Automotive Diagnostic Command Set Toolkit Help

ndECUReset

  • Updated2024-08-07
  • 1 minute(s) read

ndECUReset

Purpose

Executes the ECUReset service. Resets the ECU.

Format

long ndECUReset(
       TD1 *diagRef,
       unsigned char mode,
       LVBoolean *success);

Input

diagRef

Specifies the diagnostic session handle, obtained from ndOpenDiagnosticOnCANFD or ndOpenDiagnosticOnIPStack and passed to subsequent diagnostic functions. Normally, it is not necessary to manually manipulate the elements of this struct.

mode

Indicates the reset mode:

Hex Description
01 PowerOn

This value identifies the PowerOn ResetMode, a simulated PowerOn reset that most ECUs perform after the ignition OFF/ON cycle. When the ECU performs the reset, the client (tester) re-establishes communication.
02 PowerOnWhileMaintainingCommunication

This value identifies the PowerOn ResetMode, a simulated PowerOn reset that most ECUs perform after the ignition OFF/ON cycle. When the ECU performs the reset, the server (ECU) maintains communication with the client (tester).
03–7F Reserved
80–FF ManufacturerSpecific

This range of values is reserved for vehicle manufacturer-specific use.

Output

success

Indicates successful receipt of a positive response message for this diagnostic service.

Return Value

The return value indicates the function call status as a signed 32-bit integer. Zero means the function executed successfully. A negative value specifies an error, which means the function did not perform the expected behavior. A positive value specifies a warning, which means the function performed as expected, but a condition arose that may require attention.

Use the ndStatusToString function to obtain a descriptive string for the return value.

Description

This function requests the ECU to perform an ECU reset effectively based on the mode value content. The vehicle manufacturer determines when the positive response message is sent.

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