B163471 - TroubleshootingB163471-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
B163471	Rear door window local switch stuck后门车窗本地开关粘连	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 (take the left front door control module failure report as an example)一般检查(以报左前门控制模块故障为例)
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 left rear door glass lift switch wiring harness for damage, breakage, etc.检查左后门玻璃升降器开关线束是否存在损坏、断裂等现象。 3. Check the left rear door glass lift switch wiring harness connector for damage, loose connection, etc.检查左后门玻璃升降器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 left rear door glass regulator switch wiring harness检查左后门玻璃升降器开关线束
	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 rear door glass lift switch harness connector RL03.断开左前门控制模块线束接插件FL16和左后门玻璃升降器开关线束接插件RL03。 3. Use a multimeter to measure the resistance between pin 17/33 of FL16 and pin 3/5 of RL03.使用万用表测量FL16的17/33号针脚与RL03的3/5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 left rear door glass regulator switch检查左后门玻璃升降器开关
1. Replace the left rear door glass lift switch with a new one and check whether the fault code and symptoms are eliminated.更换新的左后门玻璃升降器开关，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。