P0657
DTC P0657 Actuator Supply Voltage Circuit / OpenDESCRIPTION
DTC Setting Condition:
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage usually is 0 V when the power switch is turned off. If the output voltage is higher than 7 V when the power switch is turned off, the ECM will illuminate the MIL and set a DTC when the power switch is turned ON (IG).
INSPECTION PROCEDURE