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

Fig 1: Identifying ECM/PCM Inputs And Outputs At ECM/PCM Connector B (Δ) (49P) Terminals
G08069268Courtesy of AMERICAN HONDA MOTOR CO., INC.
Terminal number Wire color Terminal name Description Signal
1 BLK PG2 (POWER GROUND) Ground circuit for ECM/PCM Less than 0.2 V at all times
2 BLK/YEL VBSOL (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valves With ignition switch ON (II)/vehicle in ON mode: battery voltage
3 YEL/BLK IGP (POWER SOURCE) Power source for ECM/PCM circuit With ignition switch ON (II)/vehicle in ON mode: battery voltage
4 BRN INJ1 (No. 1 INJECTOR) Drives No. 1 injector At idle: duty controlled With ignition switch ON (II)/vehicle in ON mode: 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(1) 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)/vehicle in ON mode: current controlled
(1) A/T


Fig 1: Identifying ECM/PCM Inputs And Outputs At ECM/PCM Connector B (Δ) (49P) Terminals
G08069269Courtesy of AMERICAN HONDA MOTOR CO., INC.
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)/vehicle in ON mode: 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 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 (WHT/RED)(1) 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 RED VCENTB1 (VIRTUAL GROUND BANK 1) 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) (BANK 2, SENSOR 2)) Detects front secondary HO2S (Bank 2, 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
17 RED/BLK TPSA (THROTTLE POSITION (TP) SENSOR A) Detects TP sensor A signal With ignition switch ON (II)/vehicle in ON mode and accelerator pedal pressed: about 3.9 V
With ignition switch ON (II)/vehicle in ON mode and accelerator pedal released: about 0.6 V
18 BLU VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II)/vehicle in ON mode: about 5.0 V
(1) A/T


Fig 1: Identifying ECM/PCM Inputs And Outputs At ECM/PCM Connector B (Δ) (49P) Terminals
G08069270Courtesy of AMERICAN HONDA MOTOR CO., INC.
Terminal number Wire color Terminal name Description Signal
19 WHT/BLK IMTM (INTAKE MANIFOLD TUNING (IMT) VALVE MONITOR) Detects IMT valve position With ignition switch ON (II)/vehicle in ON mode: about 5.0 V
With engine speed above 3, 950 RPM (J35Z6 engine) or 4, 000 RPM (J37A4 engine): about 0 V
20 BLU/BLK VTPSW (ROCKER ARM OIL PRESSURE SWITCH) Detects rocker arm oil pressure switch signal At idle: about 0 V
21(1) 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)/vehicle in ON mode: current controlled
22 WHT/BLU IGPLS3 (No. 3 IGNITION COIL PULSE) Drives No. 3 ignition coil With ignition switch ON (II)/vehicle in ON mode: 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 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 throttle fully opened from idle and warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V
(1) A/T


Fig 1: Identifying ECM/PCM Inputs And Outputs At ECM/PCM Connector B (Δ) (49P) Terminals
G08069271Courtesy of AMERICAN HONDA MOTOR CO., INC.
Terminal number Wire color Terminal name Description Signal
26 RED/BLU TPSB (THROTTLE POSITION (TP) SENSOR B) Detects TP sensor B signal With ignition switch ON (II)/vehicle in ON mode and accelerator pedal pressed: about 4.1 V
With ignition switch ON (II)/vehicle in ON mode and accelerator pedal released: about 1.7 V
29 YEL/GRN IGPLS1 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil With ignition switch ON (II)/vehicle in ON mode: 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+ BANK 1) 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+ BANK 2) 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 0.2 V at all times
34 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
35 GRN/RED MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal With ignition switch ON (II)/vehicle in ON mode: about 3.0 V At idle: about 1.0 V (depending on engine speed)
36 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II)/vehicle in ON mode: about 5.0 V
37 RED NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR) Detects input shaft (mainshaft) speed sensor signals With ignition switch ON (II)/vehicle in ON mode: about 0 V or about 5.0 V
With engine running in N: pulses


Fig 1: Identifying ECM/PCM Inputs And Outputs At ECM/PCM Connector B (Δ) (49P) Terminals
G08069272Courtesy of AMERICAN HONDA MOTOR CO., INC.
Terminal number Wire color Terminal name Description Signal
38 BLU NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed sensor signal With ignition switch ON (II)/vehicle in ON mode: about 0 V or about 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 ECM/PCM Less than 0.2 V at all times
41 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for ECM/PCM Less than 0.2 V at all times
42 BLK/YEL IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II)/vehicle in ON mode: battery voltage
43(1) BLK/WHT LSD (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE D) Drives ATT clutch pressure control solenoid valve D With ignition switch ON (II)/vehicle in ON mode: current controlled
44(1) YEL PLA (LINE PRESSURE CONTROL SOLENOID VALVE A) Drive line pressure control solenoid valve A With engine running in 1st, or reverse: about 0 V
With engine running in any gear other than 1st or reverse: battery voltage
45 BLU CKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal With engine running: pulses
46 GRN CMP (CAMSHAFT POSITION (CMP) SENSOR) Detects CMP sensor signal With engine running: pulses
(1) A/T
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