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 is usually 0 V when the ignition switch is turned off. If the output voltage is higher than 7 volts when the ignition switch is turned off, the ECM will illuminate the MIL and set a DTC when the ignition switch is turned on.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

INSPECTION PROCEDURE

1 CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0657)

1. 1
   Connect the intelligent tester to the DLC3.
2. 2
   Turn the ignition switch to the ON position.
3. 3
   Turn the tester on.
4. 4
   Clear the DTC.
5. 5
   Turn the ignition switch off.
6. 6
   Disconnect the battery negative terminal and wait for 1 minute.
7. 7
   Connect the battery negative terminal.
8. 8
   Turn the ignition switch to the ON position for 10 seconds.
9. 9
   Turn the ignition switch off.
10. 10
    Turn the ignition switch to the ON position.
11. 11
    Enter the following menus: DIAGNOSIS / ENHANCED II / DTC INFO / CURRENT CODES.
12. 12
    Read the DTCs.

Result

REPLACE ECM