LEMON Manuals: Even more car manuals for everyone
Home >> Acura >> 2009 >> TSX Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Automatic Transmission) >> System Description >> Electronic Control System >> PCM Inputs and Outputs

PCM Inputs and Outputs

WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: PCM Connector Terminal Identification
G05491171Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR A (31P) 

PCM CONNECTOR A (31P)

Terminal number Wire color Terminal name Description Signal
A2 YEL/BLK IGP2 (POWER SOURCE) Power source for PCM circuit With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V
A3 YEL/BLK IGP1 (POWER SOURCE) Power source for PCM circuit With ignition switch ON (II): Battery voltage
With ignition switch LOCK (0): About 0 V
A4 BLK PG2 (POWER GROUND) Ground circuit for PCM Less than 1.0 V at all times
A5 BLK PG1 (POWER GROUND) Ground circuit for PCM Less than 1.0 Vat all times
A8 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM Less than 1.0 Vat all times
A9 BRN/YEL LG1 (LOGIC GROUND) Ground circuit for PCM Less than 1.0 Vat all times
A18 BLK/BLU 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
With vehicle moving: About 1.5-3.5 V (pulses)
A20 YEL/BLU VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): About 5.0 V
With ignition switch LOCK (0): About 0 V
A21 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): About 5.0 V
With ignition switch LOCK (0): About 0 V
A23 GRN/YEL SG2 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
A24 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
A25 RED/YEL APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B) Detects APP sensor B signal With ignition switch ON (II) and accelerator pedal fully pressed: About 2.3 V
With ignition switch ON (II) and accelerator pedal released: About 0.2 V
A26 RED/BLU APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A) Detects APP sensor A signal With ignition switch ON (II) and accelerator pedal fully pressed: About 4.5 V
With ignition switch ON (II) and accelerator pedal released: About 0.5 V
A30 GRN/RED MAP (MANIFOLD ABSOLUTE PRESSURE SENSOR) Detects MAP sensor signal With ignition switch ON (II): About 3.0 V
At idle: About 1.5 V (depending on engine speed)
Fig 2: PCM Connector Terminal Identification
G05491171Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR C (22P) 

PCM CONNECTOR C (22P)

Terminal number Wire color Terminal name Description Signal
C1 RED/BLK LS A (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A) Drives A/T clutch pressure control solenoid valve A With ignition switch ON (II): Current controlled
C2 GRN SHC (SHIFT SOLENOID VALVE C) Drives shift solenoid valve C With engine running in N, and D, D3, and M (in 1st, 3rd, and 5th gears): Battery voltage
With engine running in P, R, and D, D3, and M (in 2nd and 4th gears): About 0 V
C3 YEL SHE (SHIFT SOLENOID VALVE E) Drives shift solenoid valve E With engine running in P and R: Battery voltage
With engine running in R (Reverse inhibit in R), N, and D, D3, and M: About 0 V
C4 GRN/WHT SH B (SHIFT SOLENOID VALVE B) Drives shift solenoid valve B With engine running in P, R, N, and D, D3, and M (in 1st and 2nd gears): Battery voltage
With engine running in D, D3, and M (in 3rd, 4th, and 5th gears): About 0 V
C5 GRN/RED SHD (SHIFT SOLENOID VALVE D) Drives shift solenoid valve D With engine running in D, D3, and M (in 2nd and 5th gears): Battery voltage
With engine running in P, R, N, and D, D3, and M (in 1st, 3rd, and 4th gears): About 0 V
C6 BLU/BLK SH A (SHIFT SOLENOID VALVE A) Drives shift solenoid valve A With engine running in R, and D, D3, and M (in 1st, 4th, and 5th gears): Battery voltage
With engine running in P, N, and D, D3, and M (in 2nd and 5th gears): About 0 V
C7 BLU/YEL 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
C9 RED ATP D3 (TRANSMISSION RANGE SWITCH D3) Detects transmission range switch D3 position signal In D3: About 0 V
In any position other than D3: About 5.0 V
C10 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
C11 BLU/YEL P-PIN SW (PARK PIN SWITCH) Detects park pin switch signal With ignition switch ON (II), in P: About 0 V
With ignition switch ON (II), in other than P: About 5.0 V
C12 RED/WHT ATP RVS (TRANSMISSION RANGE SWITCH RVS) Detects transmission range switch RVS signal In R: About 0 V
In any position other than R: About 5.0 V
C13 BLU/RED 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
C14 RED/YEL ATFT (ATF TEMPERATURE SENSOR) Detects ATF temperature sensor signal With ignition switch ON (II): About 0.2-4.8 V (about 1.8 V at operating temperature) (depending on ATF temperature)
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): Current controlled
C17 YEL/GRN ATP D (TRANSMISSION RANGE SWITCH D) Detects transmission range switch D position signal In D: About 0 V
In any position other than D: About 5.0 V
C18 BLU/YEL ATP FWD (TRANSMISSION RANGE SWITCH FWD) Detects transmission range switch FWD signal In D and D3: About 0 V
In any position other than D and D3: About 5.0 V
C19 WHT/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 idling in N: About 1.5-3.5 V (pulses)
C20 RED/BLK ATP N (TRANSMISSION RANGE SWITCH N) Detects transmission range switch N position signal In N: About 0 V
In any position other than N: About 5.0 V
Fig 3: PCM Connector Terminal Identification
G05491171Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR D (17P) 

