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PCM CONNECTOR FOR INPUTS AND ...

PCM Connector for Inputs and Outputs

PCM Connector for Inputs and Outputs
Connector Index
PCM Connector A (51P)
PCM Connector B (51P)
PCM Connector C (51P)

PCM Inputs and Outputs at PCM Connector A (□) (51P)

No. Terminal name Description

1*3 IG1 MISS SOL (POWER SOURCE FOR SOLENOID Power source for solenoid valves
VALVES)
2 Not used
3 F CAN_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
4 F CAN_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
5 Not used
6 Not used
7 FI MAIN RLY CL- (PGM-FI MAIN RELAY 1/IGNITION Drives PGM-FI main relay 1 and ignition coil relay
COIL RELAY)

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No. Terminal name Description

8*1 STS (STARTER SWITCH SIGNAL) Detects starter switch signal
9 FI MAIN RLY OUT (POWER SOURCE) Power source for PCM circuit
10 Not used
11*1 ST CUT RLY2 CL- (STARTER CUT RELAY 2) Drives starter cut relay 2
12 A/C MG CLUTCH RLY CL- (A/C COMPRESSOR Drives A/C compressor clutch relay
CLUTCH RELAY)
13 BRK DIAG (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
14 Not used
15 FAN LO SIGNAL (RADIATOR FAN RELAY) Drives radiator fan relay
16 FAN HI SIGNAL (FAN CONTROL RELAY/A/C Drives fan control relay and A/C condenser fan relay
CONDENSER FAN RELAY)
17 S-NET (SERIAL COMMUNICATION FOR Sends and receives communication signal
IMMOBILIZER)
18*2 PADDLE SW UP (PADDLE SHIFTER+ (UPSHIFT Detects (paddle shifter+ (upshift switch)) signal
SWITCH))
18*4 CLUTCH SW(SA) (CLUTCH SWITCH A) Detects clutch pedal position switch A signal

19*2 PADDLE SW DOWN (PADDLE SHIFTER- Detects (paddle shifter- (downshift switch)) signal
(DOWNSHIFT SWITCH))
20 Not used
21*3 SHIFT LOCK SOL (SHIFT LOCK SOLENOID) Drives shift lock solenoid

21*6 REVERSE LOCK SOL (REVERSE LOCKOUT Drives reverse lockout solenoid
SOLENOID)
22 Not used
23 Not used
24*1 START DIAG (STARTER SIGNAL LOAD) Detects starter signal
25 BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
26 VSP (VEHICLE SPEED SIGNAL OUTPUT) Sends vehicle speed sensor signal
27 PD SENSOR (A/C PRESSURE SENSOR) Detects A/C pressure sensor signal
28 APS1 (ACCELERATOR PEDAL POSITION (APP) Detects APP sensor A signal
SENSOR A)

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No. Terminal name Description

29 APS2 (ACCELERATOR PEDAL POSITION (APP) Detects APP sensor B signal
SENSOR B)
30 Not used
31 Not used
32*5 VSV (EVAPORATIVE EMISSION (EVAP) CANISTER Drives EVAP canister vent shut valve
VENT SHUT VALVE)
33 Not used
34 Not used
35 Not used
36 Not used
37 VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage
38 VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage
39*5 PTANK (FUEL TANK PRESSURE (FTP) SENSOR) Detects FTP sensor signal
40 Not used
41 Not used
42 FUEL PUMP RLY CL- (PGM-FI MAIN RELAY 2) Drives PGM-FI main relay 2
43 Not used
44 SCS (SERVICE CHECK SIGNAL) Detects service check signal
45 Not used
46 TW2 SENSOR (ENGINE COOLANT TEMPERATURE Detects ECT sensor 2 signal
(ECT) SENSOR 2)
47 SG5 (SENSOR GROUND) Sensor ground
48 SG4 (SENSOR GROUND) Sensor ground
49 Not used
50 DBW RLY CL- (ELECTRONIC THROTTLE CONTROL Drives electronic throttle control system (ETCS)
SYSTEM (ETCS) CONTROL RELAY) control relay
51*1 ST CUT RLY1 CL- (STARTER CUT RELAY 1) Drives starter cut relay 1
*1: With keyless access system
*2: With paddle shifter
*3: CVT
*4: M/T with keyless access system
*5: USA and Canada models

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*6: M/T

PCM Inputs and Outputs at PCM Connector B (△) (51P)

No. Terminal Name Description

1 PG(GND1) (PCM GROUND) Ground for PCM
2 Not used
3 IG1(F/PUMP) (IGNITION SIGNAL) Detects ignition signal
4*3 LCCLS (CVT LOCK-UP CLUTCH CONTROL SOLENOID Drives CVT lock-up clutch control solenoid valve
VALVE)
5 SG2 (SENSOR GROUND) Sensor ground
6*3 CPCLS (CVT CLUTCH PRESSURE CONTROL Drives CVT clutch pressure control solenoid valve
SOLENOID VALVE)
7*3 DNLS (CVT DRIVEN PULLEY PRESSURE CONTROL Drives CVT driven pulley pressure control solenoid
SOLENOID VALVE) valve
8*3 VEL DD (CVT SPEED SENSOR) Detects CVT speed sensor signal

8*6 NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED Detects output shaft (countershaft) speed sensor
SENSOR) signal

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No. Terminal Name Description

9*3 TATF (TRANSMISSION FLUID TEMPERATURE Detects transmission fluid temperature sensor
SENSOR) signal
10*3 DRLS (CVT DRIVE PULLEY PRESSURE CONTROL Drives CVT drive pulley pressure control solenoid
SOLENOID VALVE) valve
11 CRANK (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal
12*3 SOL B (SHIFT SOLENOID VALVE B) Drives shift solenoid valve B
13 Not used
14 Not used
15 Not used
16 Not used
17 SO2 (SECONDARY HEATED OXYGEN SENSOR Detects secondary HO2S (sensor 2) signal
(SECONDARY HO2S) (SENSOR 2))
18 PG2(GND3) (PCM GROUND) Ground for PCM
19 AFHT (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) Drives A/F sensor (sensor 1) heater
HEATER CONTROL)
20 SO2HT (SECONDARY HEATED OXYGEN SENSOR Drives secondary HO2S (sensor 2) heater
(SECONDARY HO2S) (SENSOR 2) HEATER)
21*3 ATP P (TRANSMISSION RANGE SWITCH P Detects transmission range switch P position signal
POSITION)
22*3 ATP R (TRANSMISSION RANGE SWITCH R Detects transmission range switch R position signal
POSITION)
22*6 BKLT- (BACK-UP LIGHT SWITCH) Detects back-up light switch signal
23 VGP (MASS AIR FLOW (MAF) SENSOR +SIDE) Detects MAF sensor signal
24 VGM (MASS AIR FLOW (MAF) SENSOR -SIDE) Ground for MAF sensor signal
25 Not used
26 Not used
27*7 TAC (EVAPORATOR TEMPERATURE SENSOR) Detects evaporator temperature sensor signal
28 Not used
29 VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage
30 TA (INTAKE AIR TEMPERATURE (IAT) SENSOR) Detects IAT sensor signal
31 LIN (LOCAL INTERCONNECT NETWORK) Sends and receives communication signal
32 Not used

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No. Terminal Name Description

33*6 NSS1 (NEUTRAL POSITION SENSOR) Detects neutral position sensor signal
34 Not used
35 Not used
36 Not used
37 Not used
38 Not used
39*3 PDN (CVT DRIVEN PULLEY PRESSURE SENSOR) Detects CVT driven pulley pressure sensor signal

39*6 NSS2 (NEUTRAL POSITION SENSOR) Detects neutral position sensor signal
40 SO2 SG (SECONDARY HEATED OXYGEN SENSOR Sensor ground for secondary HO2S (sensor 2)
(SECONDARY HO2S (SENSOR 2)) SENSOR
GROUND)
41 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage
42 AFV1 (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) Detects A/F sensor (sensor 1) signal
-SIDE)
43 AFC1 (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) Detects A/F sensor (sensor 1) signal
+SIDE)
44*3 NDR (CVT DRIVE PULLEY SPEED SENSOR) Detects CVT drive pulley speed sensor signal

45*3 NT (TORQUE CONVERTER TURBINE SPEED SENSOR Detects torque converter turbine speed sensor
SIGNAL) signal
46*3 ATP D (TRANSMISSION RANGE SWITCH D Detects transmission range switch D position signal
POSITION)
47*3 ATP L (TRANSMISSION RANGE SWITCH L Detects transmission range switch L position signal
POSITION)
48*3 ATP RVS (TRANSMISSION RANGE SWITCH RVS Detects transmission range switch RVS position
POSITION) signal
49*3 ATP N (TRANSMISSION RANGE SWITCH N Detects transmission range switch N position signal
POSITION)
50*3 ATP S (TRANSMISSION RANGE SWITCH S Detects transmission range switch S position signal
POSITION)
51*3 ATP FWD (TRANSMISSION RANGE SWITCH FWD Detects transmission range switch FWD position
POSITION) signal

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*3: CVT
*6: M/T
*7: With manual A/C

PCM Inputs and Outputs at PCM Connector C (○) (51P)

No. Terminal Name Description

1 VBDBW (IGNITION SIGNAL) Detects ignition signal
2 PG (POWER GROUND ETCS) Ground for PCM
3 MTR 2 (THROTTLE ACTUATOR +SIDE) Drives throttle actuator
4 MTR 1 (THROTTLE ACTUATOR -SIDE) Ground for throttle actuator
5 E EGR (EXHAUST GAS RECIRCULATION (EGR) Drives EGR valve
VALVE)
6 OIL PRESS SW (OIL PRESSURE SWITCH) Detects engine oil pressure signal
7 PC SOL (EVAPORATIVE EMISSION (EVAP) Drives EVAP canister purge valve
CANISTER PURGE VALVE)
8 SVSP (INTAKE MANIFOLD TUNING (IMT) ACTUATOR Drives IMT actuator
+SIDE)
9 SVSM (INTAKE MANIFOLD TUNING (IMT) Drives IMT actuator
ACTUATOR
-SIDE)
10 Not used
11 INJ 4 (No. 4 INJECTOR) Drives No. 4 injector

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No. Terminal Name Description

12 INJ 3 (No. 3 INJECTOR) Drives No. 3 injector
13 INJ 2 (No. 2 INJECTOR) Drives No. 2 injector
14 INJ 1 (No. 1 INJECTOR) Drives No. 1 injector
15 Not used
16 SG3 (SENSOR GROUND) Sensor ground
17 THL2 (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal
18 VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage
19 THL1 (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal
20 LG(GND2) (PCM GROUND) Ground for PCM
21 Not used
22 Not used
23 EGR L (EXHAUST GAS RECIRCULATION (EGR) Detects EGR valve position sensor signal
VALVE POSITION SENSOR)
24 Not used
25 Not used
26 Not used
27 Not used
28 KSGND (KNOCK SENSOR GROUND) Sensor ground for knock sensor
29 KNOCK (KNOCK SENSOR) Detects knock sensor signal
30 Not used
31 Not used
32 Not used
33 Not used
34 Not used
35 Not used
36 Not used
37 Not used
38 Not used
39 Not used
40 SG1 (SENSOR GROUND) Sensor ground
41 TW (ENGINE COOLANT TEMPERATURE (ECT) Detects ECT sensor 1 signal
SENSOR 1)

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No. Terminal Name Description

42 TDC (CAMSHAFT POSITION (CMP) SENSOR) Detects CMP sensor signal
43 VT SOL (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil control solenoid
44 IGN04A (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
45 IGN03A (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil
46 IGN02A (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
47 IGN01A (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil
48*5 VTM (ROCKER ARM OIL PRESSURE SWITCH) Detects rocker arm oil pressure switch signal

48*8 POIL (ROCKER ARM OIL PRESSURE SENSOR) Detects rocker arm oil pressure sensor signal
49 Not used
50 MAP(PB) (MANIFOLD ABSOLUTE PRESSURE (MAP) Detects MAP sensor signal
SENSOR)
51 Not used
*5: USA and Canada models
*8: Mexico models CVT

Portions of materials contained herein are sourced from American Honda Motor Inc., Co.

Copyright 2009 - 2018 Service Repair Solutions, Inc.

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