The instrument cluster screen does not display组合仪表屏不显示

①Check the instrument panel for mechanical damage检查组合仪表屏机械损伤
1. Check the instrument panel screen for cracks, water ingress, damage, deformation, etc.检查组合仪表屏是否存在裂纹、进水、破损、变形等现象。 Are the test results normal?检查结果是否正常？ Yes → Go to step 2.是>>去步骤2。 No → Replace the instrument cluster screen.否>>更换组合仪表屏。
②Check the wiring harness connector检查线束接插件
1. Check whether the instrument cluster screen and the infotainment head unit wiring harness are damaged or broken.检查组合仪表屏和车载智能多媒体主机线束是否存在损坏、断裂等现象。 2. Check whether there are loose connections or damage to the instrument cluster screen and the infotainment head unit wiring harness connector.检查组合仪表屏和车载智能多媒体主机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 → Go to step 3.是>>去步骤3。 No → Repair or replace the faulty wiring harness or connector.否>>维修或更换故障线束或接插件。
③Check the vehicle infotainment head unit fault code检查车载智能多媒体主机故障码
1. Use the diagnostic tool to read the fault code of the infotainment head unit and check whether there is a fault in the infotainment head unit.使用诊断仪读取车载智能多媒体主机故障码，检查车载智能多媒体主机是否存在故障。 Are the test results normal?检查结果是否正常？ Yes → Go to step 4.是>>去步骤4。 No → Troubleshoot the fault of the vehicle-mounted intelligent multimedia host according to the fault code.否>>根据故障码排除车载智能多媒体主机故障。
④Check fuse检查保险丝
	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 fuse IF39 in the electrical box on the instrument panel is normal.检查仪表板电器盒中保险丝IF39是否正常。 IF39：7.5A Are the test results normal?检查结果是否正常？ Yes → Go to step 5.是>>去步骤5。 No → Replace the fuse with the same specification.否>>更换相同规格保险丝。
⑤Check the power line of the combined instrument panel检查组合仪表屏电源线路
	1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between pin 1 of the IP29 connector of the instrument panel harness and ground.用数字万用表测量组合仪表屏线束接插件IP29的1号针脚与接地之间的电压。 Standard voltage value: about 14V标准电压值：约14V Are the test results normal?检查结果是否正常？ Yes → Go to step 6.是>>去步骤6。 No → Repair or replace the power supply harness of the combined instrument panel.否>>维修或更换组合仪表屏电源线束。
⑥Check the instrument panel grounding circuit检查组合仪表屏接地线路
	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. Disconnect the instrument panel wiring harness connector IP29.断开组合仪表屏线束接插件IP29。 3. Use a digital multimeter to measure the resistance between pin 4 of the IP29 and ground.用数字万用表测量IP29的4号针脚与接地之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω Are the test results normal?检查结果是否正常？ Yes → Go to step 7.是>>去步骤7。 No → Repair or replace the instrument panel grounding harness.否>>维修或更换组合仪表屏接地线束。
⑦Check the instrument panel control signal circuit检查组合仪表屏控制信号线路
	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. Disconnect the instrument panel wiring harness connector IP29 and the vehicle infotainment head unit wiring harness connector IP55.断开组合仪表屏线束接插件IP29和车载智能多媒体主机线束接插件IP55。 3. Use a digital multimeter to measure the resistance between pin 5 of IP29 and pin 13 of IP55.用数字万用表测量IP29的5号针脚与IP55的13号针脚之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω Are the test results normal?检查结果是否正常？ Yes → Go to step 8.是>>去步骤8。 No → Repair or replace the instrument panel control signal wiring harness.否>>维修或更换组合仪表屏控制信号线束。
⑧Check the instrument cluster signal coaxial cable检查组合仪表信号同轴电缆线
	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 instrument panel wiring harness connector IP30 and the vehicle infotainment head unit wiring harness connector IP51.断开组合仪表屏线束接插件IP30和车载智能多媒体主机线束接插件IP51。 3. Use a digital multimeter to measure the resistance between pin 1/2 of IP30 and pin 3/7 of IP51.用数字万用表测量IP30的1/2号针脚与IP51的3/7号针脚之间的电阻。 Are the test results normal?检查结果是否正常？ Yes → Go to step 9.是>>去步骤9。 No → Replace the instrument cluster signal coaxial cable.否>>更换组合仪表信号同轴电缆线。
⑨Replace the instrument cluster screen更换组合仪表屏
1. Replace the instrument cluster screen with a new one and check whether the fault is eliminated.更换新的组合仪表屏，检查故障是否排除。 Are the test results normal?检查结果是否正常？ Yes → Fault resolved.是>>故障排除。 No → Find the cause from other fault symptoms.否>>从其他故障现象查找原因。