C15C000 - TroubleshootingC15C000-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
C15C000	EPB left caliper-passive failureEPB左卡钳-被动失效	1. The positive and negative poles of the left caliper motor are forced to apply voltage externally, resulting in a voltage difference between the positive and negative poles and causing the motor to rotate.1.左侧卡钳电机的正负极被外部强制施加电压，导致正负极存在压差并引起电机转动
		2.ECU internal fault2.ECU内部故障

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，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 2.去步骤2。

②General 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 motor-integrated left rear caliper wiring harness for damage, breakage, etc.检查电机集成式左后卡钳线束是否存在损坏、断裂等现象。 3. Check the motor-integrated left rear caliper harness connector for damage, loose connection, etc.检查电机集成式左后卡钳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 3.去步骤3。 No否 Repair or replace faulty wiring harness or connector.维修或更换故障线束或接插件。

③Replace the motor-integrated left rear caliper assembly更换电机集成式左后卡钳总成

1. Replace the motor-integrated left rear caliper assembly with a new one, and check whether the fault code and symptoms are eliminated.更换新的电机集成式左后卡钳总成，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。