Troubleshooting › Brake control system › Diagnosis
C113009-故障诊断 · T00607757

 C113009 - TroubleshootingC113009-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
C113009
Switch failure开关故障
1. The switch state is unstable; the main microcontroller cannot recognize the switch state normally.1.开关状态不稳定；主单片机无法正常识别开关状态
Troubleshooting steps故障诊断步骤
①General inspection一般检查
1. Power status 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 combined switch and clock spring assembly wiring harness is damaged or broken.检查组合开关与时钟弹簧总成线束是否存在损坏、断裂等现象。
3. Check whether the wiring harness connector of the combination switch and clock spring assembly is damaged or has a loose connection.检查组合开关与时钟弹簧总成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。
②Power 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 3.去步骤3。
③Check the combination switch and clock spring assembly wiring harness检查组合开关与时钟弹簧总成线束
Graphic
1. Power status 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 combination switch from the clock spring assembly harness connector IP31 and the electronic parking control unit harness connector BD92.断开组合开关与时钟弹簧总成线束接插件IP31和电子驻车控制单元线束接插件BD92。
3. Use a digital multimeter to measure the resistance between pins 9/10/11/12 of IP31 and pins 6/27/28/7 of BD92.用数字万用表测量IP31的9/10/11/12号针脚与BD92的6/27/28/7号针脚之间的电阻。
Standard resistance value: <1标准电阻值：＜1 Ω
Graphic
d. Use a digital multimeter to measure the resistance between pins 6/27/28/7 of BD92 and ground.d.用数字万用表测量BD92的6/27/28/7号针脚与接地之间的电阻。
Standard resistance value: >1M标准电阻值：＞1M Ω
Graphic
e. Connect the negative terminal of the 12V battery, and the power status is "ON".e.连接蓄电池负极，电源状态“ON”。
f. Use a digital multimeter to measure the voltage between pins 6/27/28/7 of BD92 and ground.f.用数字万用表测量BD92的6/27/28/7号针脚与接地之间的电压。
Standard voltage value: 0V标准电压值：0V
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 Repair or replace the faulty wiring harness.维修或更换故障线束。
④Replace the combination switch and clock spring assembly更换组合开关与时钟弹簧总成
1. Replace the combined switch and clock spring assembly with a new one, and check whether the fault code and symptoms are eliminated.更换新的组合开关与时钟弹簧总成，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 5.去步骤5。
⑤Replace electronic parking control unit更换电子驻车控制单元
1. Replace the electronic parking control unit with a new one and check whether the fault code and symptoms are eliminated.更换新的电子驻车控制单元，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 electronic parking control unit, you need to use a diagnostic tool to recalibrate the electronic parking control unit.更换电子驻车控制单元后，需用诊断仪对电子驻车控制单元重新标定。