(m)Turn the engine switch on (IG).
(n) Turn the Techstream on.
(o) Enter the following menus: Powertrain / Engine / Trouble Codes.
(p) Check for DTCs.
Result:
B -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair/Removal
A -- CHECK FOR INTERMITTENT PROBLEMS
From 08/2009
2GR-FE ENGINE CONTROL: 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 is
usually 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 set a DTC when the engine switch is turned on (IG).
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN
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