I originally posted this issue on another thread (
zero point calibration for 06 4runner?) but have no answers if this is a correct procedure to obtain the zero point on the '07 4Runner.
I think I searched through all related topics but could not find any procedure described by users for 2007 versions. Earlier procedures do not apply (different pins on DLC3/OBD2).
The reason I want to do zero point calibration is VSC TRAC, VSC OFF, ABS, SLIP lights appear some times when making turns. They're off when the ignition is switched on again. CEL/MIL always off.
This is what I found in the BC-21/22 for '06 manuals:
2. Clear zero point calibration.
(a) Turn the ignition switch to the ON position.
(b) Connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds. (according to the pics: TS - pin 12, CG - pin 4).
(c) Check that the warning light indicates the normal system code.
3. Perform zero point calibration of yaw rate and acceleration sensor.
(a) Procedures for test mode:
(1) Turn ignition switch off.
(2) Connect terminals TS and CG of the DLC3.
(3) Check that the steering wheel is in the straight-ahead position and the shift lever in P position.
(4) Turn the ignition switch to the ON position.
(5) Keep the vehicle in a stationary condition on a level surface for 2 seconds or more.
(6) Check that VSC TRAC warning light is blinking in test mode.
NOTICE: The VSC TRAC warning light stays on when obtaining the zero point.
I managed to get to the 3. (6) when ABS and VSC blinking but VSC does not want to stay on and therefore I'm not able to finish this procedure successfully.
I'd appreciate any feedback.