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Home >> Toyota >> 2021 >> Highlander LE, FWD >> Repair and Diagnosis (Single Page) >> Electrical >> Starter >> Stop And Start System - Diagnostic Codes (3 Of 3) & Circuit Tests (1 Of 3) >> Stop And Start System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [11/2023 - ] >> Monitor Strategy
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Monitor Strategy

Related DTCs U0100: Lost communication with engine control module (starter / generator control module) verify communication
U0129: Lost communication with brake system control module (starter / generator control module) verify communication
U115C: Lost communication with engine control module (starter / generator control module, chassis local bus) verify communication
Required Sensors/Components (Main) Engine stop and start ECU
Required Sensors/Components (Related) -
Frequency of Operation Continuous
Frequency of Operation 1 seconds: U0100, U0101
2.22 seconds: U0129
10.6 seconds: U115C
Duration 2 driving cycles
Sequence of Operation None