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PCM Inputs and Outputs at Connector B (Δ) (49P)

Fig 1: Identifying PCM Inputs And Outputs Connector
G05484918Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is about 12 V.
VOLTAGE REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
1 BLK PG2 (POWER GROUND) Ground circuit for PCM circuit Less than 0.5 V at all times
2 BLK/YEL VBSOL1 (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valve With ignition switch ON (II): battery voltage
3 YEL/BLK IGP (POWER SOURCE) Power source for PCM circuit With ignition 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 BRN/WHT LSB (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B) Drives A/T clutch pressure control solenoid valve B With ignition switch ON (II): current controlled


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484919Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is about 12 V.
VOLTAGE REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
11 BLK/RED IGPLS5 (No. 5 IGNITION COIL PULSE) Drives No. 5 ignition coil With ignition switch ON (II): about 0 V
With engine running: pulses
12 BRN/WHT IGPLS6 (No. 6 IGNITION COIL PULSE) Drives No. 6 ignition coil
13 BLU VSB1 (VS CELL+ BANK 1) Detects the rear A/F sensor (BANK 1, sensor 1) VS CELL signal With engine running: about 3.4 - 4.8 V
14 RED/BLU VSB2 (VSCELL + BANK2) Detects front A/F sensor (BANK 1, sensor 1) VS CELL signal With fully warmed up engine running: about 3.4 - 4.8 V
15 RED VCENTB1 (VIRTUAL GROUND BANK 1) Reference voltage supply for rear A/F sensor (BANK 1, sensor 1) With fully warmed up engine running: about 3.4 - 3.8 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


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484920Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is about 12 V.
VOLTAGE REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
18 BLU VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
19 WHT/BLK IMTM (INTAKE MANIFOLD TUNING (IMT) VALVE MONITOR) Detects IMT valve position With ignition switch ON (II): about 0 V
With engine speed above 3,800 rpm: about 5.0 V
20 BLU/WHT VTPSW (ROCKER ARM OIL PRESSURE SWITCH) Detects rocker arm oil pressure switch With engine at low speed: about 0 V
With engine at high speed: battery voltage
21 GRN/RED LSC (AT CLUTCH PRESSURE CONTROL SOLENOID VALVE C) Drives A/T clutch pressure control solenoid valve C With ignition switch ON (II): current controlled
22 WHT/BLU IGPLS3 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil With ignition switch ON (II): about 0 V
With engine running: pulses
23 BRN IGPLS4 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
24 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: about 3.4 - 4.8 V


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484921Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is about 12 V.
VOLTAGE REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
25 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
26 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
29 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
30 BLU/RED IGPLS2 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
31 GRN IPB1 (IP CELL + BANK1) Detects rear A/F sensor (Bank 1, sensor 1) pump cell With engine running: about 2.0-5.6 V
32 GRN/RED IPB2 (IP CELL + BANK2) Detects front A/F sensor (Bank 2, sensor 1) pump cell With engine running: about 2.0-5.6 V
33 GRN SG5 (SENSOR GROUND) Sensor ground Less than 0.5 V at all times
34 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 0.5 V at all times
35 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)


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484922Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE: Standard battery voltage is about 12 V.
VOLTAGE REFERENCE CHART

Terminal number Wire color Terminal name Description Signal
36 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage Ignition switch ON: about 5.0 V
37 RED NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR) Detects input shaft (mainshaft) speed sensor signals With ignition switch ON (II): about 0 V or about 5.0 V
With engine running in N: about 2.5 V
38 BLU NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed sensor signal With ignition switch ON (II) and front wheels rotated by hand: about 0 V or 5.0 V
While driving: pulses
39 GRN/YEL VTS (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil control solenoid At idle: about 0 V
40 BLK PG1 (POWER GROUND) Ground circuit for PCM circuit Less than 0.5 V at all times
41 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM circuit Less than 0.5 V at all times
42 BLK/YEL IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): battery voltage
44 BLU/RED CKPB (CRANKSHAFT POSITION (CKP) SENSOR B) Detects CKP sensor B signal With engine running: pulses
45 BLU CKPA (CRANKSHAFT POSITION (CKP) SENSOR A) Detects CKP sensor A signal With engine running: pulses
46 YEL CMP (CAMSHAFT POSITION (CMP) SENSOR) Detect CMP sensor signal With engine running: pulses
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