DTC U0129-220: Lost Communication with Brake System Control Module; DTC U0129-222: Lost Communication with Brake System Control Module; DTC U0129-527: Lost Communication with Brake System Control Module; DTC U0129-528: Lost Communication with Brake System Control Module; DTC U0140-146: Lost Communication with Body Control Module; DTC U0151-763: Lost Communication with Airbag ECU; DTC U0164-594: Lost Communication with A/C ECU; DTC U0164-827: Lost Communication with A/C ECU: 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 3

C → See step 4

A → See step 2

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
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING