IMMOBILIZER CONTROL SYSTEM
BE -277
DTC P1695 EMS MEMORY ERROR
COMPONENT LOCATION
E786EAFF
Refer to DTC P1610.
GENERAL DESCRIPTION
EDFD08C5
The relevant data for the immobilizer function are stored at permanent memory (EEPROM or Flash etc.).
The immobilizer data are stored by three independent entries.
The data from EEPROM are evaluated by ?2 of 3 decision“ . That means all three entries are read and the content is
compared before authentication process.
If the contents of all entries are equal, the authentication will run without additional measures.
If only the contents of two entries are equal, the authentication will run and fault code "EEPROM defective" is stored at
ECM.
If the contents of all three entries are different from each other, no authentication will be possible and the fault code
"EEPROM defective" will be stored. The limp home function cannot be activated. The ECM shall be replaced if the
EEPROM related fault occurs again after new teaching of all keys.
DTC DESCRIPTION
EE7F16B5
The ECM sets DTC P1694 if there’s any fault in EMS internal permanent memory(EEPROM or Flash etc.
DTC DETECTING CONDITION
EC4D1C22
Item
Detecting Condition
Possible Cause
DTC Strategy
Enable Conditions
• IG ON
Threshold value
Detecting time
FAIL SAFE
• Faulty EMS
SCHEMATIC DIAGRAM
EAA3850E
Refer to DTC P1610.