Subaru Impreza 2003 Service Manual page 2399

DIAGNOSTICS PROCEDURE WITHOUT DIAGNOSTIC TROUBLE CODE (DTC)
M: DTC 29
— ABNORMAL ABS WHEEL SPEED SENSOR (ABNORMAL ABS WHEEL
SPEED SENSOR SIGNAL) (ANY ONE OF FOUR) —
DIAGNOSIS:
• Faulty ABS wheel speed sensor signal (noise, irregular signal, etc.)
• Faulty tone wheel
• Wheels turning freely for a long time
TROUBLE SYMPTOM:
• ABS does not operate.
• EBD does not operate.
NOTE:
In addition to the ABS warning light, brake warning light illuminates.
ABS-59
ABS (DIAGNOSTICS)