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ABS ABS ABS ABS Anti-lock Anti-lock Anti-lock Anti-lock Brake Brake Brake Brake System System System System 85 Diagnosis Diagnosis Diagnosis Diagnosis and and and and Testing Testing Testing Testing Fault symptom table If fault occurs without fault memory during DTC reading, please check relevant circuits of each fault symptom in Attention: Attention: Attention: Attention: Before maintenance of ABS, please ensure the conventional brake system operates normally. When the replacement of ABS hydraulic governor with ECU, sensors or other components is necessary, please turn Fault Symptom Check Areas ABS failed to operate 1. Check if ABS and EBD warning lamps are lit; 2. Read DTC and check for any fault; 3. Check power UZ circuit of ignition switch; 4. Check brake line for any leak. ABS poor effect 1. Read DTC and check for any fault; 2. Check brake line for any leak; 3. Apply diagnostic instrument to read “occupied state of hydraulic governor”; 4. Check the power supply state of battery; 5. Ensure the mounting bracket is fixed at normal state (at this time the driving comfort may decrease). Abnormal ABS and EBD 1. Read DTC and check for any fault; 2. Check the circuits of ABS and EBD warning lamps; 3. Check power UZ circuit of ignition switch; 4. Check the power supply state of battery; Diagnostic instrument failed to read DTC 1. Check if ABS and EBD warning lamps are lit; 2. Check the power line and ground cable of ABS hydraulic governor with ECU; 3. Check power UZ circuit of ignition switch; 4. Check the power supply state of battery; 5. Check the DIAGK cable of ABS hydraulic governor with ECU; 6. Check the diagnostic instrument for reliable connection. |