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Powertrain Control Module (PCM)

G14609706Courtesy of HYUNDAI MOTOR AMERICA

Powertrain Control Module (PCM) malfunctions are detected by using a checksum technique for verifying data. The digital data is composed of zeros and ones. A checksum is the total of all ones in a string of data. By comparing the checksum value with a stored value, a malfunction can be detected.

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