DTC U0132-87: Lost Communication with Suspension Control Module "A" Missing Message; DTC U1172: Lost Communication with Vehicle Dynamics Control Module (ch2) [03/2019 - 01/2023]: Description

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
U0132-87	Lost Communication with Suspension Control Module "A" Missing Message	No communication from the absorber control ECU continues.	Open or short in V3 bus main line or connector Short in V3 bus branch line or connector Open in absorber control ECU branch line or connector Skid control ECU (brake actuator assembly) ECM Torque vectoring differential ECU assembly (w/ Torque Vectoring Differential System) Absorber control ECU Open or short in No. 6 CAN junction connector Open or short in No. 8 CAN junction connector	HINT: As there is no sub bus monitor ECU for V3 bus, each ECU detects communication stops and stores DTCs.
U1172	Lost Communication with Vehicle Dynamics Control Module (ch2)	No communication from the skid control ECU (brake actuator assembly) continues.	Open or short in V3 bus main line or connector Short in V3 bus branch line or connector Open in torque vectoring differential ECU assembly branch line or connector Skid control ECU (brake actuator assembly) ECM Torque vectoring differential ECU assembly Absorber control ECU Open or short in No. 6 CAN junction connector Open or short in No. 8 CAN junction connector	HINT: As there is no sub bus monitor ECU for V3 bus, each ECU detects communication stops and stores DTCs.

HINT:

This diagnostic procedure is for when the torque vectoring differential ECU assembly (TVD) outputs only DTC U1172, the skid control ECU (brake actuator assembly) (Brake) outputs only DTC U0132-87, or DTC U1172 and U0132-87 are output simultaneously.