Impreza F4-2.5L SOHC (2003)
1) Check the pole piece of the ABS sensor for foreign particles or damage. If necessary, clean the pole piece or replace the ABS sensor.
2) Measure the ABS sensor resistance.
CAUTION:
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If resistance is outside the standard value, replace the ABS sensor with a new one.
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Check the marks on the harness to make sure that no distortion exists.
RH: Light blue
LH: Brown
NOTE: Check the ABS sensor cable for discontinuity. If necessary, replace with a new one.
SENSOR GAP
Clearances (sensor gaps) should be measured one by one to ensure the tone wheel and speed sensor are installed correctly.
NOTE:
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If clearance is narrow, adjust by using the spacer (Part No. 26755AA000).
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If clearance is wide, check the outputted voltage then replace the ABS sensor or tone wheel if the outputted voltage is outside the specification.
ABS sensor clearance: 0.7 - 1.2 mm (0.028 - 0.047 inch)
OUTPUT VOLTAGE