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Home >> Lexus >> 2022 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (2 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1256: Accumulator Low Pressure [10/2020 - 10/2023] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

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 assembly power on Less than 6 MPa (61.2 kgf/cm2 , 870 psi)
CASE 3

Accumulator pressure Less than 14.62 MPa (149.1 kgf/cm2 , 2120 psi)
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