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

Fig 1: Identifying PCM Connector A (44P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONNECTOR TERMINAL REFERENCE

Terminal number	Wire color	Terminal name	Description	Signal
1	LT GRN	VBSOL (POWER SOURCE FOR SOLENOID VALVES)	Power source for solenoid valve	With ignition switch ON (II): battery voltage
2	GRN	MPMON1 (BRAKE BOOSTER PRESSURE MONITOR A)	Detects brake booster pressure sensor signal	With ignition switch ON (II): about 3.0 V At idle: about 1.0 V (depending on engine speed)
4	RED	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	PUR	MRLY (PGM-FI MAIN RELAY 1)	Drives PGM-FI main relay 1	With ignition switch ON (II): about 0 V With ignition switch in LOCK (0): battery voltage
7	BLU	STS (STARTER SWITCH SIGNAL)	Detects starter switch signal	With ignition switch in START (III): battery voltage With ignition switch in any position other than START (III): about 0 V
8	YEL	IGP1 (POWER SOURCE 1)	Power source for PCM circuit	With ignition switch ON (II): battery voltage
9	PNK	SG6 (SENSOR GROUND)	Sensor ground	Less than 0.2 V at all times
10	LT GRN	VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE)	Drives EVAP canister vent shut valve	With ignition switch ON (II): battery voltage
12	LT GRN	STC (STARTER CUT RELAY)	Drives starter cut relay	With ignition switch in START (III): battery voltage With ignition switch in any position other than START (III): about 0 V
13	BRN	BKSWNC (BRAKE PEDAL POSITION SWITCH)	Detects idle stop 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
14	GRY	ACC (A/C COMPRESSOR CLUTCH RELAY)	Drives A/C compressor clutch relay	With compressor ON: about 0 V With compressor OFF: battery voltage
15	GRN	IMOFPR (IMMOBILIZER FUEL PUMP RELAY)	Drives PGM-FI main relay 2	About 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage With engine running: about 0 V
16	BLU	ACPD (A/C PRESSURE SENSOR)	Detects A/C pressure sensor signal	With A/C switch ON: about 1.4- 4.8 V (depending on A/C pressure)
17	YEL	APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A)	Detects APP sensor A signal	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
18	PUR	APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B)	Detects APP sensor B signal	With ignition switch ON (II) and accelerator pedal pressed: about 2.4 V With ignition switch ON (II) and accelerator pedal released: about 0.5 V
19	YEL	VCC6 (SENSOR VOLTAGE)	Provides sensor reference voltage	With ignition switch ON (II): about 5.0 V
20	RED	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	ORN	SUBRLY (PGM-FI SUBRELAY)	Drives PGM-FI subrelay	With ignition switch ON (II) about 0 V
23	PNK	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 5.0 V
25	BRN	VCC4 (SENSOR VOLTAGE)	Provides sensor reference voltage	With ignition switch ON (II): about 5.0 V
26	PUR	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	GRY	SLS (SHIFT LOCK SOLENOID)	Drives shift lock solenoid	With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: about 0 V
28	LT BLU	NEP (ENGINE SPEED PULSE)	Outputs engine speed pulse	With engine running: pulses
29	BLU	VSSOUT (VEHICLE SPEED SIGNAL OUTPUT)	Sends vehicle speed signal	Depending on vehicle speed: pulses
30(1)	YEL	SUPP (PADDLE SHIFTER + UPSHIFT SWITCH)	Detects paddle shifter + (upshift switch) signal	In S with paddle shifter + (upshift switch) pressed: about 0 V In S with paddle shifter + (upshift switch) released: battery voltage
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 opened: about 5.0 V
32(1)	LT GRN	SDNP (PADDLE SHIFTER - DOWNSHIFT SWITCH)	Detects paddle shifter - (downshift switch) signal	In S with paddle shifter - (downshift switch) pressed: about 0 V In S with paddle shifter - (downshift switch) released: battery voltage
33	WHT	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	LT BLU	SG5 (SENSOR GROUND)	Sensor ground	Less than 0.2 V at all times
35	GRN	SG4 (SENSOR GROUND)	Sensor ground	Less than 0.2 V at all times
36	WHT	CANH (CAN COMMUNICATION SIGNAL HIGH)	Sends and receives communication signal	With ignition switch ON (II): pulses
37	RED	CANL (CAN COMMUNICATION SIGNAL LOW)	Sends and receives communication signal	With ignition switch ON (II): pulses
38	GRN	IMACANH (CAN COMMUNICATION SIGNAL HIGH)	Detects and receives communication signal to motor control module (MCM)	With ignition switch ON (II): pulses
39	PNK	IMACANL (CAN COMMUNICATION SIGNAL LOW)	Detects and receives communication signal to motor control module (MCM)	With ignition switch ON (II): pulses
40	WHT	BKSW (BRAKE PEDAL POSITION SWITCH)	Detects brake pedal position switch signal	Brake pedal released: about 0 V Brake pedal pressed: battery voltage
42	ORN	WEN (WRITE ENABLE SIGNAL)	Detects write enable signal	With ignition switch ON (II): about 0 V
43	YEL	IGP2 (POWER SOURCE 2)	Power source for PCM circuit	With ignition switch ON (II): battery voltage
44	RED	S-NET5V (SERIAL COMMUNICATION FOR IMMOBILIZER)	Sends serial communication signal	With ignition switch ON (II): pulses With key removed from ignition switch: about 1.4V
(1) With paddle shifter model