Impreza RS Coupe AWD F4-2.5L SOHC (1999)
NOTE: Check ABS sensor cable for discontinuity. If necessary, replace with a new one.
Tone Wheel
1. Check tone wheel's teeth (44 pieces) for cracks or dents. If necessary, replace tone wheel with a new one.
2. Clearances (sensor gaps) should be measured one by one to ensure tone wheel and speed sensor are installed correctly.
ABS sensor clearance:
Front: 0.9 - 1.4 mm (0.035 - 0.055 inch)
Rear: 0.7 - 1.2 mm (0.028 - 0.047 inch)
NOTE:
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If clearance is narrow, adjust by using spacer (Part No. 26755AA000).
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If clearance is wide, check the outputted voltage then replace ABS sensor or tone wheel if the outputted voltage is outside the specification.
Output Voltage
Output voltage can be checked by the following method. Install resistor and condenser, then rotate wheel about 2.75 km/h (2 MPH) or equivalent.
NOTE: Regarding terminal No., please refer to item "ABS Sensor".
INSTALLATION
Front ABS Sensor
1. Install tone wheel on hub, then install housing on hub assembly.
