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Home >> Toyota >> 2020 >> RAV4 XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 43 (Can Communication System (HV) - Circuit Tests (1 Of 6) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Brake Booster (Skid Control ECU) Communication Stop Mode [12/2021 - ] >> Description

Brake Booster (Skid Control ECU) Communication Stop Mode [12/2021 - ]: Description

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Detection Item Symptom Trouble Area
Brake Booster (Skid Control ECU) Communication Stop Mode  
Any of the following conditions are met:
  • Communication stop for "Brake Booster" is indicated on the "Communication Bus Check" screen of the Techstream.

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

  • Communication stop history for "Brake Booster" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Brake Booster" is 6 or more.)

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

  • Communication system DTCs (DTCs that start with U) that correspond to "Brake Booster (Skid Control ECU) Communication Stop Mode" in "DTC Combination Table" are output.

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

  • Brake booster with master cylinder assembly (No. 1 skid control ECU) branch line or connector
  • Power source circuit of brake booster with master cylinder assembly (No. 1 skid control ECU)
  • Brake booster with master cylinder assembly (No. 1 skid control ECU) ground circuit
  • Brake booster with master cylinder assembly (No. 1 skid control ECU)