DTC 12, 14, 16 & 18: Wheel Sensor Intermittent Interruption

NOTE: If ABS indicator light does not come on during road test, it is possible that DTC set due to a condition where only the drive wheels rotated, vehicle spun out or some type of electrical noise.

Visually check appropriate wheel speed sensor and wheel pulser installation for specific DTC set as follows:
- DTC 12 - Right Front Wheel
- DTC 14 - Left Front Wheel
- DTC 16 - Right Rear Wheel
- DTC 18 - Left Rear Wheel
If a problem is found in wheel speed sensor, repair as necessary. See WHEEL SPEED SENSOR under REMOVAL & INSTALLATION. If a problem is found in front wheel pulser, see FWD AXLE SHAFTS article in DRIVE AXLES. If a problem is found in rear wheel pulser, see HUB/BEARING ASSEMBLY under REMOVAL & INSTALLATION in REAR article in SUSPENSION. If wheel speed sensor and wheel pulser check okay, go to next step.
Disconnect 22-pin connector from ABS control unit. Using DVOM, measure resistance between terminals of affected circuits at ABS control unit connector for specific DTC set as follows:
- DTC 12 - Terminal No. 9 (Green/Black wire) and terminal No. 8 (Green wire) for right front wheel.
- DTC 14 - Terminal No. 7 (Green/Blue wire) and terminal No. 6 (Brown wire) for left front wheel.
- DTC 16 - Terminal No. 19 (Green/Yellow wire) and terminal No. 20 (Blue/Yellow wire) for right rear wheel.
- DTC 18 - Terminal No. 17 (Light Blue wire) and terminal No. 18 (Gray wire) for left rear wheel.
See Figure . If resistance is less than 450 ohms, wires are shorted together. See WIRING DIAGRAMS . Repair as necessary. If resistance is 450 ohms or more, go to next step.
Using DVOM, check continuity at ABS control unit connector between terminal of affected circuit for specific DTC set and other 3 wheel speed sensor terminals as follows:
- DTC 11 - Terminal No. 9 (Green/Black wire) for right front wheel.
- DTC 13 - Terminal No. 7 (Green/Blue wire) for left front wheel.
- DTC 15 - Terminal No. 19 (Green/Yellow wire) for right rear wheel.
- DTC 17 - Terminal No. 17 (Light Blue wire) for left rear wheel.
If continuity exists, check for short between 2 affected circuits. See WIRING DIAGRAMS . If continuity does not exist, clear code and test drive vehicle. If DTC resets, replace ABS control unit.