DTC U0129 Lost Communication with Brake System Control Module

DESCRIPTION

The combination meter communicates with the skid control ECU via the CAN line.

DTC Code	DTC Detection Condition	Trouble Area
U0129	When 15 seconds have elapsed after the engine is started and IG voltage is 10.5 V or more while no communication with the skid control ECU continues for 3 seconds or more (no communication with the ECM or skid control ECU continues for 60 seconds or more).	CAN communication system

Dtc U0129 Lost Communication With Brake System Control Module. METER / GAUGE / DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

1.CHECK FOR DTC

Check for DTCs and note any codes that are output ().

Clear the DTCs ().

Recheck for DTCs ().

Result
Result	Proceed to
CAN communication system DTC is not output	A
CAN communication system (for LHD) DTC is output	B
CAN communication system (for RHD) DTC is output	C

If CAN communication system DTC U0129 and another DTC are output at the same time, perform troubleshooting for CAN communication system DTC U0129 first.

B

Go to CAN COMMUNICATION SYSTEM ()

C

Go to CAN COMMUNICATION SYSTEM ()

A

USE SIMULATION METHOD TO CHECK ()