Zero Point Calibration 4 Runner . Optional method one: Zero Point Calibration Using Jumper wire The following manual procedure may be used in the cases where a Diagnostic Tester is not available. I just had the reason the check engine lights came on for it, but the calibration was not. 2004 Toyota 4runner zero point calibration (Ernest Richardson) It will also be neccessary to perform after installing bigger tires, lift kits and after. This worked for me and I. CAUTION: While performing the Zero Point Calibration, do NOT tilt, move, or shake the vehicle. This worked for me and I. You can do the calibration by clicking Engine and ECT > > special function > > and then click. Toyota 4runner Zero Point Calibration Toyota 4runner Zero Point Calibration Toyota 4Runner Forum - Largest 4Runner Forum - One cause ...