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Reasons for Throttle Pedal Signal 1 and 2 Rationality Fault?

1 Answers

MaverickAnn

07/30/25 9:49am

Possible causes of the fault: Based on the fault symptoms, the unresponsiveness to throttle input is caused by the fault code P213564, indicating a rationality fault between throttle pedal signal 1 and throttle pedal signal 2. Troubleshooting process: 1. Data reading: The engine data stream was read to analyze the voltage difference between throttle pedal signal 1 and throttle pedal signal 2. It was found that the throttle pedal signal voltage was normal. 2. Accelerator pedal: The signal voltage of accelerator pedal 1 was 0.8V, and the signal voltage of the accelerator pedal was 0.4V, maintaining a proportional relationship, which is normal. However, the ECU reported a fault code that could not be erased. 3. Throttle input: Attempts were made to synchronize the changes of the two signals through pedal throttle input, maintaining the proportional relationship, but the fault code still could not be erased. The inability to erase the fault code means the vehicle cannot be handed over to the customer, necessitating a thorough investigation of this fault point. 4. Disconnecting the pedal connector: The pedal connector was disconnected to measure the pin voltage. The power supply of 5V, signal lines, and ground lines all showed no abnormalities. Replacing the throttle pedal did not resolve the issue.

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