2007 Acura RLFACTORY OEM SERVICE PROCEDURE

PCM A/T Control System Inputs and Outputs

Fig 1: PCM Connector Terminal Identification
G05495410Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR A (31P) 

PCM CONNECTOR TERMINAL REFERENCE A - (31P)

Terminal number Wire color Terminal name Description Signal
A1 BLK PG2 (POWER GROUND) Ground circuit for PCM circuit Less than 1.0 Vat all times
A2 BLK PG1 (POWER GROUND) Ground circuit for PCM circuit Less than 1.0 V at all times
A3 BRN/YEL LG1 (LOGIC GROUND) Ground circuit for PCM circuit Less than 1.0 Vat all times
A4 YEL/BLK IGP (POWER SOURCE) Power source for PCM circuit With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V
A10 BLK/YEL VB SOL (POWER SOURCE FOR SOLENOID VALVE) Power source for solenoid valves With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V

PCM CONNECTOR B (24P) 

PCM CONNECTOR TERMINAL REFERENCE B - (24P)

Terminal number Wire color Terminal name Description Signal
B3 WHT/RED IMT- (INTAKE MANIFOLD TUNING (IMT) ACTUATOR - SIDE) Ground for IMT actuator With ignition switch ON (II): Battery voltage
B4 WHT/BLU IMT+ (INTAKE MANIFOLD TUNING (IMT) ACTUATOR + SIDE) Drives IMT actuator With ignition switch ON (II): Battery voltage
B5 BLU/RED EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE) Drives EGR valve With EGR operating: Duty controlled
With EGR not operating: About 0 V
B11 WHT/BLK IMTM (INTAKE MANIFOLD TUNING (IMT) ACTUATOR MONITOR) Detects IMT actuator position With engine running: About 5.0 V
With engine speed above 3,800 rpm: About 0 V
B15 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM Less than 1.0 Vat all times
B19 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: Pulses
B23 RED/BLK ATP N (TRANSMISSION RANGE SWITCH N POSITION) Detects transmission range switch N position signal In N: About 0 V
In any position other than N: Battery voltage

PCM CONNECTOR C (22P) 

PCM CONNECTOR TERMINAL REFERENCE C - (22P)

Terminal number Wire color Terminal name Description Signal
C1 BLU/YEL SH A (SHIFT SOLENOID VALVE A) Drives shift solenoid valve A In R, and 2nd and 3rd in D, D3, and M: Battery voltage
In P and N, and 1st in D, D3 and M, 4th, 5th in D and M: About 0 V
C2 GRN/RED SHD (SHIFT SOLENOID VALVE D) Drives shift solenoid valve D In N, in D and D3 during no lock-up condition: About 0 V
In P and R, and D and D3 during lock-up condition: Battery voltage
C3 BLU/YEL ATFT (ATF TEMPERATURE SENSOR) Detects ATF temperature sensor signal With ignition switch ON (II): About 0.2-4.0 V depending on ATF temperature
With ignition switch LOCK (0): About 0 V
C4 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
C5 GRN/RED MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) Detects MAP sensor signal With ignition switch ON (II): Battery voltage
At idle: About 1.0 V (depending on engine speed)
C6 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor voltage With ignition switch ON (II): About 5.0 V
With ignition switch LOCK (0): About 0 V
C7 RED LS A (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A) Drives A/T clutch pressure control solenoid valve A With ignition switch ON (II): Pulses
C8 GRN/WHT SH B (SHIFT SOLENOID VALVE B) Drives shift solenoid valve B In P, R, and N, and 1st and 2nd in D, D3, and M, in 5th in D and M: Battery voltage
In 3rd in D, D3, and M, and 4th in D: About 0 V
C9 BLU/WHT OP3SW (3RD CLUTCH TRANSMISSION FLUID PRESSURE SWITCH) Detects 3rd clutch transmission fluid pressure switch signal With ignition switch ON (II):
  • Without 3rd clutch pressure: About 5.0 V
  • With 3rd clutch pressure: About 0 V
C10 YEL/GRN ATP D (TRANSMISSION RANGE SWITCH D POSITION) Detects transmission range switch D position signal input In D: About 0 V
In any position other than D: Battery voltage
C11 BLU/BLK OP2SW (2ND CLUTCH TRANSMISSION FLUID PRESSURE SWITCH) Detects 2nd clutch transmission fluid pressure switch signal With ignition switch ON (II):
  • Without 2nd clutch pressure: About 5.0 V
  • With 2nd clutch pressure: About 0 V
C12 GRN/YEL SG2 (SENSOR GROUND) Sensor ground Less than 1.0 Vat all times
C13 WHT/BLK EGRP (EXHAUST GAS RECIRCULATION (EGR) VALVE POSITION SENSOR) Detects EGR valve position sensor signal With engine running: About 1.2-3.0 V (depending on EGR valve lift)
C14 YEL/BLU VCC2 (SENSOR VOLTAGE) Provides sensor voltage With ignition switch ON (II): About 5.0 V
With ignition switch LOCK (0): About 0 V
C15 BRN/WHT LS B (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B) Drives A/T clutch pressure control solenoid valve B With ignition switch ON (II): Pulses
C16 GRN SH C (SHIFT SOLENOID VALVE C) Drives shift solenoid valve C In 1st and 3rd in D, D3, and M, and 5th in D and M: Battery voltage
In P, R, and N, and 2nd in D, D3, and M, and 4th in D and M: About 0 V
C18 RED ATP D3 (TRANSMISSION RANGE SWITCH D3) Detects transmission range switch D3 signal input In D3: About 0 V
In any position other than D3: Battery voltage
Fig 2: PCM Connector Terminal Identification
G05495411Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR C (22P) 

PCM CONNECTOR TERMINAL REFERENCE C - (22P)

Terminal number Wire color Terminal name Description Signal
C19 BLU/YEL ATP FWD (TRANSMISSION RANGE SWITCH D AND D3) Detects transmission range switch D and D3 signal input In D and D3: About 0 V
In any position other than D and D3: Battery voltage
C20 BLU/YEL OP4SW (4TH CLUTCH TRANSMISSION FLUID PRESSURE SWITCH) Detects 4th clutch transmission fluid pressure switch signal With ignition switch ON (II):
  • Without 4th clutch pressure: About 5.0 V
  • With 4th clutch pressure: About 0 V
C21 RED/WHT ATP RVS (TRANSMISSION RANGE SWITCH R POSITION) Detects transmission range switch P, R, and N position signal In P, R, and N: About 0 V
In any position other than P, R, and N: Battery voltage
C22 GRN/RED LS C (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C) Drives A/T clutch pressure control solenoid valve C With ignition switch ON (II): Pulses

PCM CONNECTOR D (17P) 

PCM CONNECTOR TERMINAL REFERENCE D - (17P)

Terminal number Wire color Terminal name Description Signal
D6 YEL IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V
D8 RED NM (INPUT SHAFT (MAINSHAFT) SPEED SENSOR) Detects input shaft (mainshaft) speed sensor signal With ignition switch ON (II): About 0 V or about 5.0 V
With engine running in N: About 2.5 V
D12 ORN VB SOL2 (POWER SOURCE FOR SOLENOID VALVE) Power source for solenoid valves With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V
D13 GRN ATP P (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
D14 LT BLU P PIN (PARK PIN SWITCH) Detects park pin switch signal With ignition switch ON (II) in P: Battery voltage
With ignition switch ON (II) in other than P: About 0 V

PCM CONNECTOR D (17P) 

PCM CONNECTOR TERMINAL REFERENCE D - (17P)

Terminal number Wire color Terminal name Description Signal
D15 PUR SDNP (PADDLE SHIFTER -(DOWNSHIFT SWITCH)) Detects paddle shifter - (downshift switch) signal In M, paddle shifter - (downshift switch) pressed: About 0.V
In M, paddle shifter - (downshift switch) released: Battery voltage
D16 PUR ATP R (TRANSMISSION RANGE SWITCH R POSITION) Detects transmission range switch R position signal In R: About 0 V
In any position other than R: Battery voltage
D17 BLU SUP P (PADDLE SHIFTER + (UPSHIFT SWITCH)) Detects paddle shifter + (upshift switch) signal In M, paddle shifter + (upshift switch) pressed: About 0 V
In M, paddle shifter + (upshift switch) released: Battery voltage

PCM CONNECTOR E (31P) 

PCM CONNECTOR TERMINAL REFERENCE E - (31P)

Terminal number Wire color Terminal name Description Signal
E8 LT GRN BK SW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: About 0 V
With brake pedal pressed: Battery voltage
E13 GRN SDN (DOWNSHIFT SWITCH) Detects downshift switch signal In M and shift lever pushed toward downshift position: About 0 V
In M and shift lever in neutral position: Battery voltage
EH RED K-LINE Sends and receives HDS signal With ignition switch ON (II): Pulses or battery voltage
E15 WHT CAN H (CAN COMMUNICATION SIGNAL HIGH) Sends communication signal With ignition switch ON (II): Pulses
E16 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With service check signal shorted with the HDS: About 0 V
With service check signal opened: About 5.0 V
E19 BLU SUP (UPSHIFT SWITCH) Detects upshift switch signal In M and shift lever pushed toward upshift position: About 0 V
In M and shift lever in neutral position: Battery voltage
E21 LT GRN STRLY (STARTER CUT RELAY) Drives starter cut relay 2 (ST CUT) With ignition switch ON (II): About 0 V
E22 PNK SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: About 0 V
E26 BLK CAN L (CAN COMMUNICATION SIGNAL LOW) Sends communication signal With ignition switch ON (II): Pulses
E30 PUR SMODE (SEQUENTIAL SPORT SHIFT MODE) Detects sequential sports shift mode switch signal In M: About 0 V
In other than M: Battery voltage
E31 GRN MET INH (METER DISPLAY INHIBIT SIGNAL) Sends A/T shift position inhibit signal With ignition switch ON (II): About 10.0 V
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