Lexus Troubleshooting Questions? Ask a Lexus Expert
I am sorry that you have not been helped yet. I just came online and saw your question
I need the brand and model number of your Scan tool you are using to see if it is capable of doing the calibration procedure.
Please remember that I am not there and therefore may need to ask for more information at times
Ok, I just re-read your post. There is a 2nd data link connector which is located in the engine compartment - see attached- this is the one you do the zero calibration at, not the one under the dash.
Shift the lever in P position and turn the ignition switch ON, repeat connecting and releasing Ts and E1 terminals of DLC1 four times or more for eight secs After that do not move the vehicle for 15 secs. or more.
That is the whole calibration process
Ok, that means that there is a fault in either stability control or abs system, usually a component failure
We need to retrieve the fault codes. At the same Data link connector in the engine compartment, you will use a jumper wire between E1 and Tc pins and turn key to on position and read the flashes of the vsc warning light to get the codes - see attachment
do this and let me know the code numbers
Ok, give me a few minutes to look these up
Ok, the abs 25 code is for the hydraulic brake booster. Most likely the booster is faulty, but may be a short in the wiring harness, so we need to do the test I have attached for you.
VSC code 43 is for malfunction in the deceleration sensor, which is either a faulty sensor or faulty abs/vsc control module. Unfortunately the only testing for this code REQUIRES a Lexus dealer level scan tool.
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