Troubleshooting › Cooling system › Diagnosis
B1CA011-故障诊断 · T00677508

 B1CA011 - TroubleshootingB1CA011-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
B1CA011
ITS thermal management accessory power supply short circuit to groundITS热管理附件供电短路到地
1. Thermal management accessory relay failure1.热管理附件继电器故障
2. Thermal management accessory wiring harness failure2.热管理附件线束故障
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 ITS thermal management accessory wiring harness for damage, breakage, loose connection, etc.检查ITS热管理附件线束是否存在损坏、断裂、虚接等现象。
3. Check the ITS thermal management accessory wiring harness connector for loose connections or damage.检查ITS热管理附件线束接插件是否存在虚接、损坏等现象。
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 ITS Thermal Management Accessory Relay检查ITS热管理附件继电器
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. Open the electrical box in the front compartment and check whether the ITS thermal management accessory relay is normal.打开前舱电器盒，检查ITS热管理附件继电器是否正常。
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 Replace the relay with the same specification.更换相同规格的继电器。
③Check ITS thermal management accessory wiring检查ITS热管理附件线路
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. Check whether the ITS thermal management accessory circuit is short-circuited to ground.检查ITS热管理附件线路是否对地短路。
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 ITS thermal management accessory wiring harness.维修或更换ITS热管理附件线束。
④Replacing the thermal management integrated module更换热管理集成模块
1. Replace the thermal management integrated module with a new one and check whether the fault code and symptoms are eliminated.更换新的热管理集成模块，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 thermal management integrated module, you need to use a diagnostic instrument to recalibrate the thermal management integrated module.更换热管理集成模块后，需用诊断仪对热管理集成模块重新标定。