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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Engine Control System (A25A-FKS) (W/O Canister Pump Module) - Diagnostic Codes (4 Of 4), Circuit Tests & Symptom Tests) >> SFI SYSTEM (w/o Canister Pump Module) >> DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [11/2018 - 08/2020] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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