Honda Civic. Manual — part 9

Fig. 16: Checking Continuity Between Body Ground And Appropriate
ABS Modulator-Control Unit 25P Connector Terminal

Is there continuity?

YES - Go to step 13.

NO - Go to step 15.

13. Disconnect the appropriate wheel sensor 2P connector.
14. On the sensor side, check for continuity between body ground and appropriate

wheel sensor 2P connector terminal No. 1 and No. 2 individually.

Fig. 17: Checking Continuity Between Body Ground And Appropriate

15-13

No. 6

No. 15

17-13

No. 14

No. 5

NOTE:

Check the wheel sensor while mounted on the vehicle.

2008 Honda Civic GX

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

Wheel Sensor 2P Connector Terminal No. 1 And No. 2

Is there continuity?

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

NO - Repair short to body ground in the wire between the appropriate wheel
sensor and the ABS modulator-control unit.

15. Turn the ignition switch ON (II).
16. Measure voltage between body ground and the appropriate ABS modulator-

control unit 25P connector terminal (see BODY GROUND AND
APPROPRIATE ABS MODULATOR-CONTROL UNIT 25P
CONNECTOR TERMINAL ).

BODY GROUND AND APPROPRIATE ABS MODULATOR-
CONTROL UNIT 25P CONNECTOR TERMINAL

Fig. 18: Measuring Voltage Between Body Ground And Appropriate ABS
Modulator-Control Unit 25P Connector Terminal

DTC ABS Modulator-control Unit 25P Connector Terminal No.

11-13

No. 2

No. 18

13-13

No. 12

No. 3

15-13

No. 6

No. 15

17-13

No. 14

No. 5

2008 Honda Civic GX

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

Is there 0.1 V or more?

YES - Repair short to power in the wire between the appropriate wheel sensor
and the ABS modulator-control unit.

NO - Check for loose terminals in the ABS modulator-control unit 25P
connector. If necessary, substitute a known-good ABS modulator-control unit:
Except Si model (see REMOVAL - EXCEPT SI MODEL ), Si model (see
REMOVAL - SI MODEL ), and retest.

DTC 12-11: RIGHT-FRONT WHEEL SENSOR ELECTRICAL NOISE OR INTERMITTENT
INTERRUPTION; DTC 14-11: LEFT-FRONT WHEEL SENSOR ELECTRICAL NOISE OR
INTERMITTENT INTERRUPTION; DTC 16-11: RIGHT-REAR WHEEL SENSOR ELECTRICAL
NOISE OR INTERMITTENT INTERRUPTION; DTC 18-11: LEFT-REAR WHEEL SENSOR
ELECTRICAL NOISE OR INTERMITTENT INTERRUPTION

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle.
4. Check for DTCs with the HDS.

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

YES - If the DTC 12-12,14-12,16-12 or 18-12 is indicated at same time, do the
DTC 12-12,14-12, 16-12 or 18-12 troubleshooting (see DTC 12-12: RIGHT-
FRONT WHEEL SENSOR SHORT TO THE OTHER SENSOR
CIRCUIT; DTC 14-12: LEFT-FRONT WHEEL SENSOR SHORT TO
THE OTHER SENSOR CIRCUIT; DTC 16-12: RIGHT-REAR WHEEL
SENSOR SHORT TO THE OTHER SENSOR CIRCUIT; DTC 18-12:
LEFT-REAR WHEEL 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

NOTE:

These DTCs may be caused by electrical interference.
Check for aftermarket devices installed in the vehicle when
these DTCs are indicated.

2008 Honda Civic GX

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

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. Check that the appropriate wheel sensor is properly mounted (see WHEEL

SENSOR REPLACEMENT ).

WHEEL SENSOR

Is the wheel sensor installation OK?

YES - Check for loose terminals in the ABS modulator-control unit 25P
connector. If necessary, substitute a known-good ABS modulator-control unit:
Except Si model (see REMOVAL - EXCEPT SI MODEL ), Si model (see
REMOVAL - SI MODEL ), and retest.

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

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

DTC Appropriate Wheel Sensor

12-11

Right-front

14-11

Left-front

16-11

Right-rear

18-11

Left-rear

NOTE:

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

2008 Honda Civic GX

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