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Air suspension problems LS400 (Toyota Celsior UCF21)
Hi everyone!
I bought my car from Japan 2021, with mileage 78500 km, everything was great, I was happy, but after 1 year, my car starts laying down from right side(specially rear wheel), after engine start, the air compressor also start and the body of the car began to level out. I checked and replaced of the thrust on body position sensor because it was “stuck”, after that the rear part of car body was very high and solid, I changed position of thrust on sensor, nothings helped, I tried scan air suspension with techstream v. 10(cracked) but I can’t enter to this system, maybe guys you can help me and explain how I can enter to air suspension system for set 0 on the sensors? also I replaced rear right air strut and now the car lying on the front wheel, and now after starting the engine, air compressor is not starting, I take the jack and raise the right front side until the compressor starts, I really tired guys(( yesterday I took a wire and check errors from DLC 1, on the dashboard “High HI” blinked 7 times and 3 it is mean the error #73 ([REG] terminal voltage is less than 1.5V when engine is running.) I don’t know what it’s mean. oh also when I replaced spark plugs, I forgot takeoff the battery wire and takes short circuits and burned 120 A fuse (maybe this whole information will a little bit helps to understand you my issues. p.s sorry for my English body position sensor link that I replaced Fuse what I burned
Hi everyone!
I bought my car from Japan 2021, with mileage 78500 km, everything was great, I was happy, but after 1 year, my car starts laying down from right side(specially rear wheel), after engine start, the air compressor also start and the body of the car began to level out. I checked and replaced of the thrust on body position sensor because it was “stuck”, after that the rear part of car body was very high and solid, I changed position of thrust on sensor, nothings helped, I tried scan air suspension with techstream v. 10(cracked) but I can’t enter to this system, maybe guys you can help me and explain how I can enter to air suspension system for set 0 on the sensors? also I replaced rear right air strut and now the car lying on the front wheel, and now after starting the engine, air compressor is not starting, I take the jack and raise the right front side until the compressor starts, I really tired guys(( yesterday I took a wire and check errors from DLC 1, on the dashboard “High HI” blinked 7 times and 3 it is mean the error #73 ([REG] terminal voltage is less than 1.5V when engine is running.) I don’t know what it’s mean. oh also when I replaced spark plugs, I forgot takeoff the battery wire and takes short circuits and burned 120 A fuse (maybe this whole information will a little bit helps to understand you my issues. p.s sorry for my English body position sensor link that I replaced Fuse what I burned
error Techstream, after trying to enter air suspension system
I don't know if this would be helpful. The attached zip file contains the diagnostic section for electronically modulated suspension (North American Lexus service manual).
I don't know if this would be helpful. The attached zip file contains the diagnostic section for electronically modulated suspension (North American Lexus service manual).
Mate, do you have any idea why i can’t enter to air suspension sys, through the Techstream?
The only thing I can think of is that your TIS subscription may not support it.
As an alternative, you can try to access the sir suspension system through the DLC1 and DLC2 connectors as described in the Pre-Check section of the attachment previously uploaded. It's kind of similar to OBD-1 systems (count the blinking dash light). At least you'll be able to see if there are trouble codes set.
The only thing I can think of is that your TIS subscription may not support it.
As an alternative, you can try to access the sir suspension system through the DLC1 and DLC2 connectors as described in the Pre-Check section of the attachment previously uploaded. It's kind of similar to OBD-1 systems (count the blinking dash light). At least you'll be able to see if there are trouble codes set.
I wrote about DLC above “…..yesterday I took a wire and check errors from DLC 1, on the dashboard “High HI” blinked 7 times and 3 it is mean the error #73 ([REG] terminal voltage is less than 1.5V when engine is running.) I don’t know what it’s mean.”. My problem is, I need set “0” in air suspension system, through DLC 1 is impossible
I wrote about DLC above “…..yesterday I took a wire and check errors from DLC 1, on the dashboard “High HI” blinked 7 times and 3 it is mean the error #73 ([REG] terminal voltage is less than 1.5V when engine is running.) I don’t know what it’s mean.”
It is normal to see Trouble Code 73 if the engine is off. If the engine is running, it means that the Suspension ECU isn't getting a power signal from the alternator.
The description for Trouble Code 73 is attached below. This page was included in the zip file attached to an earlier post.
It is normal to see Trouble Code 73 if the engine is off. If the engine is running, it means that the Suspension ECU isn't getting a power signal from the alternator.
The description for Trouble Code 73 is attached below. This page was included in the zip file attached to an earlier post.
Mate, can you tell me about air suspension sensors, Which of the sensors regulate the position of the body? Can I set “0” without Techstream?
10-29-22, 02:39 PM
Air suspension problems LS400 (Toyota Celsior UCF21)
