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Home >> Acura >> 2017 >> RLX Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System / Engine Mechanical - Service, Testing & Troubleshooting (Except Hybrid) >> Connector View >> PCM Inputs and Outputs (2018 2019 2020) >> PCM Connector A (□) (51P) (female terminals)

PCM Connector A (□) (51P) (female terminals)

GHH345728Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 IG1 MISS SOL (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valves
2 Not used  
3 ST CUT RLY1 CL- (STARTER CUT RELAY 1) Drives starter cut relay 1
4 ST CUT RLY2 CL- (STARTER CUT RELAY 2) Drives starter cut relay 2
5 FAN CONTROL (RFC UNIT CONTROL) Drives RFC unit
6 FAN LO SIGNAL (RFC UNIT RELAY CONTROL) Drives RFC unit relay
7 FI MAIN RLY CL- (PGM-FI MAIN RELAY 1) Drives PGM-FI main relay 1 and ignition coil relay
8 FUEL PUMP RLY CL- (PGM-FI MAIN RELAY 2) Drives PGM-FI main relay 2
9 F-CAN A_H (F-CAN COMMUNICATION A SIGNAL HIGH) Sends and receives communication signal
10 F-CAN A_L (F-CAN COMMUNICATION A SIGNAL LOW) Sends and receives communication signal
11 F-CAN D_H (F-CAN COMMUNICATION D SIGNAL HIGH) Sends and receives communication signal
12 F-CAN D_L (F-CAN COMMUNICATION D SIGNAL LOW) Sends and receives communication signal
13 DBW RLY CL- (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) Drives electronic throttle control system (ETCS) control relay
14 FI SUB RLY CL- (PGM-FI SUBRELAY) Drives PGM-FI subrelay
15 VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) Drives EVAP canister vent shut valve
16 Not used  
17 INJ RLY CL- (INJECTOR RELAY) Drives injector relay
18 IG1 FUEL PUMP (IGNITION SIGNAL) Detects ignition signal
19 VCC6 (SENSOR VOLTAGE) Provides sensor reference voltage
20 SG6 (SENSOR GROUND) Sensor ground
21 VGM (MASS AIR FLOW (MAF) SENSOR -SIDE) Ground for MAF sensor
22 ELD (ELECTRICAL LOAD DETECTOR (ELD)) Detects ELD signal
23 A/C MG CLUTCH RLY CL- (A/C COMPRESSOR CLUTCH RELAY) Drives A/C compressor clutch relay
24 BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
25 STOP SW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
26 START DIAG (STARTER SIGNAL LOAD) Detects starter cut relay
27 STS (STARTER SWITCH SIGNAL) Detects starter switch signal
28 FPCD (FUEL PUMP CONTROL MODULE DIAGNOSIS) Detects fuel pump control module diagnosis
29 FPC (FUEL PUMP CONTROL) Sends fuel pump control module control signal
30 PTANK (FUEL TANK PRESSURE (FTP) SENSOR) Detects FTP sensor signal
31 TW2 SENSOR (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) Detects ECT sensor 2 signal
32 FGP (MASS AIR FLOW (MAF) SENSOR +SIDE) Detects MAF sensor signal
33 Not used  
34 Not used  
35 Not used  
36 Not used  
37 Not used  
38 S-NET (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends and receives communication signal
39 SCS (SERVICE CHECK SIGNAL) Detects service check signal
40 Not used  
41 VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage
42 VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage
43 SG3 (SENSOR GROUND) Sensor ground
44 SG4 (SENSOR GROUND) Sensor ground
45 APS1 (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal
46 APS2 (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal
47 Not used  
48 Not used  
49 VSP (VEHICLE SPEED SIGNAL OUTPUT) Sends vehicle speed signal
50 CRK OUT (CRANKSHAFT POSITION (CKP) OUTPUT SIGNAL) Sends CKP signal to engine mount control unit
51 TDC OUT (CAMSHAFT POSITION (CMP) OUTPUT SIGNAL) Sends CMP signal to engine mount control unit