Honda Civic. Manual — part 1070

regular diagnosis when the vehicle is driven over 10 mph (15 km/h) the first
time after the ignition switch is turned ON (II). You may hear the motor
operate at this time, but it is normal.

BRAKE FLUID REPLACEMENT/AIR BLEEDING

Brake fluid replacement and air bleeding procedures are identical to the procedures
used on vehicles without VSA system (see BRAKE SYSTEM BLEEDING ).

HOW TO TROUBLESHOOT DTCS

The troubleshooting procedures assume that the cause of the problem is still present
and the ABS and/or VSA indicator is still on. Following a troubleshooting
procedure for a code that has been cleared and does not reset can result in incorrect
diagnosis.

1. Question the customer about the conditions when the problem occurred, and

try to reproduce the same conditions for troubleshooting. Find out when the
ABS and/or VSA indicator came on, such as during VSA system operation,
after VSA system operation, when vehicle was traveling at a certain speed, etc.

2. When the ABS or VSA indicator does not come on during the test-drive, but

troubleshooting is done based on the DTC, check for loose connectors, poor
contact of the terminals, etc. before you start troubleshooting.

3. After troubleshooting, or repairs are done, clear the DTCs, and test-drive the

vehicle under the same conditions that originally set the DTCs. Make sure the
ABS and VSA indicators do not come on.

4. Check for other unit DTCs which are connected via F-CAN, if there are DTCs

that are related to F-CAN, the most likely cause was that the ignition switch
was turned ON (II) with the VSA modulator-control unit connector
disconnected. Clear the DTCs. Check for PGM-FI and VSA codes, and
troubleshoot those first.

INTERMITTENT FAILURES

The term "intermittent failure" means a system may have had a failure, but it checks
OK now. If the indicator(s) of the system does not come on, check for poor
connections or loose pins at all connectors related to the circuit that you are

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

troubleshooting. If the indicators were on but then went out, the original problem
may have been intermittent.

HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)

1. If the system indicators stay on, connect the HDS to the data link connector

(DLC) (A) located under the driver's side of the dashboard.

Fig. 3: Identifying DLC Connector

2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-

control unit. If it doesn't, troubleshoot the DLC circuit (see DLC CIRCUIT
TROUBLESHOOTING ).

4. Check the diagnostic trouble code (DTC) and note it. Also check the on board

snapshot data, and download any data found. Then refer to the indicated DTC's
troubleshooting, and begin the appropriate troubleshooting procedure.

HOW TO RETRIEVE DTCS

NOTE:

The HDS communication will be stopped when the
vehicle speed is at 31 mph (50 km/h) or more.

The HDS can read the DTC, current data, and other
system data.

For specific operations, refer to the Help menu that
came with the HDS.

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

1. With the ignition switch to LOCK (0), connect the HDS to the data link

connector (DLC) under the driver's side of the dashboard.

2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-

control unit. If it doesn't 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.

5. Turn the ignition switch to LOCK (0).

HOW TO CLEAR DTCS

1. With the ignition switch to LOCK (0), connect the HDS to the data link

connector (DLC) under the driver's side of the dashboard.

2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-

control unit. If it doesn't troubleshoot the DLC circuit (see DLC CIRCUIT
TROUBLESHOOTING ).

4. Clear the DTC(s) by following the screen prompts on the HDS.
5. Turn the ignition switch to LOCK (0).

DTC TROUBLESHOOTING INDEX

DTC TROUBLESHOOTING INDEX

DTC

Detection

Item

ABS

Indicator

Brake

System

Indicator

VSA

Indicator

VSA

Activation

Indicator

11

-13

Right-front
wheel speed
sensor circuit
malfunction

ON

ON/OFF

(1)

ON

ON

12

-11

Right-front
wheel speed
sensor

ON

ON/OFF

(1)

ON

ON

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

electrical noise
or intermittent
interruption

-12

Right-front
wheel speed
sensor short to
the other
sensor circuit

ON

ON/OFF

(1)

ON

ON

-21

Right-front
wheel speed
sensor
installation
error

ON

ON/OFF

(1)

ON

ON

-22

Right-front
wheel speed
sensor
installation
error (19 mph
(30 km/h) or
more)

ON

ON/OFF

(1)

ON

ON

-23

Right-front
wheel speed
sensor
installation
error (0 to 9
mph (0 to 15
km/h))

ON

ON/OFF

(1)

ON

ON

13

-13

Left-front
wheel speed
sensor circuit
malfunction

ON

ON/OFF

(1)

ON

ON

14

-11

Left-front
wheel speed
sensor
electrical noise

ON

ON/OFF

(1)

ON

ON

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)