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5A4-62 ABS/ASR List of Trouble Symptom Troubles not appeared as warning lamp indication can 1. The ABS operates frequently but brake force is in- sufficient, or the ASR operates frequently. 2. The ABS operates but pulling to one side. 5. Brake operating noise comes from the EHCU though the brake pedal is not depressed. Self-diagnosis function is unable to detect these symp- Check the trouble symptom by reproducing the condi- 17 Replace the EHCU. Is this step completed? — — 18 1. Install all the components, and check that those are installed properly. 2. Clear the DTC. Is this step completed? — Go to “Diagnostic basic flow”. Step Action Value YES NO No. Trouble symptom Diagnostic check flow Without Tech 2 With Tech 2 1 The ABS operates frequently but brake force is insuffi- Check flow A-1 Check flow TA-1 2 The ABS operates but pulling to one side. Check flow A-2 Check flow TA-2 3 Wheels are locked during brake operation. Check flow A-3 Check flow TA-3 4 Feeling of brake pedal is faulty. Check flow A-4 — 5 Brake operating noise comes from the hydraulic unit Check flow A-5 Check flow TA-5 |