Idle Speed Control - General Description
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This diagnosis monitors the stability of the idle speed. If the actual idle speed is not within a calibratible range, above or below the idle speed set-point then the failure criteria is fulfilled. The appropriate DTC will be stored.
Illustration Idle speed control
EMS PARAMETER WITH DESCRIPTION
| EMS Parameter | Description |
|---|---|
| N | Engine speed |
| N_SP_IS | Idle speed setpoint |
| LV_CH_N_SP_IS | catalyst heating by increased idle speed |
| N_IS_MAX | Maximum idle speed |
| N_IS_MIN | Minimum idle speed |