PCM A/T Control System Inputs and Outputs at PCM connector B (Δ) (49P)

Fig 1: Identifying PCM A/T Control System Connector B

Courtesy of AMERICAN HONDA MOTOR CO., INC.

TERMINAL DESCRIPTION AND REFERENCE

Terminal number	Wire color	Terminal name	Description	Signal
B1	BLK	PG2 (POWER GROUND)	Ground circuit for PCM	Less than 0.2 V at all times
B2	LT GRN	VBSOL (POWER SOURCE FOR SOLENOID VALVES)	Power source for solenoid valves	With ignition switch ON (II): battery voltage
B3	YEL	IGP (POWER SOURCE)	Power source for PCM	With ignition switch ON (II): battery voltage
B10	PUR	LSB (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B)	Drives A/T clutch pressure control solenoid valve B	With ignition switch ON (II): current controlled
B21	PNK	LSC (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C)	Drives A/T clutch pressure control solenoid valve C	With ignition switch ON (II): current controlled
B34	BLU	SG1 (SENSOR GROUND)	Sensor ground	Less than 0.2 V at all times
B36	GRN	VCC1 (SENSOR VOLTAGE)	Provides sensor reference voltage	With ignition switch ON (II): about 5.0 V
B37	RED	NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR)	Detects input shaft (mainshaft) speed sensor signal	With ignition switch ON (II): about 0 V or about 5.0 V With engine at idling in N: pulses
B38	TAN	NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR)	Detects output shaft (countershaft) speed sensor signal	With ignition switch ON (II): about 0 V or about 5.0 V While driving: pulses
B40	BLK	PG1 (POWER GROUND)	Ground circuit for PCM	Less than 0.2 V at all times
B41	BRN	LG2 (LOGIC GROUND)	Ground circuit for PCM	Less than 0.2 V at all times
B42	GRY	IG1 (IGNITION SIGNAL)	Detects ignition signal	With ignition switch ON (II): battery voltage
B43	TAN	LSD (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE D)	Drives A/T clutch pressure control solenoid valve D	With ignition switch ON (II): current controlled
B44	WHT	PLA (LINE PRESSURE SOLENOID VALVE A)	Drives line pressure solenoid valve A	With engine running With low line pressure: battery voltage With normal line pressure: about 0 V