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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 108 (Electronically Controlled Brake System (Hybrid) - Diagnostic Codes (2 Of 5)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1256: Accumulator Low Pressure [06/2018 - ] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

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CASE 1

Accumulator pressure increase when pump motor is operating Less than 0.25 MPa (2.5 kgf/cm2 , 36 psi)
CASE 2

Accumulator pressure after skid control ECU (brake booster with master cylinder assembly) power on Less than 6 MPa (61.2 kgf/cm2 , 870 psi)
CASE 3

Accumulator pressure Less than 14 MPa (142.8 kgf/cm2 , 2031 psi)
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