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PCM A/T Control System Inputs and Outputs at PCM connector C ◦ (49P)

WARNING: This page is about a different car, the 2013 Honda Odyssey, 2012 Honda Odyssey, and 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying PCM Connector C (49P)
G06966812Courtesy of AMERICAN HONDA MOTOR CO., INC.
PCM CONNECTOR TERMINAL DESCRIPTION

Terminal Number Wire Color Terminal Name Description Signal
9(1) GRN SHC (SHIFT SOLENOID VALVE C) Drives shift solenoid valve C With engine running in D (in 1st, 3rd, and 5th gears), and L (in 1st gear): battery voltage
With engine running in P, R, N, D (in 2nd and 4th gears), and L (in 2nd gear): about 0 V
9(2) PUR SHD (SHIFT SOLENOID VALVE D) Drives shift solenoid valve D With engine running in N, D and L during lock-up condition: battery voltage
With engine running in P, R, and D during no lock up condition: about 0 V
12 GRN VCC2 (SENSOR VOLTAGE) Provides sensor reference voltage With ignition switch ON (II): about 5.0 V
16 GRY SG2 (SENSOR GROUND) Sensor ground Less than 0.2 V at all times
17(1) LT GRN ATPD (TRANSMISSION RANGE SWITCH D POSITION) Detects transmission range switch D position signal In D: about 0 V In any position other than D: battery voltage
17(2) LT GRN ATPD (TRANSMISSION RANGE SWITCH D POSITION) Detects transmission range switch D position signal In D: about 0 V In any position other than D: about 5.0 V
18(1) YEL ATPFWD (TRANSMISSION RANGE SWITCH FWD) Detects transmission range switch D and L position signals In D and L: about 0 V
In any position other than D and L: about 5.0 V
18(2) YEL ATPFWD (TRANSMISSION RANGE SWITCH FWD) Detects transmission range switch D and L position signals In D and L: about 0 V
In any position other than D and L: battery voltage
19(1) PNK ATPRVS (TRANSMISSION RANGE SWITCH RVS) Detects transmission range switch P, R, and N position signals In P, R, and N: about 0 V
In any position other than P, R, and N: battery voltage
19(2) PNK ATPRVS (TRANSMISSION RANGE SWITCH RVS) Detects transmission range switch P, R, and N position signals In P, R, and N: about 0 V
In any position other than P, R, and N: about 5.0 V
20(1) TAN SHB (SHIFT SOLENOID VALVE B) Drives shift solenoid valve B With engine running in P, R, N, D (in 1st, 2nd, and 5th gears), and L (in 1st and 2nd gears): battery voltage
With engine running in D (in 3rd and 4th gears): about 0 V
20(2) BLU SHA (SHIFT SOLENOID VALVE A) Drives shift solenoid valve A With engine running in D (in 2nd and 3rd gears), L (in 2nd gear), and R: battery voltage
With engine running in P, N, D (in 1st, 4th, and 5th gears), and L (in 1st gear): about 0 V
21 RED LSA (A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE A) Drives A/T clutch pressure control solenoid valve A With ignition switch ON (II): current controlled
25(1) WHT ATPR (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
25(2) WHT ATPR (TRANSMISSION RANGE SWITCH R POSITION) Detects transmission range switch R position signal In R: about 0 V
In any position other than R: more than 5.0 V
26 PUR ATPN (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
27(1) LT GRN OP2SW (TRANSMISSION FLUID PRESSURE SWITCH A (2ND CLUTCH)) Detects transmission fluid pressure switch A (2nd clutch) signal With ignition switch ON (II):
  • Without 2nd clutch pressure: about 5.0 V
  • With 2nd clutch pressure: about 0 V
27(2) LT GRN OP2SW (TRANSMISSION FLUID PRESSURE SWITCH A (2ND CLUTCH)) Detects transmission fluid pressure switch A (2nd clutch) signal With ignition switch ON (II):
  • Without 2nd clutch pressure: battery voltage
  • With 2nd clutch pressure: about 0 V
28(1) BLU SHA (SHIFT SOLENOID VALVE A) Drives shift solenoid valve A With engine running in D (in 2nd and 3rd gears), L (in 2nd gear), and R: battery voltage
With engine running in P, N, D (in 1st, 4th, and 5th gears), and L (in 1st gear): about 0 V
28(2) TAN SHB (SHIFT SOLENOID VALVE B) Drives shift solenoid valve A With engine running in P, R, N, D (in 1st, 2nd, and 5th gears), and L (in 1st and 2nd gears): battery voltage
With engine running in D (in 3rd and 4th gears): about 0 V
33 GRN TATF (ATF TEMPERATURE SENSOR) Detects ATF temperature sensor signal With ignition switch ON (II): about 0.2-4.0 V (about 1.8 V with warmed up engine, depending on ATF temperature)
37(1) BLU OP4SW (TRANSMISSION FLUID PRESSURE SWITCH C (4TH CLUTCH)) Detects transmission fluid pressure switch C (4th clutch) signal With ignition switch ON (II):
  • Without 4th clutch pressure: about 5.0 V
  • With 4th clutch pressure: about 0 V
37(2) BLU OP4SW (TRANSMISSION FLUID PRESSURE SWITCH C (4TH CLUTCH)) Detects transmission fluid pressure switch C (4th clutch) signal With ignition switch ON (II):
  • Without 4th clutch pressure: battery voltage
  • With 4th clutch pressure: about 0 V
38(1) LT BLU OP3SW (TRANSMISSION FLUID PRESSURE SWITCH B (3RD CLUTCH)) Detects transmission fluid pressure switch B (3rd clutch) signal With ignition switch ON (II):
  • Without 3rd clutch pressure: about 5.0 V
  • With 3rd clutch pressure: about 0 V
38(2) LT BLU OP3SW (TRANSMISSION FLUID PRESSURE SWITCH B (3RD CLUTCH)) Detects transmission fluid pressure switch B (3rd clutch) signal With ignition switch ON (II):
  • Without 3rd clutch pressure: battery voltage
  • With 3rd clutch pressure: about 0 V
39(2) GRN SHC (SHIFT SOLENOID VALVE C) Drives shift solenoid valve C With engine running in D (in 1st, 3rd, and 5th gears), and L (in 1st gear): battery voltage
With engine running in P, R, N, D (in 2nd and 4th gears), and L (in 2nd gear): about 0 V
41 BRN LG1 (LOGIC GROUND) Ground circuit for PCM Less than 0.2 V at all times
46(1) RED ATPL (TRANSMISSION RANGE SWITCH L POSITION) Detects transmission range switch L position signal In L: about 0 V
In any position other than L: battery voltage
46(2) RED ATPL (TRANSMISSION RANGE SWITCH L POSITION) Detects transmission range switch L position signal In L: about 0 V
In any position other than L: about 5.0V
(1) Keihin PCM
(2) Continental PCM
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