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

NOTE: If the ABS indicator come on because of electrical noise, the indicator will go off when you test-drive the vehicle at 9 mph (15 km/h) after the system returns to normal.

Turn the ignition switch to LOCK (0).

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

WHEEL SPEED SENSOR SPECIFICATION

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 CHART

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

Is the magnetic encoder OK?

YES -Go to step 4.

NO -Replace the wheel bearing (front) or the hub bearing unit (rear):

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

Disconnect the ABS modulator-control unit 47P connector (see ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

Check for continuity between the appropriate wheel speed sensor GND terminal and other wheel speed sensor GND terminals of the ABS modulator-control unit 47P connector (see table).

DTC CHART

DTC	Appropriate Terminal	Other Terminals
12	FR-GND: No. 33	No. 46	No. 42	No. 37
14	FL-GND: No. 46	No. 33	No. 42	No. 37
16	RR-GND: No. 42	No. 33	No. 46	No. 37
18	RL-GND: No. 37	No. 33	No. 46	No. 42

Fig 1: Checking Continuity Between Appropriate Wheel Speed Sensor GND Terminal And Speed Sensor GND Terminals

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 a 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 to LOCK (0).
Test-drive the vehicle at 19 mph (30 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 ABS modulator-control unit 47P connector. If necessary, substitute a known-good ABS modulator-control unit (see ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), and retest.

NO -Replace the original wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).