PCM Inputs and Outputs at PCM Connector C (◦) (49P): Notes

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying PCM Inputs And Outputs At PCM Connector C (49P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Terminal number

Wire color

Terminal name

Description

Signal

46⁽¹⁾

YEL

ATPS (TRANSMISSION RANGE SWITCH S)

Detects transmission range switch S position signal

In S: about 0 V
In any position other than S: about 5.0 V

46⁽²⁾

YEL

ATPS (TRANSMISSION RANGE SWITCH S)

Detects transmission range switch S position signal

In S: about 0 V
In any position other than S: battery voltage

RED/BLU

KS (KNOCK SENSOR)

Detects knock sensor signal

With engine knocking: pulses

WHT/BLU

IMT+ (INTAKE MANIFOLD TUNING (IMT) ACTUATOR +SIDE)

Drives IMT actuator

With ignition switch ON (II): battery voltage

WHT/RED

IMT- (INTAKE MANIFOLD TUNING (IMT) ACTUATOR-SIDE)

Drives IMT actuator

With ignition switch ON (II): battery voltage

NOTE: Check the label on the PCM to see if it was made by Keihin or Continental. Refer to the GENERAL TROUBLESHOOTING INFORMATION for more details.

⁽¹⁾	Continental PCM

⁽²⁾	Keihin PCM