Honda Civic. Manual — part 11

YES - Replace the appropriate wheel sensor (see WHEEL SENSOR
REPLACEMENT ).

NO - Reinstall the wheel sensor, and check the mounting position (see
WHEEL SENSOR REPLACEMENT ).

DTC 12-23: RIGHT-FRONT WHEEL SENSOR INSTALLATION ERROR (0 TO 9 MPH (0 TO 15
KM/H)); DTC 14-23: LEFT-FRONT WHEEL SENSOR INSTALLATION ERROR (0 TO 9 MPH (0 TO
15 KM/H)); DTC 16-23: RIGHT-REAR WHEEL SENSOR INSTALLATION ERROR (0 TO 9 MPH (0
TO 15 KM/H)); DTC 18-23: LEFT-REAR WHEEL SENSOR INSTALLATION ERROR (0 TO 9 MPH
(0 TO 15 KM/H))

1. Test-drive the vehicle. Drive the vehicle between 1 mph (1 km/h) and 9 mph

(15 km/h) in a straight line.

2. Check the RF, LF, RR, LR WHEEL SPD in the ABS DATA LIST with the

HDS.

Are all four the same indicated value?

YES - Intermittent failure, the system is OK at this time. Check for loose
terminals between the wheel sensor 2P connector and the ABS modulator-
control unit 25P connector. Refer to INTERMITTENT FAILURES
TROUBLESHOOTING .

NO - Go to step 3.

3. Turn the ignition switch to LOCK (0).
4. Check that the appropriate wheel sensor is properly mounted (see WHEEL

SENSOR REPLACEMENT ).

WHEEL SENSOR

NOTE:

Drive the vehicle on the road, not on the lift.

DTC Appropriate Wheel Sensor

12-23

Right-front

14-23

Left-front

16-23

Right-rear

2008 Honda Civic GX

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

Is the wheel sensor installation OK?

YES - Replace the appropriate wheel sensor (see WHEEL SENSOR
REPLACEMENT ).

NO - Reinstall the wheel sensor, and check the mounting position (see
WHEEL SENSOR REPLACEMENT ).

DTC 21-11: RIGHT-FRONT MAGNETIC ENCODER MALFUNCTION (PULSE MISSING); DTC 22-
11: LEFT-FRONT MAGNETIC ENCODER MALFUNCTION (PULSE MISSING); DTC 23-11:
RIGHT-REAR MAGNETIC ENCODER MALFUNCTION (PULSE MISSING); DTC 24-11: LEFT-
REAR MAGNETIC ENCODER MALFUNCTION (PULSE MISSING)

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle. Drive the vehicle at 13 mph (20 km/h) or more, and go a

distance of 328 ft (100 m) or more.

4. Check for DTCs with the HDS.

Is DTC 21-11,22-11,23-11, and/or 24-11 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose
terminals between the wheel sensor 2P connector and the ABS modulator-
control unit 25P connector. Refer to INTERMITTENT FAILURES
TROUBLESHOOTING .

5. Turn the ignition switch to LOCK (0).
6. Inspect the appropriate magnetic encoder for debris or cracks.

MAGNETIC ENCODER

18-23

Left-rear

NOTE:

Drive the vehicle on the road, not on the lift.

Appropriate

2008 Honda Civic GX

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

Is the magnetic encoder surface OK?

YES - Replace the wheel bearing (front) or the hub bearing unit (rear):

Front: Replace the front wheel bearing (see KNUCKLE/HUB
REPLACEMENT ).

Rear (disc brake type): Replace the rear hub bearing unit (see HUB
BEARING UNIT REPLACEMENT-DISC BRAKE TYPE ).

Rear (drum brake type): Replace the hub bearing unit (see HUB
BEARING UNIT REPLACEMENT-DRUM BRAKE TYPE ).

NO - Clean off dust or dirt from the appropriate magnetic encoder surface on
the wheel bearing or the hub bearing unit, then go to step 1 and recheck. If the
DTC is still present, replace the appropriate wheel bearing or hub bearing unit.

DTC 31-XX*: ABS RIGHT-FRONT INLET SOLENOID VALVE MALFUNCTION; DTC 32-

XX*: ABS

RIGHT-FRONT OUTLET SOLENOID VALVE MALFUNCTION; DTC 33-XX*: ABS LEFT-FRONT
INLET SOLENOID VALVE MALFUNCTION; DTC 34-XX*: ABS LEFT-FRONT OUTLET
SOLENOID VALVE MALFUNCTION; DTC 35-XX*: ABS RIGHT-REAR INLET SOLENOID
VALVE MALFUNCTION; DTC 36-XX*: ABS RIGHT-REAR OUTLET SOLENOID VALVE
MALFUNCTION; DTC 37-XX*: ABS LEFT-REAR INLET SOLENOID VALVE MALFUNCTION;
DTC 38-XX*: ABS LEFT-REAR OUTLET SOLENOID VALVE MALFUNCTION

*:Subcode

1. Turn the ignition switch ON (II).

DTC

Magnetic

Encoder

Note

21-

11

Right-front

Remove the driveshaft outboard joint from the
appropriate wheel hub (see KNUCKLE/HUB
REPLACEMENT ).

22-

11

Left-front

23-

11

Right-rear

Remove the hub bearing unit: Disc brake type (see
HUB BEARING UNIT REPLACEMENT-DISC
BRAKE TYPE ), drum brake type (see HUB
BEARING UNIT REPLACEMENT-DRUM
BRAKE TYPE ).

24-

11

Left-rear

2008 Honda Civic GX

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

2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
4. Check for DTCs with the HDS.

SOLENOID VALVE MALFUNCTION

Is DTC 31-xx, 32-xx, 33-xx, 34-xx, 35-xx, 36-xx, 37-xx, or 38-xx indicated?

YES - Replace the ABS modulator-control unit: Except Si model (see
REMOVAL - EXCEPT SI MODEL ), Si model (see REMOVAL - SI
MODEL ).

NO - Intermittent failure, the system is OK at this time.

DTC 41-21: RIGHT-FRONT WHEEL LOCK; DTC 42-21: LEFT-FRONT WHEEL LOCK; DTC 43-

21:

RIGHT-REAR WHEEL LOCK; DTC 44-21: LEFT-REAR WHEEL LOCK

The DTCs may be indicated under these conditions:

The vehicle goes into a spin.

The ABS continues to operate for a long time.

Snow build-up on the wheel sensor.

Misadjusted brake switch

Contaminated brake fluid

1. Raise the vehicle, and support it with safety stands in the proper locations (see

Subcode

Malfunction

Note (DTC)

01

Solenoid Initial

Pulse

31-01,32-01,33-01, 34-01,35-01,36-01, 37-

01,38-01

21

Solenoid Pulse

31-21,32-21,33-21, 34-21,35-21,36-21, 37-

21,38-21

22

Solenoid

Speculative

31-22,32-22, 33-22, 34-22,35-22,36-22, 37-22,

38-22

23

Solenoid Stuck ON

31-23, 32-23, 33-23, 34-23, 35-23, 36-23, 37-

23, 38-23

2008 Honda Civic GX

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