Posted March 16, 2022 Many thanks. I'm very grateful. Does the recalibrated setting match the beam heights required to pass a UK MOT? If there's no manual adjustment then I'm kind of stuck, and I'm not at all convinced that the importer I bought the car from actually put through an MOT (I think he had a 'friendly' tester just issue him a certificate). Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 16, 2022 Share Posted March 16, 2022 1 hour ago, drahpla said: Many thanks. I'm very grateful. Does the recalibrated setting match the beam heights required to pass a UK MOT? If there's no manual adjustment then I'm kind of stuck, and I'm not at all convinced that the importer I bought the car from actually put through an MOT (I think he had a 'friendly' tester just issue him a certificate). yes, the japanese standard is practically the same as UK, as they follow the international lighting regulations. What you could check for, is if the previous owners had modified the lights to use LED in the low beams, as they may have disconnected something. Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 16, 2022 Share Posted March 16, 2022 m_be_0027.pdfm_be_0023.pdfm_be_0020.pdfm_be_0017.pdf Here are the electrical manual pages related to the headlights, hopefully of some use diagnosing your issue. Quote Link to comment Share on other sites More sharing options...
drahpla Posted March 16, 2022 Author Share Posted March 16, 2022 Many thanks. I'll check for LED low beams, but I'm reasonably sure they are stock, as the light from the low beam is yellowish, whereas the light from the sidelights is white. It's possibly the side lights that are the major issue, as they light up roadside objects to about the height of the roof of the van. BTW, where did you get a technical manual for the GGH20 in English? Quote Link to comment Share on other sites More sharing options...
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