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ECM/PCM Inputs and Outputs at ECM/PCM Connector A (□) (44P)

Fig 1: Identifying ECM/PCM Connector A (44P)
G06949723Courtesy of AMERICAN HONDA MOTOR CO., INC.
CONNECTOR TERMINAL DESCRIPTION

Terminal number Wire color Terminal name Description Signal
1(2) LT GRN VBSOL (POWER SOURCE FOR SOLENOID VALVES) Power source for solenoid valve With ignition switch ON (II): battery voltage
2 GRN MPMON1 (BRAKE BOOSTER PRESSURE MONITOR A) Detects brake booster pressure sensor A signal With ignition switch ON (II): about 3.0 V (with no vacuum in the brake booster)
At idle: about 1.0 V (depending on engine speed)
3 Not used Not used    
4 RED FANL (RADIATOR FAN CONTROL) Drives radiator fan relay With radiator fan running: about 0 V
With radiator fan stopped: battery voltage
5 GRY FANH (RADIATOR FAN CONTROL) Drives A/C condenser fan relay With A/C condenser fan running at high speed: about 0 V
With A/C condenser fan running at low speed or stopped: battery voltage
6 PUR MRLY (PGM-FI MAIN RELAY 1) Drives PGM-FI main relay 1 With ignition switch ON (II): about 0 V
With ignition switch in LOCK (0): battery voltage
7 BLU STS (STARTER SWITCH SIGNAL) Detects starter switch signal With ignition switch in START (III): battery voltage
With ignition switch in any position other than START (III): about 0 V
8 YEL IGP1 (POWER SOURCE 1) Power source for ECM/PCM circuit With ignition switch ON (II): battery voltage
9 PNK SG6 (SENSOR GROUND) Sensor ground Less than 0 2 V at all times
10 LT GRN VSV (EVAPORATIVE EMISSION (EVAP) CANISTER VENT SHUT VALVE) Drives EVAP canister vent shut valve With ignition switch ON (II): battery voltage
11 Not used Not used    
12 LT GRN STC (STARTER CUT RELAY) Drives starter cut relay With ignition switch in START (III) battery voltage
With ignition switch in any position other than START (III): about 0 V
13(1) 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
13(2) BRN BKSWNC (BRAKE PEDAL POSITION SWITCH (IDLE STOP SWITCH)) Detects idle stop 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
14 GRY ACC (A/C COMPRESSOR CLUTCH RELAY) Drives A/C compressor clutch relay With compressor ON: about 0 V
With compressor OFF: battery voltage
15 GRN 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 engine running: about 0 V
16 BLU ACPD (A/C PRESSURE SENSOR) Detects A/C pressure sensor signal With A/C switch ON: about 1.4 - 4.8 V (depending on A/C pressure)
17 YEL 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
18 PUR APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal With ignition switch ON (II) and accelerator pedal pressed: about 2.4 V
With ignition switch ON (II) and accelerator pedal released: about 0.5 V
19 YEL VCC6 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
20 RED ETCSRLY (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY) Drives electronic throttle control system (ETCS) control relay With ignition switch ON (II): about 0 V
21 ORN SUBRLY(PGM-FI SUBRELAY) Drives A/F sensor relay With ignition switch ON (II): about 0 V
22 Not used Not used    
23 PNK ELD (ELECTRICAL LOAD DETECTOR (ELD)) Detects ELD signal With ignition switch ON (II): about 0.1 - 4.8 V (depending on electrical load)
24 LT GRN VCC5 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
25 BRN VCC4 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
26 PUR FTP (FUEL TANK PRESSURE (FTP) SENSOR) Detects FTP sensor signal With ignition switch ON (II) and fuel fill cap removed: about 2.5 V
27(1) PNK RVSLCK (REVERSE LOCKOUT SOLENOID) Drives reverse lockout solenoid Vehicle speed is more than 12.4 mph (20 km/h) about 0 V
Vehicle speed is less than 9.3 mph (15 km/h): battery voltage
27(2) GRY SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: about 0 V
28 LT BLU NEP (ENGINE SPEED PULSE) Outputs engine speed pulse With engine running: pulses
29 BLU VSP (VEHICLE SPEED SIGNAL OUTPUT) Sends vehicle speed signal Depending on vehicle speed: pulses
30(2) YEL SUPP (PADDLE SHIFTER + UPSHIFT SWITCH) Detects paddle shifter + (upshift switch) signal With ignition switch ON (II) and paddle shifter+ (upshift switch) pressed: about 0 V
With ignition switch ON (II) and paddle shifter+ (upshift switch) released, battery voltage
31 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With service check signal shorted using the HDS: about 0 V
With service check signal opened: about 5.0 V
32(1) LT GRN RVSSW (REVERSE SWITCH) Detects back-up light switch (reverse position) signal With ignition switch ON (II) and transmission in R: battery voltage
32(2) LT GRN SDNP (PADDLE SHIFTER - DOWNSHIFT SWITCH) Detects paddle shifter - (downshift switch) signal With ignition switch ON (II) and paddle shifter- (downshift switch) pressed: about 0 V
With ignition switch ON (II) and paddle shifter- (downshift switch) released: battery voltage
33 WHT ECT2 (ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2) Detects ECT sensor 2 signal With ignition switch ON (II): about 0.1-4.8 V (depending on engine coolant temperature)
34 LT BLU SG5 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
35 GRN SG4 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
36 GRN F-CAN H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal With ignition switch ON (II): pulses
37 PNK F-CAN L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal With ignition switch ON (II): pulses
38 WHT IMA-CAN H (CAN COMMUNICATION SIGNAL HIGH) Detects and receives communication signal to motor control module (MCM) With ignition switch ON (II): pulses
39 RED IMA-CAN L (CAN COMMUNICATION SIGNAL LOW) Detects and receives communication signal to motor control module (MCM) With ignition switch ON (II): pulses
40 WHT BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal Brake pedal released: about 0 V
Brake pedal pressed: battery voltage
41(1) LT GRN CRMTCLS (CRUISE CLUTCH PEDAL POSITION SWITCH Detects clutch pedal position switch B signal With ignition switch ON (II) and clutch pedal released: about 0 V
With ignition switch ON (II) and clutch pedal pressed: battery voltage
42(3) ORN WEN (WRITE ENABLE SIGNAL) Detects write enable signal With ignition switch ON (II): about 0 V
43 YEL IGP2 (POWER SOURCE 2) Power source for ECM/PCM circuit With ignition switch ON (II): battery voltage
44 PNK S-NET5V (SERIAL COMMUNICATION FOR IMMOBILIZER) Sends serial communication signal With ignition switch ON (II): pulses
With key removed from ignition switch: 0-5.0 V
(1) M/T
(2) CVT
(3) '11 model