DTC 12, 14, 16, 18: Wheel Speed Sensor Signal Malfunction

NOTE:

If the ABS and other indicators come on because of electrical noise, the indicators will go off when you test-drive the vehicle speed at 10 mph (15 km/h) or more and the noise is gone.
An incorrectly installed wheel bearing can cause one of these DTCs.
Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to LOCK (0).

Check the appropriate wheel speed sensor is properly mounted (see WHEEL SPEED SENSOR REPLACEMENT ).

DTC	Appropriate Wheel Speed Sensor
12	Right-front
14	Left-front
16	Right-rear
18	Left-rear

Is the wheel speed sensor installation OK?

YES -Go to step 3.

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

Inspect the appropriate magnetic encoder for damage, debris, and correct installation.

DTC	Appropriate Magnetic Encoder	Note
12	Right-front	Remove the hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
14	Left-front
16	Right-rear	Remove the hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
18	Left-rear

Is the magnetic encoder surface OK?

YES -Go to step 4.

NO -Remove the debris from the magnetic encoder, or replace the hub bearing unit:

Front: Replace the front hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
Rear: Replace the rear hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).

Disconnect the VSA modulator-control unit 46P connector (see step 3 under VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

Check for continuity between the appropriate wheel speed sensor GND terminal and the other wheel speed sensor GND terminals of the VSA modulator-control unit 46P connector (see table).

DTC	Appropriate Terminal	Other Terminals
12	FR-GND: No. 28	No. 8	No. 10	No. 34
14	FL-GND: No. 34	No. 8	No. 10	No. 28
16	RR-GND: No. 8	No. 10	No. 28	No. 34
18	RL-GND: No. 10	No. 8	No. 28	No. 34

Fig 1: Checking Continuity Between Wheel Speed Sensor And Other Wheel Speed Sensor GND Terminals Of VSA Modulator-Control Unit 46P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short in the wires between the appropriate wheel speed sensor and the other wheel speed sensor.

NO -Go to step 6.

Substitute an appropriate known-good wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch LOCK (0).
Test-drive the vehicle at 10 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?

YES -Go to step 13.

NO -Replace the original wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Turn the ignition switch to LOCK (0).
Test-drive the vehicle at 10 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

NO -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .