B163271 - TroubleshootingB163271-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
B163271	Central control switch left rear window control switch short-circuited and stuck集控开关左后窗控制开关短路粘连	1. Abnormal switch wiring harness1.开关线束异常
		2. Abnormal switch2.开关异常

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 left front door central control switch wiring harness is damaged or broken.检查左前门集控开关线束是否存在损坏、断裂等现象。 3. Check whether the wiring harness connector of the left front door centralized control switch is damaged or has a loose connection.检查左前门集控开关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 the left front door centralized control switch and the left rear glass lifter control signal harness检查左前门集控开关左后玻璃升降器控制信号线束
	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 left front door control module harness connector FL16 and the left front door centralized control switch harness connector FL12.断开左前门控制模块线束接插件FL16和左前门集控开关线束接插件FL12。 3. Use a multimeter to measure the resistance between pin 19 of FL16 and pin 6 of FL12.使用万用表测量FL16的19号针脚与FL12的6号针脚之间的电阻。 Standard resistance value: <1标准电阻值：＜1Ω 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 the faulty wiring harness.维修或更换故障线束。
③Check the left front door centralized control switch检查左前门集控开关
1. Replace the left front door centralized control switch with a new one and check whether the fault code and symptoms are eliminated.更换新的左前门集控开关，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。
④Replace left front door control module更换左前门控制模块
1. Replace the left front door control module with a new one and check whether the fault code and symptoms are eliminated.更换新的左前门控制模块，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 left front door control module, you need to use a diagnostic tool to recalibrate the left front door control module.更换左前门控制模块后，需用诊断仪对左前门控制模块重新标定。