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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Electronically Controlled Brake System (HV) - Diagnostic Codes (08 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C12F8-12: ECB Solenoid Control "A" Circuit Short to Battery; DTC C12F8-14: ECB Solenoid Control "A" Circuit Short to Ground or Open [11/2023 - ] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different variant/trim than selected.
Related DTCs C12FA: Brake system voltage power supply relay open circuit
C12FB: Brake system voltage power supply relay circuit high
Required Sensors/Components (Main) No. 2 skid control ECU (brake actuator assembly)
Required Sensors/Components (Related) No. 2 skid control ECU (brake actuator assembly)
Frequency of Operation Continuous
Duration 0.054 seconds: C12FA (Case 1) and C12FA (Case 2)
0.204 seconds: C12FA (Case 3)
4.5 seconds: C12FB
MIL Operation Immediately
Sequence of Operation None
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