DTC U0100-211: Lost Communication with ECM / PCM "A"; DTC U0100-212: Lost Communication with ECM / PCM "A"; DTC U0100-530: Lost Communication with ECM / PCM "A": Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK DTC OUTPUT (ALL)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Check for DTCs of all systems by following the prompts on the Techstream screen.

Check if DTCs are output.

Result

Result	Proceed to
Hybrid vehicle control ECU outputs P2532-772.	A
Hybrid vehicle control ECU does not output P2532-772 (w/ Smart Key System).	B
Hybrid vehicle control ECU does not output P2532-772 (w/o Smart Key System).	C

B → See step 2

C → See step 4

A → See step 3

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
GO TO DTC CHART. Refer to DTC P2532-772: Ignition Switch Run Position Circuit High
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING