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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Hybrid Control System - Diagnostic Codes (6 Of 6) & Circuit Tests) >> HYBRID CONTROL SYSTEM (for PHEV Model) >> DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1154-87: Lost Communication with Drive Motor Control Module "A" (ch2) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [12/2023 - ] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
Related DTCs U111A (INF U111A-87): Lost Communication with ECM/PCM Verify communication
U1154 (INF U1154-87): Lost communication with MG ECU verify communication
U1170 (INF U1170-87): Lost Communication with Brake System Control Module Verify communication
Required sensors/components Main: Hybrid vehicle control ECU assembly
Sub: CAN bus line
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation Immediately
Sequence of operation None
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