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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 (3.0L Engine)
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PCM Connector For Inputs And Outputs (3.0L Engine)

PCM Connector for Inputs and Outputs 

Connector Index
PCM Connector B (72P)
PCM Connector E (114P)

PCM Connector B (72P) (female terminals) 

GHH483089Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 FI_MAIN_RLY_OUT (POWER SOURCE) Power source for PCM
2 INJ_RLY_OUT (INJECTOR POWER SOURCE) Power source for PCM (injector driver)
3 GND1 (GROUND) Ground for PCM
4 GND2 (GROUND) Ground for PCM
5 GND3 (GROUND) Ground for PCM
6 Not used  
7 +B_VBS/VBU (VOLTAGE BACK UP) Power source for PCM memory
8 ST_CUT_RLY1_CL- (STARTER CUT RELAY 1) Drives starter cut relay 1
9 PF-CAN A_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
10 PF-CAN C_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
11 PF-CAN B_H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal
12 S-NET (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends serial communication signal
13 LIN(FI-ECU) (LOCAL INTERCONNECT NETWORK) Sends and receives communication signal
14 RFC_RLY_CL- (RFC RELAY 1/RFC RELAY 2) Drives RFC relay 1 and RFC relay 2
15 FUEL_PUMP_RLY_CL- (IMMOBILIZER FUEL PUMP RELAY) Drives fuel pump relay

*1: USA and Canada models

Terminal number Terminal name Description
16 DC_STS Outputs DC-DC converter operation signal
17 *1 CCV_GND (CANISTER CHANGE OVER VALVE GROUND) Valve ground for canister change over valve
18 FI_MAIN_RLY_CL- (PGM-FI MAIN RELAY 1) Drives PGM-FI main relay 1
19 ST_CUT_RLY2_CL- (STARTER CUT RELAY 2) Drives starter cut relay 2
20 PF-CAN A_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
21 PF-CAN C_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
22 PF-CAN B_L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal
23 Not used  
24 A/C_MG_CLUTCH_RLY_CL- (A/C COMPRESSOR CLUTCH RELAY CIRCUIT) Drives A/C compressor clutch relay circuit
25 FAN_CONTROL (RFC UNIT CONTROL 1) Drives radiator fan motor/RFC unit 1
26 Not used  
27 Not used  
28 Not used  
29 Not used  
30 Not used  
31 STS (STARTER SWITCH SIGNAL) Detects starter switch signal
32 *1 VMOTOR (EVAP LEAK CHECK MODULE VACUUM PUMP) Drives ELCM vacuum pump
33 Not used  
34 Not used  
35 Not used  
36 Not used  
37 FPC (FUEL PUMP DRIVER) Sends fuel pump driver unit signal
38 FGP (MASS AIR FLOW (MAF) SENSOR) Detects MAF sensor signal
39 Not used  
40 FAN_CONTROL_2 (RFC UNIT CONTROL 2) Drives A/C condenser fan motor/RFC unit 1
41 FI_SUB_RLY_CL- (PGM-FI SUBRELAY CIRCUIT) Drives PGM-FI subrelay circuit
42 STOP_SW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
43 Not used  
44 BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal
45 Not used  
46 SCS (SERVICE CHECK SIGNAL) Detects service check signal
47 Not used  
48 Not used  
49 TA (INTAKE AIR TEMPERATURE (IAT) SENSOR 1) Detects IAT sensor 1 signal
50 Not used  
51 START_DIAG (STARTER CUT RELAY RETURN SIGNAL) Detects starter cut relay signal
52 Not used  
53 Not used  
54 Not used  
55 Not used  
56 SG4 (SENSOR GROUND) Sensor ground
57 VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage
58 VCC6 (SENSOR VOLTAGE) Provides sensor reference voltage
59 VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage
60 SG5 (SENSOR GROUND) Sensor ground
61 SG6 (SENSOR GROUND) Sensor ground
62 IG1_VBSOL2 (IGNITION SIGNAL) Detects ignition signal

