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Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (B1380-U0074) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) >> DTC C1437: Lost Communication with ECM [08/2015 - 08/2019] >> Description

DTC C1437: Lost Communication with ECM [08/2015 - 08/2019]: Description

The skid control ECU receives signals from the ECM via the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
C1437 When the IG1 terminal voltage is 10 V or higher and the vehicle speed is 15 km/h (9 mph) or more, data cannot be sent to the ECM for 2 seconds or more.
  • CAN communication system (Skid control ECU to ECM)
  • Skid control ECU (Brake actuator assembly)