P143509 - TroubleshootingP143509-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
P143509	Abnormal status of cruise button巡航按钮状态异常	1. Cruise button failure, wiring harness failure or interface failure1.巡航按钮故障、线束故障或接口故障

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 whether the combined switch and clock spring assembly wiring harness is broken or damaged.检查组合开关与时钟弹簧总成线束是否存在断裂、损坏等现象。 3. Check whether the combination switch and clock spring assembly wiring harness connectors are connected or damaged.检查组合开关与时钟弹簧总成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 combination switch and clock spring assembly检查组合开关与时钟弹簧总成

1. Power status "OFF".电源状态“OFF”。 2. Connect the diagnostic tool.连接诊断仪。 3. Power status "ON".电源状态“ON”。 4. Use a diagnostic tool to check whether the combination switch and clock spring assembly are normal.用诊断仪检查组合开关与时钟弹簧总成是否正常。 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 Inspect the combination switch and clock spring assembly.检修组合开关与时钟弹簧总成。

③Replace vehicle controller更换整车控制器

1. Replace the vehicle controller with a new one and check whether the fault code and symptoms are eliminated.更换新的整车控制器，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 vehicle controller, you need to use a diagnostic tool to recalibrate the vehicle controller.更换整车控制器后，需用诊断仪对整车控制器重新标定。