DTC 12, 14, 16, 18: Wheel Sensor Pulse Signal

NOTE: The ABS indicator goes off when you test-drive the vehicle at 31 mph (50 km/h), if the indicator comes on for these reasons.

Only the drive wheel rotated
The vehicle spin
Electrical noise

Visually check for appropriate wheel sensor and pulser installation and condition (see table).

DTC APPROPRIATE TERMINAL REFERENCE (DTC 12, 14, 16, 18: WHEEL SENSOR PULSE SIGNAL)

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

Are they installed correctly and not damaged?

YES - Go to step 2.

NO - Reinstall or replace the appropriate wheel sensor or pulser.

Disconnect the ABS control unit 31P connector.

Measure the resistance between the appropriate wheel sensor (+) and (-) circuit terminals of the ABS control unit 31P connector (see table).

DTC APPROPRIATE TERMINAL REFERENCE (DTC 12, 14, 16, 18: WHEEL SENSOR PULSE SIGNAL) (RESISTANCE)

DTC	Appropriate Terminal
DTC	(+) Side	(-) Side
12 (Right-front)	No. 5: FRS (+)	No. 4: FRS (-)
14 (Left-front)	No. 7: FLS (+)	No. 6: FLS (-)
16 (Right-rear)	No. 3: RRS (+)	No. 1: RRS (-)
18 (Left-rear)	No. 9: RLS (+)	No. 8: RLS (-)

Fig 1: Identifying ABS Control Unit 31P Connector Terminal

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 450 Ω ?

YES - Go to step 5.

NO - Go to step 4.

Check for continuity between the appropriate wheel sensor (+) circuit terminal and other wheel sensor (+) circuit terminals of the ABS control unit 31P connector (see table).

DTC APPROPRIATE TERMINAL REFERENCE (DTC 12, 14, 16, 18: WHEEL SENSOR PULSE SIGNAL) (CONTINUITY)

DTC	Appropriate Terminal	Other Terminal
12	No. 5: FRS (+)	No. 7	No. 3	No. 9
14	No. 7: FLS (+)	No. 5	No. 3	No. 9
16	No. 3: RRS (+)	No. 5	No. 7	No. 9
18	No. 9: RLS (+)	No. 5	No. 7	No. 3

Fig 2: Identifying ABS Control Unit 31P Connector Terminal

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO - Clear the DTC, and test-drive the vehicle. If the ABS indicator comes on and the same DTC is indicated, replace the ABS modulator-control unit (see ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

Disconnect the harness 2P connector from the appropriate wheel sensor, and check the resistance between the (+) side and the (-) side of the wheel sensor.
Is there less than 450 Ω ?

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

NO - Repair short to wire between the appropriate wheel sensor (+) and (-) circuits.