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PCM A/T Control System Inputs and Outputs at PCM Connector A □ (49P)

Fig 1: PCM Connector A □ (49P) Terminal Layout
G06628613Courtesy of AMERICAN HONDA MOTOR CO., INC.
PCM CONNECTOR A □ (49P) TERMINALS REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
A1 ORN VBSOL2 (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valves With ignition switch ON (II). battery voltage
With ignition switch LOCK (0) about 0 V
A2 YEL/BLK SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: about 0 V
A6 RED/YEL MRLY (PGM-FI MAIN RELAY 1)
  • Drives PGM-FI main relay 1
  • Power source for DTC memory
With ignition switch ON (II): about 0 V
With ignition switch LOCK (0): battery voltage
A8 LT BLU BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: about 0 V
With brake pedal pressed: battery voltage
A16 BLU/BLK ATPP (TRANSMISSION RANGE SWITCH P POSITION) Detects transmission range switch P position signal In P: about 0 V
In any position other than P: battery voltage
A17 GRN D3SW (D3 SWITCH) Detects D3 switch signal input With ignition switch ON (II), D3 switch released: battery voltage
With ignition switch ON (II), D3 switch pressed: about 0 V
A18 ORN APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal input With ignition switch ON (II) and accelerator pedal pressed: about 4.7 V
With ignition switch ON (II) and accelerator pedal released about 1.0 V
A19 YEL APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal input With ignition switch ON (II) and accelerator pedal pressed: about 2.3 V
With ignition switch ON (II) and accelerator pedal released about 0 5 V
A24 GRN VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
A25 WHT VCC4(SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
A26 BLK SG3 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
A27 RED SG4 (SENSOR GROUND) Sensor ground Less than 0 2 V at all times
A32 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With service check signal shorted using the HDS about 0 V
With service check signal opened: about 5.0 V
A48 WHT CANH (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal With ignition switch ON (II): about 2.5V (pulses)
A49 RED CANL (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal With ignition switch ON (II). about 2.5V (pulses)