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Home >> Acura >> 2021 >> TLX Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Mechanical And Engine Control System - Service, Testing And Troubleshooting (1 Of 2) >> Connector View >> PCM Connector For Inputs And Outputs (2.0L Engine)
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PCM Connector For Inputs And Outputs (2.0L Engine)

PCM Connector for Inputs and Outputs 

Connector Index
PCM Connector A (50P)
PCM Connector E (80P)

PCM Connector A (50P) (female terminals) 

GHH560810Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 INJ_RLY_OUT (INJECTOR POWER SOURCE) Power source for PCM (injector driver)
2 INJ_RLY_OUT (INJECTOR POWER SOURCE) Power source for PCM (injector driver)
3 VBACT (TURBOCHARGER WASTEGATE CONTROL ACTUATOR POWER SOURCE) Power source for PCM (turbocharger wastegate control actuator)
4 SO2HT (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) HEATER CONTROL) Drives secondary HO2S (Sensor 2) heater
5 FI_MAIN_RLY_CL- (PGM-FI MAIN RELAY 1) Drives PGM-FI main relay 1, injector relay, ignition coil relay circuit
6 *1 VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) Drives EVAP canister vent shut valve
7 +B_VBS/VBU (VOLTAGE BACK UP) Power source for PCM memory
8 FI_MAIN_RLY_OUT (POWER SOURCE) Power source for PCM
9 Not used  
10 LIN(FI-ECU) (LOCAL INTERCONNECT NETWORK) Sends and receives communication signal
11 FUEL_PUMP_RLY_CL- (IMMOBILIZER FUEL PUMP RELAY) Drives fuel pump relay
12 Not used  
13 GND (GROUND) Ground for PCM
14 DC_STS Outputs DC-DC converter operation signal
15 ST_CUT_RLY1_CL- (STARTER CUT RELAY 1) Drives starter cut relay 1

*1: USA and Canada models

Terminal number Terminal name Description
16 DBW_RLY_OUT (POWER SOURCE) Power source for PCM
17 FAN_LO_SIGNAL (RADIATOR FAN RELAY) Drives radiator fan relay
18 FAN_HI_SIGNAL (A/C CONDENSER FAN RELAY/FAN CONTROL RELAY) Drives A/C condenser fan relay and fan control relay
19 START_DIAG (STARTER CUT RELAY RETURN SIGNAL) Detects starter cut relay signal
20 PF-CAN C_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
21 PF-CAN C_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
22 FPC (FUEL PUMP DRIVER) Sends fuel pump driver unit signal
23 ST_CUT_RLY2_CL- (STARTER CUT RELAY 2) Drives starter cut relay 2
24 Not used  
25 DBW_RLY_CL- (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) Drives ETCS control relay
26 STOP_SW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
27 SCS (SERVICE CHECK SIGNAL) Detects service check signal
28 STS (STARTER SWITCH SIGNAL) Detects starter switch signal
29 Not used  
30 Not used  
31 Not used  
32 APS1 (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal
33 PD_SNSR (A/C PRESSURE SENSOR) Detects A/C pressure sensor signal
34 APS2 (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal
35 Not used  
36 PF-CAN A_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
37 PF-CAN A_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
38 PF-CAN B_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
39 PF-CAN B_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
40 S-NET (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends serial communication signal
41 Not used  
42 *1 PTANK (FUEL TANK PRESSURE (FTP) SENSOR) Detects FTP sensor signal
43 SG5 (SENSOR GROUND) Sensor ground
44 VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage
45 VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage
46 SG4 (SENSOR GROUND) Sensor ground
47 SO2 (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) Detects secondary HO2S (Sensor 2) signal
48 SO2_SG (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) SENSOR GROUND) Sensor ground for secondary HO2S (Sensor 2)
49 BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
50 Not used  

*1: USA and Canada models

PCM Connector E (80P) (female terminals) 

