DTC : P0756: General Description

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Hydraulic pressure supply to the clutch by shift solenoid valve output (D position) 

LINE : Line pressure

CPCA: A/T clutch pressure control solenoid valve A pressure

CPCB: A/T clutch pressure control solenoid valve B pressure

CPCC: A/T clutch pressure control solenoid valve C pressure

CPCD: A/T clutch pressure control solenoid valve D pressure

Shift solenoid valve B is installed on the transmission housing. It is controlled by the ON/OFF signal from the powertrain control module (PCM) to apply line pressure to shift valve B. A signal from the PCM is output to apply A/T clutch pressure control solenoid valve pressure to the correct gear clutch according to the shift schedule. When the signal to shift solenoid valve B from the PCM is on, and the line pressure is applied to shift valve B, it operates against the shift valve B spring. When the signal to shift solenoid valve B from the PCM is off, and the line pressure is discharged, shift valve B is inactive. The PCM monitors the input shaft (mainshaft) speed and the output shaft (countershaft) speed according to the shift status determined by the shift schedule. When an improper gear ratio is output for the shift schedule, the PCM detects a shift solenoid valve B stuck off failure and stores a DTC.