P0657

2GR-FE ENGINE CONTROL SYSTEM: 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 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

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0657)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTC.
(e) Turn the engine switch off.
(f) Disconnect the battery negative terminal and wait for 1 minute.
(g) Connect the battery negative terminal.
(h) Turn the engine switch on (IG) for 10 seconds.
(i) Turn the engine switch off.
(j) Turn the engine switch on (IG).
(k) Enter the following menus: Powertrain / Engine / Trouble Code.
(l) Read the DTCs.
Result:






B -- CHECK FOR INTERMITTENT PROBLEMS
A -- REPLACE ECM