P0657
DTC P0657 Actuator Supply Voltage Circuit / OpenDESCRIPTION
DTC Detection Condition:
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 engine switch is turned off. If the output voltage is higher than 7 volts when the engine switch is turned off, the ECM will illuminate the MIL and set a DTC when the engine switch is turned on.
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
INSPECTION PROCEDURE
Step 1:
