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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 127 (Electronically Controlled Brake System (HV) - Diagnostic Codes (11 Of 11), Symptom Tests & Circuit Tests) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U025E-87: Lost Communication with Electronic Brake Booster Control Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message [11/2023 - ] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different variant/trim than selected.
U0100 AND U111A

Monitor runs whenever the following DTCs are not stored C137C: Brake system voltage input out of range low
C137D: Brake system voltage input out of range high
P2531: Brake system voltage input open circuit
U0293: Lost communication with HV (C1-Bus)
Both of the following conditions are met A and B
A. Following conditions are met 3 seconds or more
IGP PT2 (CAN data) On
+BS voltage 9.5 V or more, and less than 17.4 V
B. Following condition is met 3 seconds or more
IGR voltage Higher than 10 V
U0110

Monitor runs whenever the following DTCs are not stored C1021 (Case 1): Brake system voltage input open circuit
C137C: Brake system voltage input out of range low
C137D: Brake system voltage input out of range high
P2531: Brake system voltage input open circuit
U0293: Lost communication with HV (C1-Bus)
Both of the following conditions are met A and B
A. Following conditions are met 3 seconds or more
IGP PT2 (CAN data) On
+BS voltage 9.5 V or more, and less than 17.4 V
B. Following condition is met 3 seconds or more
IGR voltage Higher than 10 V
U0125, U025E AND U1107

Monitor runs whenever the following DTCs are not stored C1021 (Case 1): Brake system voltage input open circuit
C137C: Brake system voltage input out of range low
C137D: Brake system voltage input out of range high
Both of the following conditions are met A and B
A. +BS voltage 9.5 V or more, and less than 17.4 V
B. Following condition is met 3 seconds or more
IGR voltage Higher than 10 V
U0293

Monitor runs whenever the following DTCs are not stored C1021 (Case 1): Brake system voltage input open circuit
C137C: Brake system voltage input out of range low
C137D: Brake system voltage input out of range high
P2531: Brake system voltage input open circuit
Both of the following conditions are met A and B
A. +BS voltage 9.5 V or more, and less than 17.4 V
B. Following condition is met 3 seconds or more
IGR voltage Higher than 10 V
U1150

Monitor runs whenever the following DTCs are not stored C1021 (Case 1): Brake system voltage input open circuit
C137C: Brake system voltage input out of range low
C137D: Brake system voltage input out of range high
P2531: Brake system voltage input open circuit
U0293: Lost communication with HV (C1-Bus)
Both of the following conditions are met A and B
A. +BS voltage 9.5 V or more, and less than 17.4 V
B. Following condition is met 3 seconds or more
IGR voltage Higher than 10 V
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