Acura RL. Instruction — page 397

Extensive driving on a rough road or the ignition switch is turned ON (ID/OFF.

DTC 102: ACC indicator does not come on, CMBS indicator comes on

Parking brake not fully released, or driving with the parking brake stuck.

HOW TO RETRIEVE DTCS

1. With the ignition switch OFF, connect the HDS to the data link connector (DLC) (A) under the left

side of the dashboard.

Fig. 4: Identifying HDS To Data Link Connector (DLC)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Turn the ignition switch ON (II).

3. Make sure the HDS communicates with the vehicle and the ACC unit. If it does not communicate,

troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).

4. Follow the prompts on the HDS to display the DTC(s) on the screen. After determining the DTC,

refer to the DTC TROUBLESHOOTING.

HOW TO CLEAR DTCS

1. With the ignition switch OFF, connect the HDS to the data link connector (DLC) (A) under the left

side of the dashboard.

NOTE:

See the HDS Help menu for specific instructions.

NOTE:

You cannot clear the DTCs manually.

2007 Acura RL

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

me

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

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 5: Identifying HDS To Data Link Connector (DLC)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Turn the ignition switch ON (II).

3. Make sure the HDS communicates with the vehicle and the ACC unit. If it does not communicate,

troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).

4. Clear the DTC(s) by following the screen prompts on the HDS.

DTC TROUBLESHOOTING INDEX

DTC TROUBLESHOOTING INDEX

NOTE:

See the HDS Help menu for specific instructions.

Some DTCs cannot be cleared until the radar aiming is complete.

DTC

Detection Item

Adaptive Cruise

Control (ACC)

Indicator

CMBS Indicator

11

Left rear wheel sensor
problem

o

o

12

Right rear wheel sensor
problem

o

o

13

Left front wheel sensor
problem

o

o

14

Right front wheel sensor
problem

o

o

20

Steering angle sensor
malfunction

o

21

Yaw rate-
lateral/longitudinal
acceleration sensor
malfunction

o

o

22

Yaw rate-
lateral/longitudinal
acceleration sensor center
position revision value

o

o

2007 Acura RL

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

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© 2005 Mitchell Repair Information Company, LLC.

error

23

Yaw rate-
lateral/longitudinal
acceleration sensor gain
error

o

o

25

Yaw rate-
lateral/longitudinal
acceleration sensor
stabilizing malfunction

o

o

30

Adaptive cruise control
(ACC) relay circuit
malfunction

o

o

34

Master cylinder brake
fluid pressure sensor
circuit open/short

o

35

Master cylinder brake
fluid pressure sensor
center position error

o

36

Master cylinder brake
fluid pressure sensor shift
error

o

60

Communication line error

o

o

61

Millimeter wave radar
unit communication error

o

o

62

Millimeter wave radar
sensor error

o

o

63

Millimeter wave radar
unit aiming error

o

o

64

CMBS operation error
(excessive operation)

o

88

Millimeter wave radar out
of detection area

o

90

A/T system and/or PGM-
FI system malfunction

o

95

Power supply voltage too
high

o

96

Power supply voltage too
low

o

97

CMBS offset cancel
timeout

o

100

CMBS initial check
incomplete

o

o

102

CMBS parking brake
incomplete releasing

o

103

CMBS brake control
prohibition

o

105

Dust or dirt on the
millimeter wave radar unit

o

2007 Acura RL

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

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

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© 2005 Mitchell Repair Information Company, LLC.

SYMPTOM TROUBLESHOOTING INDEX

TROUBLESHOOTING CHART

107

Millimeter wave radar
unit aiming incomplete

o

o

110

Lost communication with
the PCM (PGM-FI
system)

o

111

Lost communication with
the PCM (A/T system)

o

112

Lost communication with
the VSA modulator-
control unit

o

113

Lost communication with
the gauge control module

o

115

Lost communication with
the SH-AWD control unit

o

NOTE:

When both the ACC and CMBS indicators come on, do the ACC system troubleshooting first
(except DTC 100).

Symptom

Diagnostic procedure

Also check for

CMBS OFF switch does not
turn on/turn off (CMBS
indicator does not change)

1. Adaptive cruise control

(ACC) system
troubleshooting (No DTC
Indication) (see ADAPTIVE
CRUISE CONTROL (ACC)
SYSTEM
TROUBLESHOOTING
(NO DTC INDICATION)
).

2. Test the CMBS OFF switch

(see CMBS OFF SWITCH
TEST/REPLACEMENT
).

3. Do the gauge control module

self-diagnostic function (see
SELF-DIAGNOSTIC
FUNCTION
).

An open in the wire

A short in the wire

The MID does not indicate
when the CMBS OFF switch is
operated

1. Adaptive cruise control

(ACC) system
troubleshooting (No DTC
Indication) (see ADAPTIVE
CRUISE CONTROL (ACC)
SYSTEM
TROUBLESHOOTING
(NO DTC INDICATION)
).

2. Test the CMBS OFF switch

(see CMBS OFF SWITCH

An open in the wire

A short in the wire

2007 Acura RL

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

me

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

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© 2005 Mitchell Repair Information Company, LLC.

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