Circuit description
Idle speed is controlled by the ETCS (Electronic Throttle Control System). The ETCS consists of 1) one-valve-type throttle body, 2) throttle actuator that operates the throttle valve, 3) throttle position sensor that detects the throttle valve opening angle, 4) accelerator pedal sensor that detects the position of the accelerator pedal, and 5) ECM that controls the ETCS. Based on the target idle speed, the ECM controls the throttle actuator so that the throttle valve opening angle is maintained properly.
DTC DETECTION CONDITION
| DTC No. | DTC detection conditions | Suspected parts |
|---|---|---|
| P0506 | Engine speed deviates from the target engine speed for 30 seconds or more (actual engine speed - target engine speed <= -100 r/min) (2 trips detection logic) |
|
| P0507 | Engine speed deviates from the target engine speed for 30 seconds or more (actual engine speed - target engine speed >= 200 r/min) (2 trips detection logic) |