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DIAGNOSIS 7A2-79
DTC P1750 (Flash Code 51) Low & Reverse Brake Fail-safe Valve Failure
Low & Reverse Brake Fail Valve (B) Control Valve Upper Body Low & Reverse Brake Fail Valve (A) Control Valve Lower Body
• When the oil pressure generated and low & reverse brake pressure switch operates off/on twice, the TCM detected an operation failure of the low & reverse brake fail-safe valve in D, 3, 2, L range. • When the vehicle is running, the gear position selected at the trouble detection is held and the lock-up is inhibited. • After the vehicle stopped, all solenoid operations stop (OFF) and the gear is fixed to the 3rd. • Stick of low & reverse brake fail-safe valve. • Low & reverse brake pressure switch does not turn on. • Short circuit to ground of harness low & reverse brake pressure switch. • Poor connection of each connector of harness in low & reverse brake pressure switch. |