C003411 - TroubleshootingC003411-故障诊断

Fault code description故障码说明

DTC故障码(DTC)	Fault code description故障码描述	Possible cause of failure可能故障原因
C003411	Right front wheel speed circuit failure---open/grounded右前轮轮速电路故障---开路/接地	1. The right front wheel speed sensor signal line or power supply line is short-circuited to ground.1.右前轮速传感器信号线或供电线与地短接

Troubleshooting steps故障诊断步骤

①General inspection一般检查
1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Check the right front in-line wheel speed sensor wiring harness for damage, breakage, etc.检查右前直插式轮速传感器线束是否存在损坏、断裂等现象。 3. Check the right front direct-plug wheel speed sensor wiring harness connector for damage, loose connection, etc.检查右前直插式轮速传感器线束接插件是否存在损坏、虚接等现象。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 2.去步骤2。 No否 Repair or replace faulty wiring harness or connector.维修或更换故障线束或接插件。
②Check the right front in-line wheel speed sensor circuit检查右前直插式轮速传感器线路
	1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Disconnect the integrated brake control unit harness connector FB47 and the right front in-line wheel speed sensor harness connector FB31.断开集成式制动控制单元线束接插件FB47和右前直插式轮速传感器线束接插件FB31。 3. Use a digital multimeter to measure the resistance between pin 35/20 of FB47 and pin 1/2 of FB31.使用数字万用表测量FB47的35/20号针脚与FB31的1/2号针脚之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω
	d. Use a digital multimeter to measure the resistance between pin 35/20 of FB47 and ground.d.用数字万用表测量FB47的35/20号针脚与接地之间的电阻。 Standard resistance value: >1M标准电阻值：＞1M Ω Are the test results normal?检查结果是否正常？ Yes是 Go to step 3.去步骤3。 No否 Repair or replace the faulty wiring harness.维修或更换故障线束。
③Replace the right front in-line wheel speed sensor更换右前直插式轮速传感器
1. Replace with a new right front in-line wheel speed sensor and check whether the fault code and symptoms are eliminated.更换新的右前直插式轮速传感器，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Go to step 4.去步骤4。
④Replacing the integrated brake control unit更换集成式制动控制单元
1. Replace with a new integrated brake control unit and check whether the fault code and symptoms are eliminated.更换新的集成式制动控制单元，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Look for causes from other symptoms.从其他症状查找原因。   Caution:注意： ♦  After replacing the integrated brake control unit, you need to use a diagnostic tool to recalibrate the integrated brake control unit.更换集成式制动控制单元后，需用诊断仪对集成式制动控制单元重新标定。 ♦  After replacing the integrated brake control unit, the brake line bleeding operation is required.更换集成式制动控制单元后，需进行制动管路排气操作。