P144662 - TroubleshootingP144662-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
P144662	P (Park) control request fails (EPB linkage model)P档控制请求失效（EPB联动车型）	1. The voltage signals of gear selection signal lines 0, 1, 2, and 3 are abnormal.1.选档信号线0、1、2、3电压信号异常

Troubleshooting steps故障诊断步骤

①General inspection一般检查

1. Padlock the P gear again and check whether the fault code and symptoms are eliminated.重新挂锁P挡，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。

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。