Acura RL. Instruction — page 222

Fig. 30: Clutch Pressure Control Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Lock-up Control

Shift solenoid valve D controls the hydraulic pressure to switch the lock-up shift valve and lock-up ON and
OFF. When the PCM turns shift solenoid valve D and A/T clutch pressure control solenoid valve C ON, and
lock-up starts. A/T clutch pressure control solenoid valve C regulates and applies hydraulic pressure to the lock-
up control valve to control the amount of the lock-up.

The lock-up mechanism operates in 2nd, 3rd, 4th, and 5th gears in D, and in 2nd and 3rd gears in D3.

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission — RL

me

Friday, June 05, 2009 1:18:11 PM

Page 59

© 2005 Mitchell Repair Information Company, LLC.

Fig. 31: Lock-Up Control Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM A/T Control System Electrical Connections

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission — RL

me

Friday, June 05, 2009 1:18:11 PM

Page 60

© 2005 Mitchell Repair Information Company, LLC.

Fig. 32: PCM A/T Control System Electrical Connections Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM A/T Control System Inputs and Outputs

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission — RL

me

Friday, June 05, 2009 1:18:11 PM

Page 61

© 2005 Mitchell Repair Information Company, LLC.

Fig. 33: Identifying PCM Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCM CONNECTOR A (31P)

PCM CONNECTOR TERMINAL REFERENCE A — (31P)

PCM CONNECTOR B (24P)

PCM CONNECTOR TERMINAL REFERENCE B — (24P)

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

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

Drives IMT actuator With ignition

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission — RL

me

Friday, June 05, 2009 1:18:11 PM

Page 62

© 2005 Mitchell Repair Information Company, LLC.

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