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

Fig 1: Identifying PCM Connector B Terminal Identification
G07361778Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINALS REFERNCE CHART

Terminal number Wire color Terminal name Description Signal
1 BLK PG2 (POWER GROUND) Ground circuit for PCM Less than 0.2 V at all times
2 LT GRN VBSOL (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valves With ignition switch ON (II): battery voltage
3 YEL IGP (POWER SOURCE) Power source for PCM circuit With ignition switch ON (II): battery voltage
4 GRN INJ1 (No. 1 INJECTOR) Drives No. 1 injector At idle: duty controlled
With ignition switch ON (II): battery voltage
5 PNK INJ5 (No. 5 INJECTOR) Drives No. 5 injector
6 GRY 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 LT BLU INJ6 (No. 6 INJECTOR) Drives No. 6 injector
10 PUR 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 2: Identifying PCM Connector B Terminal Identification
G07361779Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINALS REFERNCE CHART

Terminal number Wire color Terminal name Description Signal
11 YEL IGPLS5 (No. 5 IGNITION COIL PULSE) Drives No. 5 ignition coil With ignition switch ON (II): about 0 V
With engine running: pulses
12 TAN IGPLS6 (No. 6 IGNITION COIL PULSE) Drives No. 6 ignition coil
13 BLU VSB1 (VS CELL + BANK1) Detects rear A/F sensor (Bank 1, sensor 1.) VS CELL signal With warmed up engine running: about 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 warmed up engine running: about 3.4-4.8 V
15 LT BLU VCENTB1 (VIRTUAL GROUND BANK 1) Provides reference voltage for rear A/F sensor (Bank 1, sensor 1) With warmed up engine at idle: about 3.4-3.8 V
16 WHT SHO2SB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S(BANK2, SENSOR 2))) Detects front secondary HO2S (Bank 2, sensor 2) signal With the throttle fully opened from idle and warmed up engine: about 0.6 V*
With the throttle quickly closed: below 0.4 V*
*: (between SHO2SB2 terminal and SO2SGB2 terminal)
17 RED TPSA (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal With ignition switch ON (II) and accelerator pedal pressed: about 3.9 V
With ignition switch ON (II) and accelerator pedal released: about 0.9 V
18 PNK VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
Fig 3: Identifying PCM Connector B Terminal Identification
G07361780Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINALS REFERNCE CHART

Terminal number Wire color Terminal name Description Signal
19 LT GRN IMTM (INTAKE MANIFOLD TUNING (IMT) VALVE MONITOR) Detects IMT valve position With ignition switch ON (II): about 5.0 V
With engine speed above 4, 000 RPM: about 0 V
20 GRY VTPSW (ROCKER ARM OIL PRESSURE SWITCH) Detects rocker arm oil pressure switch signal At idle: about 0 V
21 PNK LSC (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C) Drives A/T clutch pressure control solenoid valve C With ignition switch ON (II): current controlled
22 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 LT BLU IGPLS4 (No. 4 IGNITION COIL PULSE) Drives No. 4 ignition coil
24 BRN VCENTB2 (VIRTUAL GROUND BANK 2) Provides reference voltage for front A/F sensor (Bank 2, sensor 1) With warmed up engine at idle: about 3.4-4.8 V
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 the throttle fully opened from idle and warmed up engine: about 0.6 V*
With the throttle quickly closed: below 0.4 V*
*: (between SHO2SB1 terminal and SO2SGB1 terminal)
Fig 4: Identifying PCM Connector B Terminal Identification
G07361781Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINALS REFERNCE CHART

Terminal number Wire color Terminal name Description Signal
26 PUR TPSB (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal With ignition switch ON (II) and accelerator pedal pressed: about 4.1 V
With ignition switch ON (II) and accelerator pedal released: about 1.7 V
29 WHT IGPLS1 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil With ignition switch ON (II): about 0 V
With engine running: pulses
30 PUR IGPLS2 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil
31 GRN IPB1 (IP CELL + BANK 1) Detects rear A/F sensor (Bank 1, sensor 1) pump cell With engine running: about 2.0-5.6 V
32 PUR IPB2 (IP CELL + BANK 2) Detects front A/F sensor (Bank 2, sensor 1) pump cell With engine running: about 2.0-5.6 V
33 GRY SG5 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
34 BLU SG1 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
35 LT GRN 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)
36 GRN VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): 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: pulses
Fig 5: Identifying PCM Connector B (49P) Terminal Identification
G07361782Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINALS REFERNCE CHART

Terminal number Wire color Terminal name Description Signal
38 TAN NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed sensor signal With ignition switch ON (II): about 0 V or about 5.0 V
While driving: pulses
39 BRN 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 Less than 0.2 V at all times
41 BRN LG2 (LOGIC GROUND) Ground circuit for PCM Less than 0.2 V at all times
42 GRY IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): battery voltage
43 TAN LSD (AT CLUTCH PRESSURE CONTROL SOLENOID VALVE D) Drives A/T clutch pressure control solenoid valve D With ignition switch ON (II): current controlled
44 WHT PLA (LINE PRESSURE SOLENOID VALVE A) Drives line pressure solenoid valve A With engine running
  • With low line pressure: battery voltage
  • Without low line pressure: about 0 V
45 BLU CKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal With engine running: pulses
46 GRY CMP (CAMSHAFT POSITION (CMP) SENSOR) Detects CMP sensor signal With engine running: pulses
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