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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 C137B-A2: Brake System Control Module "A" System Voltage System Voltage Low [11/2023 - ] >> Monitor Strategy

Monitor Strategy

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Related DTCs C137C: Brake system voltage input out of range low
Required Sensors/Components (Main) No. 2 skid control ECU (brake actuator assembly)
Required Sensors/Components (Related) No. 2 skid control ECU (brake actuator assembly)
Speed sensor
Frequency of Operation Continuous
Duration 1 second: C137C (Case 6 and 7)
10 seconds: C137C (Case 1, 3, 4 and 5)
60 seconds: C137C (Case 2)
MIL Operation Immediately
Sequence of Operation None