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ABS DTC Troubleshooting: 12-12, 14-12, 16-12, 18-12

DTC 12-12:
 Right-front Wheel Speed Sensor Short to the Other Sensor Circuit
DTC 14-12:
 Left-front Wheel Speed Sensor Short to the Other Sensor Circuit
DTC 16-12:
 Right-rear Wheel Speed Sensor Short to the Other Sensor Circuit
DTC 18-12:
 Left-rear Wheel Speed Sensor Short to the Other Sensor Circuit
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 20 km/h (13 mph) or more, and go a distance of 100 m (328 ft) 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 12-12, 14-12, 16-12, and/or 18-12 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel speed sensor 2P connector and the ABS modulator-control unit 25P connector. Refer to intermittent failures troubleshooting.
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between the appropriate ABS modulator-control unit 25P connector wheel speed sensor GND terminals (see table).
    DTC
    ABS Modulator-control Unit 25PConnector Terminal
    AppropriateTerminal
    Other Terminals
    12-12
    No. 18
    No. 3
    No. 15
    No. 5
    14-12
    No. 3
    No. 18
    No. 15
    No. 5
    16-12
    No. 15
    No. 18
    No. 3
    No. 5
    18-12
    No. 5
    No. 18
    No. 3
    No. 15

Is there continuity?
YES -
Repair short in the wires between the appropriate wheel speed 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, and retest.■