DTC U1E00: Lost Communication of Authentication Data With Gateway "A" PU-Bus; DTC U1E07: Lost Communication of Authentication Data With ECM/PCM PU-Bus; DTC U1E08: Lost Communication of Authentication Data With VDC PU-Bus; DTC U1E10: Lost Communication of Authentication Data With TCM PU-Bus [11/2021 - ]: Procedure

1. Turn the ignition switch to ON.
2. Using the GTS, perform the DTC clear of the control module in which the DTC was detected.
3. Using the GTS, read the DTC of the control module in which it was detected.

   Is a DTC other than DTC U1E00 recorded as current code?

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

PERFORM INSTRUCTED PROCEDURES 

1. Perform the diagnosis of DTCs other than DTC U1E00 first.

Result: 

B 

See step  2

1. Perform the diagnosis for CAN communication system.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

See step  3

1. In order to check poor contact of the control module in which the DTC was detected, reconnect it.

   HINT: 

   If the DTC is still detected, replace the control module in which the DTC was detected.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  1