P0657

2UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0657: Actuator Supply Voltage Circuit / Open
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 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).





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC

(a) Clear DTC SFI System.

(b) Turn the power 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 power switch on (IG) for 10 seconds.

(f) Turn the power switch off.

(g) Turn the power switch on (IG).

(h) Check DTC.

OK:

P0657 is not present.

NG -- REPLACE ECM Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems