PCM Connector for Inputs and Outputs
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 Honda Fit, 2019 Honda Fit, 2018 Honda Fit, 2017 Honda Fit, and 2016 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
| Connector Index |
|---|
| PCM Connector A (51P) |
| PCM Connector B (51P) |
| PCM Connector C (51P) |
PCM Inputs and Outputs at PCM Connector A (□) (51P)
| Terminal number | Terminal name | Description |
|---|---|---|
| 1 | F-CAN_L (CAN COMMUNICATION SIGNAL LOW) | Sends and receives communication signal |
| 2 | F-CAN_H (CAN COMMUNICATION SIGNAL HIGH) | Sends and receives communication signal |
| 3 | FI MAIN RLY CL- (PGM-FI MAIN RELAY 1) | Drives PGM-FI main relay 1 |
| 4 | IG1 FUEL PUMP (IGNITION SIGNAL) | Detects ignition signal |
| 5 | FI MAIN RLY OUT (POWER SOURCE) | Power source for PCM |
| 6 | INJ RLY OUT (INJECTOR POWER SOURCE) | Power source for PCM (injector driver) |
| 7 | INJ RLY OUT (INJECTOR POWER SOURCE) | Power source for PCM (injector driver) |
| 8 | Not used | |
| 9*1 | CLUTCH SW(SHIFT UP) (CLUTCH PEDAL POSITION SWITCH C) | Detects clutch pedal position switch C signal |
| 9*2 | ATP-R (TRANSMISSION RANGE SWITCH R POSITION) | Detects transmission range switch R position signal |
| 10*1 | CLUTCH SW(SA) (CLUTCH PEDAL POSITION SWITCH A) | Detects clutch pedal position switch A signal |
| 10*2 | ATP-P (TRANSMISSION RANGE SWITCH P POSITION) | Detects transmission range switch P position signal |
| 11*2 | IG1 MISS SOL (POWER SOURCE FOR SOLENOID VALVES) | Power source for solenoid valves |
| 12*2 | SHIFT LOCK SOL (SHIFT LOCK SOLENOID) | Drives shift lock solenoid |
| 13 | A/C MG CLUTCH RLY CL- (A/C COMPRESSOR CLUTCH RELAY) | Drives A/C compressor clutch relay |
| 14 | FUEL PUMP RLY CL- (IMMOBILIZER FUEL PUMP RELAY) | Drives PGM-FI main relay 2 |
| 15 | INJ RLY CL- (INJECTOR DRIVER RELAY) | Drives injector relay |
| 16 | Not used | |
| 17*3 | VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) | Drives EVAP canister vent shut valve |
| 18 | Not used | |
| 19 | DBW RLY CL- (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) | Drives electronic throttle control system (ETCS) control relay |
| 20*1 | CLUTCH SW(I/S) (CLUTCH PEDAL POSITION SWITCH D) | Detects clutch pedal position switch D signal |
| 20*4 | PADDLE SW DOWN (PADDLE SHIFTER - (DOWNSHIFT SWITCH)) | Detects paddle shifter - (downshift switch) signal |
| 21 | S-NET (SERIAL COMMUNICATION FOR IMMOBILIZER) | Sends and receives communication signal |
| 22 | FAN LO SIGNAL (RADIATOR FAN CONTROL) | Drives radiator fan relay |
| 23 | FAN HI SIGNAL (RADIATOR FAN CONTROL) | Drives A/C condenser fan relay |
| 24 | BKSWNC (BRAKE PEDAL POSITION SWITCH) | Detects brake pedal position switch signal |
| 25*5 | VSP (VEHICLE SPEED SIGNAL OUTPUT) | Sends vehicle speed signal |
| 26 | LIN(BATT SENSOR) (LOCAL INTERCONNECT NETWORK) | Sends and receives communication signal |
| 27 | Not used | |
| 28 | Not used | |
| 29 | Not used | Not used |
| 30 | SG4 (SENSOR GROUND) | Sensor ground |
| 31 | VCC4 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 32 | Not used | |
| 33*6 | ST CUT RLY1 CL- (STARTER CUT RELAY 1) | Drives starter cut relay 1 |
| 34*6 | ST CUT RLY2 CL- (STARTER CUT RELAY 2) | Drives starter cut relay 2 |
| 35 | Not used | |
| 36 | Not used | |
| 37 | STOP LT (BRAKE PEDAL POSITION SWITCH) | Detects brake pedal position switch signal |
| 38 | APS2 (ACCELERATOR PEDAL POSITION (APP) SENSOR B) | Detects APP sensor B signal |
| 39 | SG5 (SENSOR GROUND) | Sensor ground |
| 40 | VCC5 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 41*7 | PD SENSOR (A/C PRESSURE SENSOR) | Detects A/C pressure sensor signal |
| 42*8 | TEVA (EVAPORATOR TEMPERATURE SENSOR) | Detects evaporator temperature sensor signal |
| 43 | TW2 SENSOR (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) | Detects ECT sensor 2 signal |
| 44 | Not used | |
| 45 | APS1 (ACCELERATOR PEDAL POSITION (APP) SENSOR A) | Detects APP sensor A signal |
| 46 | Not used | |
| 47*6 | START DIAG (STARTER SIGNAL LOAD) | Detects starter cut relay signal |
| 48 | SCS (SERVICE CHECK SIGNAL) | Detects service check signal |
| 49*4 | PADDLE SW UP (PADDLE SHIFTER + (UPSHIFT SWITCH)) | Detects paddle shifter + (upshift switch) signal |
| 50*9 | CLUTCH SW(CRUISE) (CLUTCH PEDAL POSITION SWITCH B) | Detects clutch pedal position switch B signal |
| 51*6 | STS (STARTER SWITCH SIGNAL) | Detects starter switch signal |
*1: M/T
*2: CVT
*3: USA and Canada models
*4: With paddle shifter
*5: With navigation and/or with moonroof
*6: With keyless access system
*7: With A/C
*8: With manual A/C
*9: USA and Canada models M/T
PCM Inputs and Outputs at PCM Connector B (Δ) (51P)
| Terminal number | Terminal name | Description |
|---|---|---|
| 1 | INJH1 (No. 1 INJECTOR +) | Drives No. 1 injector |
| 2 | INJL1 (No. 1 INJECTOR -) | Drives No. 1 injector |
| 3 | INJH4 (No. 4 INJECTOR +) | Drives No. 4 injector |
| 4 | INJL4 (No. 4 INJECTOR -) | Drives No. 4 injector |
| 5 | INJH2 (No. 2 INJECTOR +) | Drives No. 2 injector |
| 6 | INJL2 (No. 2 INJECTOR -) | Drives No. 2 injector |
| 7 | INJH3 (No. 3 INJECTOR +) | Drives No. 3 injector |
| 8 | INJL3 (No. 3 INJECTOR -) | Drives No. 3 injector |
| 9 | INJ GND1 (INJECTOR GROUND) | Ground for PCM (injector driver) |
| 10 | INJ GND2 (INJECTOR GROUND) | Ground for PCM (injector driver) |
| 11 | PG3 (POWER GROUND) | Ground for PCM |
| 12 | LG (LOGIC GROUND) | Ground for PCM |
| 13*1 | LCCLS (CVT LOCK-UP CLUTCH CONTROL SOLENOID VALVE) | Drives CVT lock-up clutch control solenoid valve |
| 14*1 | CPCLS (CVT CLUTCH PRESSURE CONTROL SOLENOID VALVE) | Drives CVT clutch pressure control solenoid valve |
| 15 | PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) | Drives EVAP canister purge valve |
| 16 | Not used | |
| 17 | Not used | |
| 18 | VTS (ROCKER ARM OIL CONTROL SOLENOID) | Drives rocker arm oil control solenoid |
| 19 | Not used | |
| 20 | Not used | |
| 21*2 | VTM (ROCKER ARM OIL PRESSURE SWITCH) | Detects rocker arm oil pressure switch signal |
| 22 | Not used | |
| 23 | Not used | |
| 24 | IGN01 (No. 1 IGNITION COIL PULSE) | Drives No. 1 ignition coil |
| 25 | IGN02 (No. 2 IGNITION COIL PULSE) | Drives No. 2 ignition coil |
| 26 | IGN03 (No. 3 IGNITION COIL PULSE) | Drives No. 3 ignition coil |
| 27 | IGN04 (No. 4 IGNITION COIL PULSE) | Drives No. 4 ignition coil |
| 28 | Not used | |
| 29 | Not used | |
| 30 | TDCAM (CAMSHAFT POSITION (CMP) SENSOR) | Detects CMP sensor signal |
| 31 | Not used | |
| 32 | VGP (MASS AIR FLOW (MAF) SENSOR +SIDE) | Detects MAF sensor signal |
| 33 | VGM (MASS AIR FLOW (MAF) SENSOR -SIDE) | Ground for MAF sensor |
| 34 | OPSEN (ROCKER ARM OIL PRESSURE SENSOR) | Detects rocker arm oil pressure sensor signal |
| 35 | Not used | |
| 36 | Not used | |
| 37 | Not used | |
| 38 | CRKN (CRANKSHAFT POSITION (CKP) SENSOR) | Detects CKP sensor signal |
| 39 | Not used | |
| 40 | Not used | Not used |
| 41 | Not used | |
| 42 | INTA (INTAKE AIR TEMPERATURE (IAT) SENSOR 2) | Detects IAT sensor 2 signal |
| 43*3 | PTANK (FUEL TANK PRESSURE (FTP) SENSOR) | Detects FTP sensor signal |
| 44 | Not used | |
| 45 | Not used | |
| 46 | THL1 (THROTTLE POSITION (TP) SENSOR A) | Detects TP sensor A signal |
| 47 | THL2 (THROTTLE POSITION (TP) SENSOR B) | Detects TP sensor B signal |
| 48 | VCC3 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 49 | SG3 (SENSOR GROUND) | Sensor ground |
| 50 | TW (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1) | Detects ECT sensor 1 signal |
| 51 | TA (INTAKE AIR TEMPERATURE (IAT) SENSOR 1) | Detects IAT sensor 1 signal |
*1: CVT
*2: USA and Canada models or Mexico models CVT
*3: USA and Canada models
PCM Inputs and Outputs at PCM Connector C (◦) (51P)
| Terminal number | Terminal name | Description |
|---|---|---|
| 1 | PG2 (POWER GROUND) | Ground for PCM |
| 2 | VBDBW (IGNITION SIGNAL ETCS) | Detects ignition signal |
