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Home >> Honda >> 2007 >> Civic GX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Fuel System & Emissions System (Supplemental) (GX) >> System Description >> Electronic Control Systems >> PCM Inputs and Outputs at PCM Connector C (◦) (44P)
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PCM Inputs and Outputs at PCM Connector C (◦) (44P)

Fig 1: Identifying PCM Inputs And Outputs At PCM Connector C (◦) (44P)
G06769052Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR PINOUTS DESCRIPTION CHART

Terminal number Wire color Terminal name Description Signal
1 WHT/GRN IG1 ETCS (IGNITION SIGNAL ETCS) Detects ignition signal With ignition switch ON (II): battery voltage
2 BLK PGMETCS (POWER GROUND ETCS) Ground circuit for PCM Less than 0.2 V at all times
3 YEL/GRN ETCSM- (THROTTLE ACTUATOR -SIDE) Ground for throttle actuator With ignition switch ON (II): about 0 V
4 YEL/RED ETCSM+ (THROTTLE ACTUATOR +SIDE) Drives throttle actuator With ignition switch ON (II): about 0 V
5 BRN/BLK INJCNTL1 (No. 1 INJECTOR CONTROL) Drives No. 1 injector With ignition switch ON (II): about 0 V
At idle: duty controlled
6 RED/BLK INJCNTL2 (No. 2 INJECTOR CONTROL) Drives No. 2 injector
7 BLU/BLK INJCNTL3 (No. 3 INJECTOR CONTROL) Drives No. 3 injector
8 YEL/BLK INJCNTL4 (No. 4 INJECTOR CONTROL) Drives No. 4 injector
9 GRN AFSHTC (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) HEATER CONTROL) Drives A/F sensor (sensor 1) heater With ignition switch ON (II): battery voltage
With warmed up engine running: about 0 V
10 BLU/RED PF2 (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal At idle: 2.3-3.0 V (depending on engine speed)
11 GRN/RED MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal With ignition switch ON (II): about 3.0 V
At idle: about 1.0 V (depending on engine speed)
12 GRN VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
13 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
14 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
15 YEL/GRN IGPLS1 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil With ignition switch ON (II): about 0 V
With engine running: pulses
16 BLU/RED IGPLS2 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
17 WHT/BLU IGPLS3 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil
18 BRN IGPLS4 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
20 RED/BLK TPSA (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal With throttle fully open: about 3.9 V
With throttle fully closed: about 0.9 V
21 YEL TPSB (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal With throttle fully open: about 4.2 V
With throttle fully closed: about 1.7 V
22 WHT/BLK POIL (ROCKER ARM OIL PRESSURE SENSOR (ENGINE OIL PRESSURE (EOP) SENSOR)) Detects rocker arm oil pressure sensor (EOP sensor) signal With ignition switch ON (II): about 0.7 V
With ignition switch in START (III): about 0.9 V (momentarily)
27 WHT/RED SHO2S (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) Detects secondary HO2S (sensor 2) signal With throttle fully opened from idle and warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V
29 RED AFS+ (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) +SIDE) Detects A/F sensor (sensor 1) signal  
30 RED/YEL AFS- (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) -SIDE) Detects A/F sensor (sensor 1) signal  
31 WHT/GRN CMP (CAMSHAFT POSITION (CMP) SENSOR) Detects CMP sensor signal With engine running: pulses
32 BLU/WHT CKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal With engine running: pulses
36 BLK/YEL IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): battery voltage
39 BLU SG3 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
40 BRN/YEL LG1 (LOGIC GROUND) Ground circuit for PCM Less than 0.2 V at all times
43 BLK/BLU NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed sensor signals With ignition switch ON (II): about 0 V or about 5.0 V
With vehicle moving: about 2.5 V (pulses)
44 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM Less than 0.2 V at all times