Acura RL. Instruction — page 399

Fig. 7: CMBS Activation Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

GAUGE CONTROL MODULE

When a problem or malfunction is detected, the CMBS indicator comes on. With some problems or
malfunctions, the condition is displayed on the MID.

When the CMBS is turned off by the CMBS OFF switch, the CMBS indicator comes on, and the MID
indicates that the CMBS is off.

2007 Acura RL

2005-08 BRAKES Collision Mitigation Brake System (CMBS) — RL

me

Friday, June 05, 2009 2:59:19 PM

Page 13

© 2005 Mitchell Repair Information Company, LLC.

Fig. 8: Identifying Gauge Control Module
Courtesy of AMERICAN HONDA MOTOR CO., INC.

CMBS OFF SWITCH

The CMBS can be turned off by the CMBS OFF switch on the left side of the dashboard next to the gauge
control module. (Press and hold the switch for more than a second.)

Fig. 9: Identifying CMBS OFF Switch
Courtesy of AMERICAN HONDA MOTOR CO., INC.

ADAPTIVE CRUISE CONTROL (ACC) SYSTEM INPUTS AND OUTPUTS

2007 Acura RL

2005-08 BRAKES Collision Mitigation Brake System (CMBS) — RL

me

Friday, June 05, 2009 2:59:19 PM

Page 14

© 2005 Mitchell Repair Information Company, LLC.

Fig. 10: Identifying ACC Unit 20P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

TERMINAL DESCRIPTION CHART

Terminal

number

Wire color

Terminal sign Terminal name

Description

Signal

1

RED

BRK DIAG

Brake diagnosis Detects ACC

relay

ACC system
brake operated
or brake pedal
pressed: battery
voltage

2

BLU

IG1

Ignition signal

Detects ignition
signal

Ignition switch
ON (II): battery
voltage
Ignition switch
OFF: about 0 V

3

GRN

SG

Sensor ground

Sensor ground

5

RED

VCC

Voltage
constant current

Provides sensor
voltage

Ignition switch
ON (II): about 5
V
Ignition switch
OFF: about 0 V

6

BLU

PRESS FR

Pressure front
right

Detects the brake
fluid pressure
signal of the right
front brake
caliper

Ignition switch
ON (II): about
0.5 — 4.5 V
Ignition switch
OFF: about 0 V

8

BLU

K-LINE

Data link

Sends and
receives scan tool
signal

9

BLK

PG

Power ground

Ground circuit
for the ACC
system

10

WHT

CANH

CAN High line F-CAN

communication
(high) circuit

11

BLK

LG1

Logic ground 1 Ground circuit

for the ACC

2007 Acura RL

2005-08 BRAKES Collision Mitigation Brake System (CMBS) — RL

me

Friday, June 05, 2009 2:59:19 PM

Page 15

© 2005 Mitchell Repair Information Company, LLC.

CIRCUIT DIAGRAM

system

12

BLK

LG2

Logic ground 2 Ground circuit

for the ACC
system

13

WHT

VBU

Back-up voltage Provides DTC

memory voltage

Battery voltage

14

PNK

PRESS FL

Pressure front
left

Detects the brake
fluid pressure
signal of the left
front brake
caliper

Ignition switch
ON (II): about
0.5 — 4.5 V
Ignition switch
OFF: about 0 V

16

BLU

BRK LAMP

Brake light

Drives the ACC
relay

Ignition switch
ON (II): battery
voltage
Ignition switch
OFF: about 0 V

17

WHT

IWR TRX

Millimeter wave
radar data link

Communicates
with the
millimeter wave
radar unit

Ignition switch
ON (II): battery
voltage
Ignition switch
OFF: about 0 V

20

BLK

CANL

CAN Low line

F-CAN
communication
(low) circuit

2007 Acura RL

2005-08 BRAKES Collision Mitigation Brake System (CMBS) — RL

me

Friday, June 05, 2009 2:59:19 PM

Page 16

© 2005 Mitchell Repair Information Company, LLC.

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