Idle air control motor circuits
A short is detected in one or more of the idle air motor circuits.
A short condition detected in the idle air control motor
Automatic Idle Speed (AIS) motor driver circuit shorted
target idle not reached, vacuum leak found
manifold air temperature (mat) sensor or circuit - high temperature indicated (1990 and earlier models)
and 26 Air fuel ratio fault (for ES300 SC300 models)