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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Electronically Controlled Brake System (Diagnostic Codes) (7 Of 7) & Symptom Tests) >> Electronically Controlled Brake System >> DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0120: Lost Communication With Starter / Generator Control Module; DTC U0123: Lost Communication With Yaw Rate Sensor Module; DTC U0124: Lost Communication With Lateral Acceleration Sensor Module; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0128: Lost Communication With EPB Module; DTC U0140: Lost Communication with Body Control Module; DTC U0151: Lost Communication With Restraints Control Module; DTC U0293: Lost Communication With Hybrid Vehicle Control System [08/2019 - ] >> Component Operating Range
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Component Operating Range

U0074 (CASE 1 AND 9)

Both of the following conditions are met -
IG1 voltage Higher than 10 V
CAN Bus Not bus off
U0074 (CASE 2)

All of the following conditions are met -
HV communication failure detection Valid
IG1 voltage Higher than 10 V
CAN controller reset due to transmission lock Invalid
U0074 (CASE 3 AND 4)

Communication status with acceleration sensor (yaw rate and acceleration sensor) Valid
U0074 (CASE 5 AND 6)

Communication status with yaw rate sensor (yaw rate and acceleration sensor) Valid
U0074 (CASE 7 AND 8)

Communication status with steering angle sensor Valid
U0074 (CASE 10)

Both of the following conditions are met -
IG1 voltage Higher than 10 V
CAN controller reset due to transmission lock Invalid
U0100 (CASE 1 AND 2)

Communication status with ECM assembly Valid
U0125 (CASE 1 AND 2)

Communication status with acceleration sensor (yaw rate and acceleration sensor) Valid
U0140

Communication status with main body ECU (multiplex network body ECU) Valid
U0293 (CASE 1 AND 2)

Communication status with Hybrid vehicle control ECU assembly Valid
U1106

Communication status with parking brake ECU assembly Valid
U1107

Communication status with certification ECU (smart key ECU assembly) Valid
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