C100116 - TroubleshootingC100116-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
C100116	ECU voltage is too low (non-OBD related voltage monitoring fault)ECU电压过低(非OBD相关电压监控故障)	1. If the motor power supply is lower than 1.5V for more than 100ms, an error will be reported.1.电机供电低于1.5V超过100ms会报错

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 whether the integrated brake control unit wiring harness is damaged or broken.检查集成式制动控制单元线束是否存在损坏、断裂等现象。 3. Check whether the integrated brake control unit harness connector is damaged or has a loose connection.检查集成式制动控制单元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 12V battery voltage检查蓄电池电压
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. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.使用数字万用表测量蓄电池正、负极之间的电压。 Standard voltage value: about 12.5V标准电压值：约12.5V Are the test results normal?检查结果是否正常？ Yes是 Go to step 4.去步骤4。 No否 Go to step 3.去步骤3。
③Check DCDC output voltage检查DCDC输出电压
1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.使用数字万用表测量蓄电池正、负极之间的电压。 Standard voltage value: about 14V标准电压值：约14V Are the test results normal?检查结果是否正常？ Yes是 Charge the 12V battery and replace it if necessary.对蓄电池进行充电，必要时更换蓄电池。 No否 Inspect DCDC and its lines.检修DCDC及其线路。
④Check the integrated brake control unit power supply circuit检查集成式制动控制单元供电线路
	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.断开集成式制动控制单元线束接插件FB47。 3. Connect the negative terminal of the 12V battery and the power status is "ON".连接蓄电池负极，电源状态“ON”。 4. Use a digital multimeter to measure the voltage between pins 1/3/41 of FB47 and ground.使用数字万用表测量FB47的1/3/41号针脚与接地之间的电压。 Standard voltage value: about 14V标准电压值：约14V Are the test results normal?检查结果是否正常？ Yes是 Go to step 5.去步骤5。 No否 Inspect the power supply circuit of the integrated brake control unit.检修集成式制动控制单元供电线路。
⑤Replacing 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。