Component Location
General Description

A malfunction is 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.

DTC Description

If the RAM in PCM has errors, PCM sets P0604 and MIL(Malfunction Indication Lamp) turns on.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Check internal CPU

● Faulty PCM

Enable Conditions

-

Threshold value

● RAM has errors

Diagnosis Time

● Continuous

MIL On Condition

● 1 driving cycle

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