The purpose of this logic is to prevent a vehicle from leaving the assembly plant or service station without a VIN in its EEPROM memory. If the VIN writing is not programmed or incompatible, the PCM determines that a fault exists and a DTC is stored.And the MIL(Malfunction Indication Lamp) turns on.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Internal control module check | 1. Poor connection 2. PCM 3. Programming error |
Enable Conditions |
•
- | |
Threshold Value |
•
RAM has errors
•
Discordance between the real checksum and the memorized checksum
•
The version discordance among PCU S/W or Calibration | |
Diagnostic Time |
•
Continuous | |
MIL ON Condition |
•
1 Driving cycle |
