P0657

3UR-FE ENGINE CONTROL: SFI SYSTEM: P0657: Actuator Supply Voltage Circuit / Open

DTC P0657 - Actuator Supply Voltage Circuit / Open

DESCRIPTION

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 V when the engine switch is turned off, the ECM will illuminate the MIL and store DTC(s) when the engine switch is turned on (IG).






MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Clear DTC DTC Check / Clear.
(b) Turn the engine switch off.
(c) Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
(d) Connect the cable to the negative (-) battery terminal.
(e) Turn the engine switch on (IG) for 10 seconds.
(f) Turn the engine switch off.
(g) Turn the engine switch on (IG).
(h) Check DTC.
OK:
P0657 is not output.
NG -- REPLACE ECM
OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems