( TL19E00K80100081120FAAT00 )

DTC Troubleshooting: 12, 14, 16, 18

DTC 12, 14, 16, 18:
Wheel Speed Sensor (Electrical Noise/Intermittent Interruption)
NOTE: If the ABS and the VSA indicators come on because of electrical noise, the indicator goes off when you test-drive the vehicle at 15 km/h (9 mph).

1. Turn the ignition switch to LOCK (0).

1. Check that the appropriate wheel speed sensor is properly mounted.

   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. ■

1. Inspect the appropriate magnetic encoder.

   DTC | Appropriate Magnetic Encoder | Note
   --- | --- | ---
   12 | Right-front | Remove the driveshaft outboard joint from the appropriate wheel hub.
   14 | Left-front
   16 | Right-rear | Remove the hub bearing unit.
   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.
- Rear: Replace the rear hub bearing unit.

1. Disconnect the VSA modulator-control unit 47P connector.

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

   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

Is there continuity?

YES | - | Repair short in the wires between the appropriate wheel speed sensor and the other wheel speed sensor.■
NO | - | Go to Step 6 .

1. Substitute a known-good wheel speed sensor.

1. Reconnect all connectors.

1. Turn the ignition switch to ON (II).

1. Clear the DTC with the HDS.

1. Test-drive the vehicle. Drive the vehicle at 30 km/h (19 mph) or more.
   NOTE: Drive the vehicle on a straight section of road, not on a lift.

1. Check for DTCs with the HDS.

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

YES | - | Go to Step 12 .
NO | - | Replace the original wheel speed sensor. ■

1. Update the VSA modulator-control unit if it does not have the latest software. If the unit already has the latest software, substitute a known-good VSA modulator-control unit.

1. Test-drive the vehicle. Drive the vehicle at 30 km/h (19 mph) or more.
   NOTE: Drive the vehicle on a straight section of road, not on a lift.

1. Check for DTCs with the HDS.

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

YES | - | Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, then retest. If the VSA modulator-control unit was substituted, go to Step 1 .
NO | - | If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.■