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Home >> Acura >> 2014 >> TL Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission >> System Description >> Electronic Control System >> PCM A/T Control System Inputs and Outputs at PCM connector C (O) (49P)
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PCM A/T Control System Inputs and Outputs at PCM connector C (O) (49P)

Fig 1: Identifying PCM Connector C (O) (49P) Connector End View
G08066317Courtesy of AMERICAN HONDA MOTOR CO., INC.
Terminal number Wire color Terminal name Description Signal
C9 GRN/WHT SHC (SHIFT SOLENOID VALVE C) Drives shift solenoid valve C With engine running in N, D, and S during no lock-up condition: about 0 V With engine running in P, R, D, and S during lock-up condition: battery voltage
C12 YEL/BLU VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II)/vehicle in ON mode: about 5.0 V
C14 WHT/GRN OP5SW (TRANSMISSION FLUID PRESSURE SWITCH D (5TH CLUTCH)) Detects transmission fluid pressure switch D (5th clutch) signal With engine running:
  • Without 5th clutch pressure: battery voltage
  • With 5th clutch pressure: about 0 V
C15 GRN/RED SG6 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
C16 GRN/YEL SG2 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
C17 YEL/GRN ATPD (TRANSMISSION RANGE SWITCH D POSITION) Detects transmission range switch D position signal In D: about 0 V In any position other than D: about 5.0 V
C18 BLU/YEL ATPFWD (TRANSMISSION RANGE SWITCH FWD POSITION) Detects transmission range switch D and S position signals In D and S: about 0 V In any position other than D and S: about 5.0 V
C19 RED/WHT ATPRVS (TRANSMISSION RANGE SWITCH RVS POSITION) Detects transmission range switch R position signal In R: about 0 V In any position other than R: about 5.0 V
C20 BLU/YEL SHA (SHIFT SOLENOID VALVE A) Drives shift solenoid valve A With engine running in 1st and 2nd gears: battery voltage With engine running in any gear other than 1st and 2nd: about 0 V
C21 RED LSA (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A) Drives A/T clutch pressure control solenoid valve A With ignition switch ON (II)/vehicle in ON mode: current controlled
C25 WHT ATPR (TRANSMISSION RANGE SWITCH R POSITION) Detects transmission range switch R position signal In R: about 0 V In any position other than R: more than 5.0 V