DIAGNOSTIC FUNCTION
TCM checks the consistency between EEPROM and the backup memory.
DESCRIPTIONS OF MONITOR METHODS
When the ignition switch is turned to the "ON" position, TCM determines that the writing to the EEPROM area had failed last time the ignition switch was turned to the "LOCK" (OFF) position.
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
Sensor (The sensor below is determined to be normal)
LOGIC FLOW CHARTS (Monitor Sequence)
DTC SET CONDITIONS
Judgment Criteria
- Calculated checksum is not same as memorized checksum.
OBD-II DRIVE CYCLE PATTERN
Ignition switch: ON (start the engine and keep it for 10 seconds or more)
PROBABLE CAUSES
- Damaged wiring harness and connectors
- Malfunction of TCM (Faulty EEPROM)