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PCM Inputs and Outputs at PCM Connector A (■) (44P)

Fig 1: Identifying PCM Connector A (44P)
G06609723Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINAL REFERENCE

Terminal number Wire color Terminal name Description Signal
4 PUR FANL (RADIATOR FAN CONTROL) Drives radiator fan relay With radiator fan running about 0 V
With radiator fan stopped: battery voltage
5 GRY FANH (RADIATOR FAN CONTROL) Drives A/C condenser fan relay With A/C condenser fan running: about 0 V With A/C condenser fan stopped: battery voltage
6 GRN 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 in LOCK (0). battery voltage
8 ORN IGP (POWER SOURCE) Power source for PCM circuit With ignition switch ON (II): battery voltage
9 BLK SG6 (SENSOR GROUND) Sensor ground Less than 0 2 V at all times
10 GRY VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) Drives EVAP canister vent shut valve With ignition switch ON (II): battery voltage
14 RED ACC (A/C COMPRESSOR CLUTCH RELAY) Drives A/C compressor clutch relay With compressor on: about 0 V With compressor off: battery voltage
15 BRN IMOFPR (IMMOBILIZER FUEL PUMP RELAY) Drives PGM-FI main relay 2 (FUEL PUMP) About 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage
With engine running: about 0 V
16 LT GRN ACPD (A/C PRESSURE SENSOR) Detects A/C pressure sensor signal With A/C switch on- about 1.7-4.8 V (depending on A/C pressure)
17 ORN APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal With ignition switch ON (II) and accelerator pedal pressed: about 4.1V With ignition switch ON (II) and accelerator pedal released about 1.0 V
18 PUR APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal With ignition switch ON (II) and accelerator pedal pressed about 2 4V
With ignition switch ON (II) and accelerator pedal released: about 0.5 V
19 RED VCC6 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
20 YEL ETCSRLY (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) Drives electronic throttle control system (ETCS) control relay With ignition switch ON (II) about 0 V
21 LT BLU SUBRLY (AIR FUEL RATIO (A/F) SENSOR RELAY) Drives A/F sensor relay With ignition switch ON (II) about 0 V
22 ORN PSPSW (POWER STEERING PRESSURE SWITCH SIGNAL) Detects PSP switch signal At idle with steering wheel straight ahead, about 0 V At idle with steering wheel at full lock: battery voltage
23 ORN ELD (ELECTRICAL LOAD DETECTOR (ELD)) Detects ELD signal With ignition switch ON (II). about 0.1 - 4.8 V (depending on electrical load)
24 LT GRN VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5 0V
25 BRN VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
26 WHT FTP (FUEL TANK PRESSURE (FTP) SENSOR) Detects FTP sensor signal With ignition switch ON (II) and fuel fill cap removed: about 2.5 V
27 RED SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: battery voltage
29 BLU VSSOUT (VEHICLE SPEED SIGNAL OUTPUT) Sends vehicle speed sensor signal Depending on vehicle speed, pulses
31 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With service check signal shorted using the HDS about 0 V
With service check signal open: about 5.0 V
33 GRN ECT2 (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) Detects ECT sensor 2 signal With ignition switch ON (II): about 0.1 -4.8 V (depending on engine coolant temperature)
34 BLU SG5 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
35 LT BLU SG4 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
36 WHT CANH (CAN COMMUNICATION SIGNAL HIGH) Sends communication signal With ignition switch ON (II): pulses (about 2 5 V)
37 RED CANL (CAN COMMUNICATION SIGNAL LOW) Sends communication signal With ignition switch ON (II): pulses (about 2 5 V)
39 BRN BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With ignition switch ON (II) and brake pedal released: battery voltage
With ignition switch ON (II) and brake pedal pressed: about 0 V
40 LT GRN BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: about 0 V With brake pedal pressed: battery voltage
41 BLU D3 SW (D3 SWITCH) Detects D3 switch With ignition switch ON (II):
  • With D3 switch ON (II): about 0 V
  • With D3 switch OFF: battery voltage
42 PNK WEN (WRITE ENABLE SIGNAL) Detects write enable signal With ignition switch ON (II): about 0 V
44 GRN S-NET5V (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends serial communication signal With ignition switch ON (II): pulses
With the key removed from the ignition switch: about 5.0 V