PCM CONNECTOR D (17P)

Terminal number Wire color Terminal name Description Signal
D2 BRN S-MODE (SEQUENTIAL SHIFT MODE) Detects transmission gear selection switch S mode switch signal In M: About 0 V
In any position other than M: About 5.0 V
D3 WHT/BLU(1) WHT(2) S-UP (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 neutral position: About 5.0 V
D5 WHT ATP R (TRANSMISSION RANGE SWITCH R) Detects transmission range switch R position signal In R: About 0 V
In any position other than R: About 5.0 V
D6 BLU/BLK(1) BLU(2) ATP P (TRANSMISSION RANGE SWITCH P) Detects transmission range switch P position signal In P: About 0 V
In any position other than P: About 5.0 V
D9 ORN S-DN (DOWNSHIFT SWITCH) 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 neutral position: About 5.0 V
D10 LT GRN MET INH (METER DISPLAY INHIBIT SIGNAL) Sends inhibit signal With ignition switch ON (II): Battery voltage
(1) '04-05 models
(2) '06-08 models
Fig 4: PCM Connector Terminal Identification
G05491171Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR E (31P) 

PCM CONNECTOR E (31P)

Terminal number Wire color Terminal name Description Signal
E2 YEL/BLK(1) YEL(2) SLS (SHIFT LOCK SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal pressed, and accelerator released: About 0 V
E7 RED/YEL(1) YEL(2) MRLY (PGM-FIMAIN RELAY) Drives PGM-FI main relay 1 (Fl MAIN) Power source for DTC memory With ignition switch ON (II): About 0 V
With ignition switch LOCK (0): Battery voltage
E9 BLK/YEL IG1 (IGNITION SWITCH) Detects ignition switch signal With ignition switch ON (II): Battery voltage
E11 WHT CAN H (CAN COMMUNICATION SIGNAL HIGH) Sends and receives communication signal With ignition switch ON (II): About 2.5 V (pulses)
E22 WHT/BLK BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: About 0 V
With brake pedal pressed: Battery voltage
E23 BLU(3) K-LINE Sends and receives HDS signal With ignition switch ON (II): Battery voltage
E24 RED CAN L (CAN COMMUNICATION SIGNAL LOW) Sends and receives communication signal With ignition switch ON (II): About 2.5 V (pulses)
E29 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With the service check signal shorted using HDS: About 0 V
With the service check signal open: About 5.0 V
(1) '04-05 models
(2) '06-08 models
(3) '04-06 models
scientia non olet · About LEMON Manuals