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Last Modified: 9-16-2014 6.6 C Doc ID: RM000002I3U0HJX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0657; Actuator Supply Voltage Circuit / Open; 2015 MY Tundra [08/2014 - ] 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 ignition switch is turned off. If the output voltage is higher than 7 V when the ignition switch is turned off, the ECM will illuminate the MIL and store a DTC when the ignition switch is turned to ON. DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0657 Throttle actuator power supply error (1 trip detection logic) ECM MONITOR STRATEGY Related DTCs None Required sensors/Components (Main) ECM Required sensors/Components (Related) Throttle actuator Duration - MIL operation Immediate TYPICAL ENABLING CONDITIONS Ignition switch From ON to OFF Throttle actuator power supply voltage 7 V or more TYPICAL MALFUNCTION THRESHOLDS Throttle actuator power supply ON CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. 1. Turn the ignition switch to ON and turn the Techstream on. 2. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation). 3. Turn the ignition switch off and wait for at least 30 seconds. 4. Turn the ignition switch to ON and turn the Techstream on. 5. 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0657; Actuat... |