*1: USA and Canada models

Terminal number Terminal name Description
63 Not used  
64 P3_SNSR (TURBOCHARGER BOOST SENSOR) Detects turbocharger boost sensor signal
65 Not used  
66 TW2_SENSOR (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) Detects ECT sensor 2 signal
67 *1 PTANK (EVAP LEAK CHECK MODULE PRESSURE SENSOR) Detects ELCM pressure sensor signal
68 PD_SNSR (A/C PRESSURE SENSOR) Detects A/C pressure sensor signal
69 Not used  
70 APS2 (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal
71 VGM (MASS AIR FLOW (MAF) SENSOR - SIDE) Ground for MAF sensor signal
72 APS1 (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal

*1: USA and Canada models

PCM Connector E (114P) (female terminals) 

GHH483090Courtesy of HONDA, U.S.A., INC.
Terminal number Terminal name Description
1 Not used  
2 Not used  
3 Not used  
4 Not used  
5 MTR1 (THROTTLE ACTUATOR) Drives throttle actuator
6 INJH3 (No. 3 INJECTOR +) Drives No. 3 injector
Terminal number Terminal name Description
7 INJH4 (No. 4 INJECTOR +) Drives No. 4 injector
8 INJH5 (No. 5 INJECTOR +) Drives No. 5 injector
9 INJH1 (No. 1 INJECTOR +) Drives No. 1 injector
10 AFHTB1 (REAR AIR FUEL RATIO (REAR A/F) SENSOR (BANK 1, SENSOR 1) HEATER CONTROL) Drives rear A/F sensor (Bank 1, Sensor 1) heater
11 Not used  
12 Not used  
13 Not used  
14 MTR2 (THROTTLE ACTUATOR) Drives throttle actuator
15 INJL3 (No. 3 INJECTOR -) Drives No. 3 injector
16 INJL4 (No. 4 INJECTOR -) Drives No. 4 injector
17 INJL5 (No. 5 INJECTOR -) Drives No. 5 injector
18 INJL1 (No. 1 INJECTOR -) Drives No. 1 injector
19 AFHTB2 (FRONT AIR FUEL RATIO (FRONT A/F) SENSOR (BANK 2, SENSOR 1) HEATER CONTROL) Drives front A/F sensor (Bank 2, Sensor 1) heater
20 Not used  
21 VTCINB1 (VTC OIL CONTROL SOLENOID VALVE A (BANK 1)) Drives VTC oil control solenoid valve A (Bank 1)
22 VTCINB2 (VTC OIL CONTROL SOLENOID VALVE A (BANK 2)) Drives VTC oil control solenoid valve A (Bank 2)
23 WGMTR1 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SID) Drives turbocharger wastegate control actuator
24 Not used  
25 INJH6 (No. 6 INJECTOR +) Drives No. 6 injector
26 INJH2 (No. 2 INJECTOR +) Drives No. 2 injector
27 HPUMPH (HIGH PRESSURE FUEL PUMP +) Drives fuel control solenoid (built into high pressure fuel pump)
28 SO2HT (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) HEATER CONTROL) Drives secondary HO2S (Sensor 2) heater
29 Not used  
30 VTCEXB1 (VTC OIL CONTROL SOLENOID VALVE B (BANK 1)) Drives VTC oil control solenoid valve B (Bank 1)
31 VTCEXB2 (VTC OIL CONTROL SOLENOID VALVE B (BANK 2)) Drives VTC oil control solenoid valve B (Bank 2)
32 WGMTR2 (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) Drives turbocharger wastegate control actuator
33 Not used  
34 INJL6 (No. 6 INJECTOR -) Drives No. 6 injector
35 INJL2 (No. 2 INJECTOR -) Drives No. 2 injector
36 HPUMPL (LOW PRESSURE FUEL PUMP -) Drives fuel control solenoid (built into low pressure fuel pump)
37 Not used  
38 Not used  
39 Not used  
40 KSB1 (KNOCK SENSOR 1 (BANK 1)) Detects knock sensor 1 (Bank 1) signal
41 KSB2 (KNOCK SENSOR 2 (BANK 2)) Detects knock sensor 2 (Bank 2) signal
42 Not used  
43 CSS (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil control solenoid
44 Not used  
45 PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) Drives EVAP canister purge valve
46 IGN01 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil
47 IGN02 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
