DTC P0657 Actuator Supply Voltage Circuit / Open
Monitor 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 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 the DTC the next time the power switch is turned on (IG).
DTC No. | DTC Detection Condition | Trouble Area |
P0657 | Throttle actuator power supply error (1 trip detection logic). | ECM |
Monitor strategy
Required sensors/Components (Main) | ECM |
Frequency of operation | Once per driving cycle |
TYPICAL ENABLING CONDITIONS
Power switch | On (IG) to off |
Throttle actuator power supply voltage | 7 V or higher |
TYPICAL MALFUNCTION THRESHOLDS
Electric throttle actuator power supply | ON |
Confirmation driving pattern
- Connect the intelligent tester to the DLC3.
- Turn the power switch on (IG) and turn the tester on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
- Turn the tester off.
- Turn the power switch off.
- Disconnect the tester.
- Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
- Connect the cable to the negative (-) auxiliary battery terminal.
- Turn the power switch on (IG).
- Wait 10 seconds or more.
- Turn the power switch off.
- Wait 15 seconds or more.
- Connect the tester to the DLC3.
- Turn the power switch on (IG) and turn the tester on.
- Wait 5 seconds or more.
- Enter the following menus: Powertrain / Engine and ECT / DTC.
- Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P0657.
- Check the DTC judgment result.
Tester Display Description NORMAL - DTC judgment completed
- System normal
ABNORMAL - DTC judgment completed
- System abnormal
INCOMPLETE - DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
UNKNOWN - Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
Inspection procedure
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work .
HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
1.READ OUTPUT DTC (DTC P0657) |
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Connect the intelligent tester to the DLC3.
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Turn the power switch on (IG).
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Turn the tester on.
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Clear the DTCs .
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Turn the tester off.
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Turn the power switch off.
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Disconnect the tester.
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Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
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Connect the cable to the negative (-) auxiliary battery terminal.
-
Turn the power switch on (IG).
-
Wait 10 seconds or more.
-
Turn the power switch off.
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Wait 15 seconds or more.
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Connect the tester to the DLC3.
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Turn the power switch on (IG) and turn the tester on.
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Wait 15 seconds or more.
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Enter the following menus: Powertrain / Engine and ECT / DTC.
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Read the DTCs.
Result Result Proceed to DTC is not output A DTC P0657 is output B
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A | |
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