DTC U0100-00: Lost Communication With ECM/PCM "A" [07/2015 - ]: Contents

DTC No.	Detection Item	Trouble Area	Warning Indicate	Memory	Fail-safe Operation	Note
U010000	Lost Communication With ECM/PCM "A"	Communication error with combination meter	Air bag system warning light Fig 1: Identifying Flashing Pattern: 14 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002 Flashing pattern: 14 Priority ranking: 5	DTC Stored	Not applicable	Drive cycle: Not applicable Self test type: CMDTC self test, ODDTC self test

SYSTEM MALFUNCTION LOCATION	ECM communication error
DETECTION CONDITION	The center airbag sensor assembly does not receive CAN signal from ECM for 5 s or more, or receives CAN signal error from ECM for 0.4 s.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	Malfunction in CAN line between the center airbag sensor assembly and ECM ECM malfunction center airbag sensor assembly malfunction
SYSTEM WIRING DIAGRAM	Not applicable