| 3 | Not used | |
| 4 | E-EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE) | Drives EGR valve |
| 5*1 | DRLS (CVT DRIVE PULLEY PRESSURE CONTROL SOLENOID VALVE) | Drives CVT drive pulley pressure control solenoid valve |
| 6 | VTC (VTC OIL CONTROL SOLENOID VALVE) | Drives VTC oil control solenoid valve |
| 7 | AFHT (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) HEATER CONTROL) | Drives A/F sensor (sensor 1) heater |
| 8 | PG2 (POWER GROUND) | Ground for PCM |
| 9 | SO2HT (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) HEATER) | Drives secondary HO2S (sensor 2) heater |
| 10*1 | DNLS (CVT DRIVEN PULLEY PRESSURE CONTROL SOLENOID VALVE) | Drives CVT driven pulley pressure control solenoid valve |
| 11 | MTR1 (THROTTLE ACTUATOR -SIDE) | Ground for throttle actuator |
| 12 | MTR2 (THROTTLE ACTUATOR +SIDE) | Drives throttle actuator |
| 13 | HPUMP H (HIGH PRESSURE FUEL PUMP +) | Drives fuel control solenoid (build into high pressure fuel pump) |
| 14 | HPUMP L (HIGH PRESSURE FUEL PUMP -) | Drives fuel control solenoid (build into high pressure fuel pump) |
| 15 | Not used | |
| 16 | Not used | |
| 17 | Not used | |
| 18 | Not used | |
| 19*1 | SOL B (SHIFT SOLENOID VALVE B) | Drives shift solenoid valve B |
| 20 | Not used | |
| 21*1 | NDR DD (CVT DRIVE PULLEY SPEED SENSOR) | Detects CVT drive pulley speed sensor signal |
| 22 | Not used | |
| 23*2 | RVS LCK (REVERSE LOCKOUT SOLENOID) | Drives reverse lockout solenoid |
| 23*1 | ATP-RVS (TRANSMISSION RANGE SWITCH RVS POSITION) | Detects transmission range switch RVS position signal |
| 24*1 | ATP-N (TRANSMISSION RANGE SWITCH N POSITION) | Detects transmission range switch N position signal |
| 25*1 | ATP-D (TRANSMISSION RANGE SWITCH D POSITION) | Detects transmission range switch D position signal |
| 26*1 | ATP-FWD (TRANSMISSION RANGE SWITCH FWD POSITION) | Detects transmission range switch FWD position signal |
| 27 | Not used | |
| 28 | SG7 (SENSOR GROUND) | Sensor ground |
| 29 | KS (KNOCK SENSOR) | Detects knock sensor signal |
| 30 | VCC2 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 31 | SG2 (SENSOR GROUND) | Sensor ground |
| 32*1 | VEL DD (CVT SPEED SENSOR) | Detects CVT speed sensor signal |
| 33*2 | NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) | Detects output shaft (countershaft) speed sensor signal |
| 33*1 | NT (TORQUE CONVERTER TURBINE SPEED SENSOR SIGNAL) | Detects torque converter turbine speed sensor signal |
| 34 | Not used | |
| 35 | Not used | |
| 36 | Not used | |
| 37*1 | TATF (ATF TEMPERATURE SENSOR) | Detects transmission fluid temperature sensor signal |
| 38 | SO2 (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) | Detects secondary HO2S (sensor 2) signal |
| 39 | SO2SG (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S (SENSOR 2)) SENSOR GROUND) | Sensor ground for secondary HO2S (sensor 2) |
| 40 | EGRL (EXHAUST GAS RECIRCULATION (EGR) VALVE POSITION SENSOR) | Detects EGR valve position sensor signal |
| 41 | VCC1 (SENSOR VOLTAGE) | Provides sensor reference voltage |
| 42 | SG1 (SENSOR GROUND) | Sensor ground |
| 43*1 | ATP-S (TRANSMISSION RANGE SWITCH S POSITION) | Detects transmission range switch S position signal |
| 44*3 | ATP-L (TRANSMISSION RANGE SWITCH L POSITION) | Detects transmission range switch L position signal |
| 45 | PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) | Detects MAP sensor signal |
| 46 | PF (FUEL PRESSURE SENSOR) | Detects fuel rail pressure sensor signal |
| 47 | AFS- (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) -SIDE) | Detects A/F sensor (sensor 1) signal |
| 48 | AFS+ (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) +SIDE) | Detects A/F sensor (sensor 1) signal |
| 49*1 | PDN (CVT DRIVEN PULLEY PRESSURE SENSOR) | Detects CVT driven pulley pressure sensor signal |
| 50 | Not used | |
| 51 | Not used |
*1: CVT
*2: M/T
*3: Without paddle shifter