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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 C (o) (51P) (female terminals)

PCM Connector C (o) (51P) (female terminals)

GHH345730Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 PGM (POWER GROUND) Ground for PCM
2 MTR2 (THROTTLE ACTUATOR +SIDE) Drives throttle actuator
3 MTR1 (THROTTLE ACTUATOR -SIDE) Ground for throttle actuator
4 IG1M (IGNITION SIGNAL ETCS) Detects ignition signal
5 SO2HT B1 (REAR SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 1, SENSOR 2) HEATER CONTROL) Drives rear secondary HO2S (Bank 1, Sensor 2) heater
6 AFHT B1 (REAR AIR FUEL RATIO (A/F) SENSOR (BANK 1, SENSOR 1) HEATER CONTROL) Drives rear A/F sensor (Bank 1, Sensor 1) heater
7 SO2HT B2 (FRONT SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 2, SENSOR 2) HEATER CONTROL) Drives front secondary HO2S (Bank 2, Sensor 2) heater
8 AFHT B2 (FRONT AIR FUEL RATIO (A/F) SENSOR (BANK 2, SENSOR 1) HEATER CONTROL) Drives front A/F sensor (Bank 2, Sensor 1) heater
9 Not used  
10 Not used  
11 CRK (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal
12 PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) Drives EVAP canister purge valve
13 E EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE) Drives EGR valve
14 CSS (ROCKER ARM OIL CONTROL SOLENOID B (BANK 1)) Drives rocker arm oil control solenoid B (Bank 1)
15 VTSB1 (ROCKER ARM OIL CONTROL SOLENOID A (BANK 1)) Drives rocker arm oil control solenoid A (Bank 1)
16 VTSB2 (ROCKER ARM OIL CONTROL SOLENOID A (BANK 2)) Drives rocker arm oil control solenoid A (Bank 2)
17 IJF1 (INJECTOR DIAG SIGNAL1) No. 1, No. 5 injector return signal
18 IJF2 (INJECTOR DIAG SIGNAL2) No. 3, No. 4 injector return signal
19 IJF3 (INJECTOR DIAG SIGNAL3) No. 2, No. 6 injector return signal
20 GND3 PG (POWER GROUND) Ground for PCM
21 Not used  
22 VTMB1 (ROCKER ARM OIL PRESSURE SWITCH A (BANK 1)) Detects rocker arm oil pressure switch A (Bank 1) signal
23 VTMB2 (ROCKER ARM OIL PRESSURE SWITCH A (BANK 2)) Detects rocker arm oil pressure switch A (Bank 2) signal
24 Not used  
25 VSB1 (VS CELL+ BANK 1) Detects rear A/F sensor (Bank 1, Sensor 1) VS CELL signal
26 VCENTB1 (VIRTUAL GROUND BANK 1) Provides reference voltage for rear A/F sensor (Bank 1, Sensor 1)
27 Not used  
28 VSB2 (VS CELL+ BANK 2) Detects front A/F sensor (Bank 2, Sensor 1) VS CELL signal
29 VCENTB2 (VIRTUAL GROUND BANK 2) Provides reference voltage for front A/F sensor (Bank 2, Sensor 1)
30 SO2B1 (REAR SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 1, SENSOR 2)) Detects rear secondary HO2S (Bank 1, Sensor 2) signal
31 SO2B2 (FRONT SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 2, SENSOR 2)) Detects front secondary HO2S (Bank 2, Sensor 2) signal
32 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage
33 SG1 (SENSOR GROUND) Sensor ground
34 VCMSW (ROCKER ARM OIL PRESSURE SWITCH B (BANK 1)) Detects rocker arm oil pressure switch B (Bank 1) signal
35 Not used  
36 Not used  
37 IPB1 (IP CELL+ BANK 1) Detects rear A/F sensor (Bank 1, Sensor 1) pump cell signal
38 IPB2 (IP CELL+ BANK 2) Detects front A/F sensor (Bank 2, Sensor 1) pump cell signal
39 SO2SGB1 (REAR SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 1, SENSOR 2) SENSOR GROUND) Sensor ground for rear secondary HO2S (Bank 1, Sensor 2)
40 SO2SGB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (BANK 2, SENSOR 2) SENSOR GROUND) Sensor ground for front secondary HO2S (Bank 2, Sensor 2)
41 KSB1 (KNOCK SENSOR 1 (BANK 1)) Detects knock sensor 1 (Bank 1) signal
42 KSSGB1 (KNOCK SENSOR 1 (BANK 1) GROUND) Sensor ground for knock sensor 1 (Bank 1)
43 KSB2 (KNOCK SENSOR 2 (BANK 2)) Detects knock sensor 2 (Bank 2) signal
44 KSSGB2 (KNOCK SENSOR 2 (BANK 2) GROUND) Sensor ground for knock sensor 2 (Bank 2)
45 PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal
46 EGRL (EXHAUST GAS RECIRCULATION (EGR) VALVE POSITION SENSOR) Detects EGR valve position sensor signal
47 Not used  
48 TW (ENGINE COOLANT TEMPERATURE SENSOR (ECT) SENSOR 1) Detects ECT sensor 1 signal
49 TA(AFM) (INTAKE AIR TEMPERATURE (IAT) SENSOR) Detects IAT sensor signal
50 FPF (HIGH PRESSURE FUEL PUMP) Detects high pressure fuel pump return signal
51 HPTI (HIGH PRESSURE FUEL PUMP) Detects high pressure fuel pump drive signal