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Home >> Toyota >> 2021 >> 4Runner Trail, 4WD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (C0040-C137B) >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) >> DTC C1203: ECM Communication Circuit Malfunction [08/2015 - 08/2019] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:

When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information (Refer to CALIBRATION [08/2015 - 08/2019] ).