B2CA012 - TroubleshootingB2CA012-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
B2CA012	The left support rod is short-circuited to the electricity左撑杆短路到电	1. There is a short circuit at the power end of the electric support rod output of the electric hatchback door module.1.电动掀背门模块输出电撑杆电源端对电短路

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 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 the electric liftgate drive lever harness for damage, breakage, etc.检查电动掀背门驱动杆线束是否存在损坏、断裂等现象。 3. Check the electric hatchback door drive lever harness connector for damage, loose connection, etc.检查电动掀背门驱动杆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。
③Check the electric liftgate drive lever power terminal wiring harness检查电动掀背门驱动杆电源端线束
	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 power liftgate drive lever harness connector BD96 and the power liftgate module harness connector BD90.断开电动掀背门驱动杆线束接插件BD96和电动掀背门模块线束接插件BD90。 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 pin 2 of the BD96 and ground.使用数字万用表测量BD96的2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。
④Replacing the power liftgate module更换电动掀背门模块
1. Replace the electric hatchback door module with a new one and check whether the fault code and symptoms are eliminated.更换新的电动掀背门模块，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 electric liftgate module, you need to use a diagnostic tool to recalibrate the electric liftgate module.更换电动掀背门模块后，需用诊断仪对电动掀背门模块重新标定。