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PCM Inputs and Outputs at Connector A (□) (49P)

Fig 1: Identifying PCM Inputs And Outputs Connector
G05484912Courtesy 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 WHT VBSOL2 (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valve With ignition switch ON (II): battery voltage
2 PNK SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in the P position, brake pedal pressed, and accelerator released: about 0 V
3 LTGRN STRLY (STARTER RELAY) Drives starter cut relay 2 With ignition switch ON (II): about 0 V
4 WHT FANL (RADIATOR FAN CONTROL) Drives A/C condenser fan relay With condenser fan running: about 0 V
With condenser fan stopped: battery voltage
5 PUR FANH (RADIATOR FAN CONTROL) Drives radiator fan relay With radiator fan running: about 0 V
With radiator fan stopped: battery voltage
6 GRN MRLY (PGM-FI MAIN RELAY 1) Drives PGM-FI main relay 1 power source for the DTC memory) With ignition switch ON (II): about 0 V
With ignition switch OFF: battery voltage
7 BRN BKSWNC (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With ignition switch ON (II) and brake pedal released: battery voltage
With ignition switch ON (II) and brake pedal pressed: about 0 V
8 LTGRN BKSW (BREAK PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: about 0 V
With brake pedal pressed: battery voltage


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484913Courtesy 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
9 BLK VG - (MASS AIR FLOW (MAF) SENSOR - SIDE) Ground for MAF sensor signal  
10 ORN ELD (ELECTRICAL LOAD DETECTOR (ELD)) Detects ELD signal With ignition switch ON (II): about 0.1 - 4.8 V (depending on electrical load)
11 BRN IMOFPR (IMMOBILIZER FUEL PUMP RELAY) Drives PGM-FI main relay 2 About 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage
With the engine running: about 0 V
12 BLU MCS (ENGINE MOUNT CONTROL SOLENOID VALVE) Drives engine mount control solenoid valve At idle: about 0 V
About idle: battery voltage
13 RED ACC (A/C COMPRESSOR CLUTCH RELAY) Drives A/C compressor clutch relay With compressor ON: about 0 V
With compressor OFF: battery voltage
16 GRN ATPP (TRANSMISSION RANGE SWITCH P POSITION) Detects transmission range switch P position signal In P: about 0 V
In any position other than P: battery voltage
18 PUR APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal With ignition switch ON (II) and accelerator pedal pressed: about 4.7 V
With ignition switch ON (II) and accelerator pedal released: about 1.0 V


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484914Courtesy 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
19 LTGRN APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal With ignition switch ON (II) and accelerator pedal pressed: about 2.3 V
With ignition switch ON (II) and accelerator pedal released: about 0.5 V
20 RED VG + (MASS AIR FLOW (MAF) SENSOR + SIDE) Detects MAF sensor signal At idle: about 1.1 - 1.6 V (between VG + terminal and VG - terminal)
21 PUR ECT2 (ENGINE COOLANT TEMPERATURE SENSOR (ECT) SENSOR 2) Detects ECT sensor 2 signal With ignition switch ON (II): about 0.1 - 4.8 V (depending on engine coolant temperature)
22 LTGRN VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) Drives EVAP canister vent shut valve With ignition switch ON (II): battery voltage
24 RED VCC3 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
25 ORN VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
26 WHT SG3 (SENSOR GROUND) Sensor around Less than 0.5 V at all times
27 GRN SG4 (SENSOR GROUND) Sensor ground Less than 0.5 V at all times


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484915Courtesy 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
28 PNK STRLD (STARTER SIGNAL LOAD) Detects starter cut relay 2 With starter ON: battery voltage
29 BLU ETCSRLY (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) Drives electronic throttle control system (ETCS) control relay With ignition switch ON (II): about 0 V
30 BLU VSSOUT (VEHICLE SPEED SIGNAL OUTPUT) Sends output shaft (countershaft) speed sensor signal Depending on vehicle speed: pulses
31 LT BLU STS (STARTER SWITCH SIGNAL) Detects starter switch signal With starter switch ON (II): battery voltage With starter switch OFF: about 0 V
32 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With the service check signal shorted with the HDS: about 0 V
With the service check signal opened: about 5.0 V
36 BLU SUP (TRANSMISSION GEAR SELECTION SWITCH UPSHIFT SWITCH) Detects transmission gear selection switch upshift switch signal In M and shift lever pushed toward upshift position: about 0 V
In M and shift lever in N: battery voltage
37 GRN SDN (TRANSMISSION GEAR SELECTION SWITCH DOWNSHIFT SWITH) Detects transmission gear selection switch downshift switch signal In M and shift lever pushed toward downshift position: about 0 V
In M and shift lever in N: battery voltage


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484916Courtesy 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
38 PNK PSPSW (POWER STEERING PRESSURE SWITCH SIGNAL) Detects PSP switch signal At idle with steering wheel in straight ahead position: about 0 V
At idle with steering wheel at full lock: battery voltage
39 LTGRN FTP (FUEL TANK PRESSURE (FTP) SENSOR Detects FTP sensor signal With ignition switch ON (II) and fuel fill cap removed: about 2.5 V
40 RED SUBRLY(PGM-FI SUBRELAY) Drives PGM-FI subrelay With ignition switch ON (II): about 0 V
41 BRN LG3 (LOGIC GROUND) Ground circuit for the immobilizer unit Less than 0.5 V at all time
42 LT BLU FPCD (FUEL PUMP CONTROL MODULE DIAGNOSIS) Detects fuel pump control diagnosis With ignition switch ON (II): about 5.0 V
At idle: about 10.0 V
43 PNK FPC (FUEL PUMP CONTROL) Detects fuel pump control signal With ignition switch ON: pulses
With ignition switch OFF: about 0 V
44 GRY WEN (WRITE ENABLE SIGNAL) Detects write enable signal With ignition switch ON (II): about 0 V
46 LTGRN S-NET5V (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends serial communication signal With ignition switch ON (II): pulses
With ignition switch OFF: about 5.0 V


Fig 1: Identifying PCM Inputs And Outputs Connector
G05484917Courtesy 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
47 PUR SMODE (SEQUENTIAL SPORTSHIFT MODE) Detects sequential sportshift mode switch signal In M: about 0 V
In any position other than M: battery voltage
48 WHT CANH (CAN COMMUNICATION SIGNAL HIGH) Sends communication signal With ignition switch ON (II): pulses
49 RED CANL(CAN COMMUNICATION SIGNAL LOW) Sends communication signal With ignition switch ON (II): pulses
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