Honda Civic. Manual — part 1083

Is DTC 12-11, 14-11, 16-11, and/or 18-11 indicated?

YES -lf the DTC 12-12,14-12,16-12, or 18-12 is indicated at the same time, do
the DTC 12-12, 14-12,16-12, or 18-12 troubleshooting (see DTC 12-12:
Right-front Wheel Speed Sensor Short to the Other Sensor Circuit; DTC
14-12: Left-front Wheel Speed Sensor Short to the Other Sensor Circuit;
DTC 16-12: Right-rear Wheel Speed Sensor Short to the Other Sensor
Circuit; DTC 18-12: Left-rear Wheel Speed Sensor Short to the Other
Sensor Circuit ). If DTC 12-12, 14-12,16-12 or 18-12 is not indicated, go to
step 5.

NO -Troubleshoot the indicated DTC. If there are no DTCs indicated, there
may be an intermittent failure, the system is OK at this time. Check for loose
terminals between the wheel speed sensor 2P connector and the VSA
modulator-control unit 37P connector. Refer to INTERMITTENT
FAILURES TROUBLESHOOTING (see ).

5. Turn the ignition switch to LOCK (0).
6. Check that the appropriate wheel speed sensor is properly mounted (see

WHEEL SPEED SENSOR REPLACEMENT ).

DTC REFERENCE

Is the wheel speed sensor installation OK?

YES -Check for loose terminals in the VSA modulator-control unit 37P
connector. If necessary, substitute a known-good VSA modulator-control unit
(see VSA MODULATOR-CONTROL UNIT REMOVAL AND
INSTALLATION ), and retest.

NO -Reinstall the wheel speed sensor, and check the mounting position (see

DTC Appropriate Wheel Speed Sensor

12-11

Right-front

14-11

Left-front

16-11

Right-rear

18-11

Left-rear

2008 Honda Civic GX

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

WHEEL SPEED SENSOR REPLACEMENT ).

DTC 12-12: RIGHT-FRONT WHEEL SPEED SENSOR SHORT TO THE OTHER SENSOR
CIRCUIT; DTC 14-12: LEFT-FRONT WHEEL SPEED SENSOR SHORT TO THE OTHER SENSOR
CIRCUIT; DTC 16-12: RIGHT-REAR WHEEL SPEED SENSOR SHORT TO THE OTHER SENSOR
CIRCUIT; DTC 18-12: LEFT-REAR WHEEL SPEED SENSOR SHORT TO THE OTHER SENSOR
CIRCUIT

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 12-12, 14-12, 16-12, and/or 18-12 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for loose
terminals between the wheel speed sensor 2P connector and the VSA
modulator-control unit 37P connector. Refer to INTERMITTENT
FAILURES TROUBLESHOOTING (see ).

5. Turn the ignition switch to LOCK (0).
6. Disconnect VSA modulator-control unit 37P connector.
7. Check for continuity between the appropriate VSA modulator-control unit 37P

connector wheel speed sensor +B terminals (see table).

DTC REFERENCE

NOTE:

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

DTC

VSA Modulator-control Unit 37P Connector Terminal No.

Appropriate Terminal

Other Terminals

12-12

No. 19

No. 22

No. 9

No. 20

14-12

No. 22

No. 19

No. 9

No. 20

16-12

No. 9

No. 19

No. 22

No. 20

2008 Honda Civic GX

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

Fig. 23: Checking Continuity Between Appropriate VSA Modulator-
Control Unit 37P Connector Wheel Speed Sensor +B Terminals

Is there continuity?

YES -Repair short in the wires between the appropriate wheel speed sensor
and the VSA modulator-control unit.

NO -Check for loose terminals in the VSA modulator-control unit 37P

18-12

No. 20

No. 19

No. 22

No. 9

2008 Honda Civic GX

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

connector. If necessary, substitute a known-good VSA modulator-control unit
(see VSA MODULATOR-CONTROL UNIT REMOVAL AND
INSTALLATION ), and retest.

DTC 12-21: RIGHT-FRONT WHEEL SPEED SENSOR INSTALLATION ERROR; DTC 14-21: LEFT-
FRONT WHEEL SPEED SENSOR INSTALLATION ERROR; DTC 16-21: RIGHT-REAR WHEEL
SPEED SENSOR INSTALLATION ERROR; DTC 18-21: LEFT-REAR WHEEL SPEED SENSOR
INSTALLATION ERROR

1. Test-drive the vehicle. Drive the vehicle at 7 mph (10 km/h).

2. Check the RF, LF, RR, LR WHEEL SPD in the VSA 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 speed sensor 2P connector and the VSA
modulator-control unit 37P connector. Refer to INTERMITTENT
FAILURES TROUBLESHOOTING (see ).

NO -Go to step 3.

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

WHEEL SPEED SENSOR REPLACEMENT ).

DTC REFERENCE

Is the wheel speed sensor installation OK?

NOTE:

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

DTC Appropriate Wheel Speed Sensor

12-21

Right-front

14-21

Left-front

16-21

Right-rear

18-21

Left-rear

2008 Honda Civic GX

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