DTC 2-1

CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: 2-1: EEPROM Communication Error

DTC 2-1 - EEPROM Communication Error

DTC 2-2 - EEPROM Checksum Error

DESCRIPTION

These DTCs are output when an error occurs in the CPU of the mayday ECU assembly.










INSPECTION PROCEDURE

PROCEDURE

1. RESET MAYDAY ECU ASSEMBLY
(a) Exit diagnosis mode and wait for 10 seconds.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for 1 minute.
(c) Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
(d) Turn the ignition switch ON, and then check for the current DTC again.
Result:






B -- CLEAR HISTORIC DTC
A -- Continue to next step.
2. CHECK MAYDAY ECU ASSEMBLY
(a) Press the "SERVICES" button and check the LEXUS Link condition with the LEXUS Link call center.
OK:
System operates normally.
NG:
Current DTC 2-1 or 2-2 exists.
NOTE:
If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU Programming and Relearning.

NG -- REPLACE MAYDAY ECU ASSEMBLY
OK -- END