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PCM Inputs and Outputs at Connector B (TRIANGLE) (44P)

Fig 1: Identifying PCM Connector B Terminals
G04545848Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is 12 V.
TERMINALS DESCRIPTION CHART

Terminal number Wire color Terminal name Description Signal
1 BLK PG2 (POWER GROUND) Ground circuit for PCM circuit Less than 1.0 V at all times
2 BLK/YEL VBSOL (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valve With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V
3 YEL/BLK IGP (POWER SOURCE) Power source for PCM circuit With ignition switch switch ON (II): battery voltage
4 BRN INJ1 (No. 1 INJECTOR) Drives No. 1 injector At idle: duty controlled
With ignition switch ON (II): battery voltage
5 BLK/RED INJ5 (No. 5 INJECTOR) Drives No. 5 injector
6 YEL INJ4 (No. 4 INJECTOR) Drives No. 4 injector
7 BLU INJ3 (No. 3 INJECTOR) Drives No. 3 injector
8 RED INJ2 (No. 2 INJECTOR) Drives No. 2 injector
9 WHT/BLU INJ6 (No. 6 INJECTOR) Drives No. 6 injector
10 BLK/RED IGPLS5 (No. 5 IGNITION COIL PULSE) Drives No. 5 ignition coil With ignition switch ON (II): 0 V
With engine running: pulses
11 BRN/WHT IGPLS6 (No. 6 IGNITION COIL PULSE) Drives No. 6 ignition coil
12 RED/BLU TPSB (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal With throttle fully open: about 4.1 V
With throttle fully closed: about 1.7 V
13 BLU VSB1 (VS CELL+BANK1) Detects the rear A/F sensor (Bank 1, sensor 1) VS CELL signal With engine running: 3.4-4.8 V
14 RED/BLU VSB2 (VS CELL+ BANK 2) Detects front A/F sensor (Bank 2, sensor 1) VS CELL signal With fully warmed up engine running: 3.4-4.8 V
15 GRN SHO2SB1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S) BANK 1, SENSOR 2) Detects rear secondary HO2S (Bank 1, sensor 2) signal With throttle fully opened from idle with fully warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V
16 WHT SHO2SB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S) BANK 2, SENSOR 2) Detects front secondary HO2S (Bank 2, sensor 2) signal With throttle fully opened from idle with fully warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V
17 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
18 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor voltage Ignition switch ON: about 5 V
19 BLU VCC5 (SENSOR VOLTAGE) Provides sensor voltage Ignition switch ON (II): about 5 V
20 WHT/BLU IGPLS3 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil With ignition switch ON (II): 0 V
With engine running: pulses
21 BRN IGPLS4 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
22 RED/WHT VCENTB2 (VIRTUAL GROUND BANK 2) Reference voltage supply for front A/F sensor (Bank 2, sensor 1) With fully warmed up engine at idle: 3.4-4.8 V
23 BLU/WHT VTPSW (VTEC PRESSURE SWITCH) Detects VTEC oil pressure switch signal With engine at low speed: about 0 V
With engine at high speed: battery voltage
24 BLU CKPA (CRANKSHAFT POSITION (CKP) SENSOR A) Detects CKP sensor A signal With engine running: pulses
25 BRN/WHT LSB (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B) Drives A/T clutch pressure control solenoid valve B With the ignition switch ON (II): pulsing signal
26 YEL/GRN IGPLS1 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil With ignition switch ON (II): 0 V
With engine running: pulses
27 BLU/RED IGPLS2 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil With ignition switch ON (II): 0 V
With engine running: pulses
28 GRN IPB1 (IP CELL+BANK1) Detects rear A/F sensor (Bank 1, sensor 1) pump cell With engine running: 2.0-5.6 V
29 GRN/RED IPB2 (IP CELL+BANK 2) Detects front A/F sensor (Bank 2, sensor 1) pump cell With engine running: 2.0-5.6 V
30 GRN/RED MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal With ignition switch ON (II): about 3 V
At idle: about 1.0 V (depending on engine speed)
32 YEL CMP (CAMSHAFT POSITION (CMP) SENSOR) Detects CMP sensor signal With engine running: pulses
33 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
34 GRN SG5 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
35 GRN/RED LSC (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C) Drives A/T clutch pressure control solenoid valve C With ignition switch ON (II): pulsing signal
36 BLK PG1 (POWER GROUND) Ground circuit for PCM circuit Less than 1.0 V at all times
37 RED/WHT IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): battery voltage
38 RED VCENTB1 (VIRTUAL GROUND BANK 1) Reference voltage supply for rear A/F sensor (Bank 1, sensor 1) With fully warmed up engine at idle: 3.4-3.8 V
39 RED NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR) Detects input shaft (mainshaft) speed sensor signals With ignition switch ON (II): 0 V or about 5 V
With engine at idling in N position: about 2.5 V
40 BLU NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed sensor signals With ignition switch ON (II) and front wheels rotated by hand: pulses
41 BLU/RED CKPB (CRANKSHAFT POSITION (CKP) SENSOR B) Detects CKP sensor B signal With engine running: pulses
42 WHT/BLU ALTL (ALTERNATOR L SIGNAL) Detects alternator L signal With ignition switch ON (II): about 0 V
With engine running: battery voltage
43 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM circuit Less than 1.0 V at all times
44 YEL LC (TORQUE CONVERTER CLUTCH (TCC) SOLENOID) Drives TCC solenoid valve With lock-up ON: battery voltage
With lock-up OFF: 0 V