GHH560811Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 HPUMP H (HIGH PRESSURE FUEL PUMP +) Drives fuel control solenoid (built into high pressure fuel pump)
2 INJH4_65V (No. 4 INJECTOR +) Drives No. 4 injector
3 INJL1_65V (No. 1 INJECTOR -) Drives No. 1 injector
4 INJL3_65V (No. 3 INJECTOR -) Drives No. 3 injector
5 INJH2_65V (No. 2 INJECTOR +) Drives No. 2 injector
6 INJH3_65V (No. 3 INJECTOR +) Drives No. 3 injector
7 GND5(INJ_GND1) (INJECTOR GROUND) Ground for PCM (injector driver)
8 GND6(INJ_GND2) (INJECTOR GROUND) Ground for PCM (injector driver)
9 Not used  
10 Not used  
11 Not used  
12 Not used  
13 AFHT_N (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) HEATER CONTROL) Drives A/F sensor (Sensor 1) heater
14 HPUMP L (HIGH PRESSURE FUEL PUMP -) Drives fuel control solenoid (built into high pressure fuel pump)
15 INJH1_65V (No. 1 INJECTOR +) Drives No. 1 injector
16 INJL4_65V (No. 4 INJECTOR -) Drives No. 4 injector
17 INJL2_65V (No. 2 INJECTOR -) Drives No. 2 injector
18 Not used  
19 Not used  
20 Not used  
Terminal number Terminal name Description
21 Not used  
22 GND4 (GROUND) Ground for PCM
23 GND3 (GROUND) Ground for PCM
24 GND2 (GROUND) Ground for PCM
25 WGMTR2 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) Drives turbocharger wastegate control actuator
26 WGMTR1 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SIDE) Drives turbocharger wastegate control actuator
27 MTR1 (THROTTLE ACTUATOR) Drives throttle actuator
28 MTR2 (THROTTLE ACTUATOR) Drives throttle actuator
29 Not used  
30 Not used  
31 ACC (A/C COMPRESSOR CLUTCH RELAY CIRCUIT) Drives A/C compressor clutch relay circuit
32 CAM_EX (CAMSHAFT POSITION (CMP) SENSOR B) Detects CMP sensor B signal
33 Not used  
34 KSGND (KNOCK SENSOR GROUND) Sensor ground for knock sensor
35 KS (KNOCK SENSOR) Detects knock sensor signal
36 IG1 (IGNITION SIGNAL) Detects ignition signal
37 IGN01 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil
38 IGN02 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
39 IGN03 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil
40 IGN04 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
41 Not used  
42 Not used  
43 TD_CAM (CAMSHAFT POSITION (CMP) SENSOR A) Detects CMP sensor A signal
44 CRKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal
45 SG6 (SENSOR GROUND) Sensor ground
46 VTC(EX) (VTC OIL CONTROL SOLENOID VALVE B) Drives VTC oil control solenoid valve B
47 Not used  
48 IP (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) IP CELL) Detects A/F sensor (Sensor 1) pump cell
49 Not used  
50 THL1 (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal
51 THL2 (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal
52 TW (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1) Detects ECT sensor 1 signal
53 TA (INTAKE AIR TEMPERATURE (IAT) SENSOR 1) Detects IAT sensor 1 signal
54 TW2 (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) Detects ECT sensor 2 signal
55 INTA (INTAKE AIR TEMPERATURE (IAT) SENSOR 2) Detects IAT sensor 2 signal
56 PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal
57 P3 (TURBOCHARGER BOOST SENSOR) Detects turbocharger boost sensor signal
58 ENGOPSW (ENGINE OIL PRESSURE SWITCH) Detects engine oil pressure switch signal
59 P-OIL (ROCKER ARM OIL PRESSURE SENSOR) Detects rocker arm oil pressure sensor signal
60 WGL (TURBOCHARGER WASTEGATE CONTROL ACTUATOR POSITION SENSOR) Detects turbocharger wastegate control actuator position sensor signal
61 FGP (MASS AIR FLOW (MAF) SENSOR) Detects MAF sensor signal
62 Not used  
63 VCC6 (SENSOR VOLTAGE) Provides sensor reference voltage
64 VTC (VTC OIL CONTROL SOLENOID VALVE A) Drives VTC oil control solenoid valve A
65 VTS2 (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil control solenoid
66 Not used  
Terminal number Terminal name Description
67 Not used  
68 Not used  
69 Not used  
70 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage
71 SG1 (SENSOR GROUND) Sensor ground
72 PF (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal
73 VS (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) VS CELL) Detects A/F sensor (Sensor 1) VS cell
74 VCENT (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) VIRTUAL GROUND) Provides reference voltage for A/F sensor (Sensor 1)
75 VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage
76 SG3 (SENSOR GROUND) Sensor ground
77 VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage
78 SG2 (SENSOR GROUND) Sensor ground
79 ABV (TURBOCHARGER BYPASS CONTROL SOLENOID VALVE) Drives turbocharger bypass control solenoid valve
80 PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) Drives EVAP canister purge valve