48 IGN03 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil
49 IGN04 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
50 Not used  
51 Not used  
Terminal number Terminal name Description
52 SG1 (SENSOR GROUND) Sensor ground
53 KSSGB1 (KNOCK SENSOR 1 (BANK 1) GROUND) Sensor ground for knock sensor 1 (Bank 1)
54 KSSGB2 (KNOCK SENSOR 2 (BANK 2) GROUND) Sensor ground for knock sensor 2 (Bank 2)
55 Not used  
56 Not used  
57 Not used  
58 ABV (TURBOCHARGER BYPASS CONTROL SOLENOID VALVE) Drives turbocharger bypass control solenoid valve
59 Not used  
60 Not used  
61 IGN05 (No. 5 IGNITION COIL PULSE) Drives No. 5 ignition coil
62 IGN06 (No. 6 IGNITION COIL PULSE) Drives No. 6 ignition coil
63 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage
64 WGL (TURBOCHARGER WASTEGATE CONTROL ACTUATOR POSITION SENSOR) Detects turbocharger wastegate control actuator position sensor signal
65 THL1 (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal
66 SG11 (SENSOR GROUND) Sensor ground
67 IAT12 (INTAKE AIR TEMPERATURE (IAT) SENSOR 2) Detects IAT sensor 2 signal
68 Not used  
69 Not used  
70 Not used  
71 Not used  
72 Not used  
73 SG2 (SENSOR GROUND) Sensor ground
74 VCC7 (SENSOR VOLTAGE) Provides sensor reference voltage
75 VCC8 (SENSOR VOLTAGE) Provides sensor reference voltage
76 VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage
77 VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage
78 Not used  
79 THL2 (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal
80 SG7 (SENSOR GROUND) Sensor ground
81 TW (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1) Detects ECT sensor 1 signal
82 OPSEN (ENGINE OIL PRESSURE SENSOR) Detects engine oil pressure sensor signal
83 SG8 (SENSOR GROUND) Sensor ground
84 Not used  
85 Not used  
86 Not used  
87 SG9 (SENSOR GROUND) Sensor ground
88 VCC9 (SENSOR VOLTAGE) Provides sensor reference voltage
89 SG10 (SENSOR GROUND) Sensor ground
90 SG3 (SENSOR GROUND) Sensor ground
91 POILCS (ROCKER ARM OIL PRESSURE SENSOR) Detects rocker arm oil pressure sensor signal
92 PF (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal
93 Not used  
94 AFCB2 (VIRTUAL GROUND BANK 2) Provides reference voltage for front A/F sensor (Bank 2, Sensor 1)
95 Not used  
96 AFCB1 (VIRTUAL GROUND BANK 1) Provides reference voltage for rear A/F sensor (Bank 1, Sensor 1)
97 VCC11 (SENSOR VOLTAGE) Provides sensor reference voltage
Terminal number Terminal name Description
98 SO2 (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) Detects secondary HO2S (Sensor 2) signal
99 Not used  
100 CAMEXB1 (CAMSHAFT POSITION (CMP) SENSOR B (BANK 1)) Detects CMP sensor B (Bank 1) signal
101 CAMEXB2 (CAMSHAFT POSITION (CMP) SENSOR B (BANK 2)) Detects CMP sensor B (Bank 2) signal
102 CRKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal
103 Not used  
104 Not used  
105 PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal
106 Not used  
107 AFVB2 (VS CELL+ BANK 2) Detects front A/F sensor (Bank 2, Sensor 1) VS cell signal
108 Not used  
109 AFVB1 (VS CELL+ BANK 1) Detects rear A/F sensor (Bank 1, Sensor 1) VS cell signal
110 VCC10 (SENSOR VOLTAGE) Provides sensor reference voltage
111 SO2SG (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2) SENSOR GROUND) Sensor ground for secondary HO2S (Sensor 2)
112 Not used  
113 CAMINB1 (CAMSHAFT POSITION (CMP) SENSOR A (BANK 1)) Detects CMP sensor A (Bank 1) signal
114 CAMINB2 (CAMSHAFT POSITION (CMP) SENSOR A (BANK 2)) Detects CMP sensor A (Bank 2) signal