P160016 - TroubleshootingP160016-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
P160016	12V power supply voltage is low12V供电电压低	1. 12V battery loses power1.铅酸蓄电池亏电

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Power on the vehicle again and check whether the fault code and symptoms are eliminated.车辆重新上电，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 wiring harness and connectors检查线束及接插件

1. Power status 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 low-voltage wiring harness of the battery pack is damaged or broken.检查电池组箱低压线束是否存在损坏、断裂等现象。 3. Check whether the low-voltage wiring harness connector of the battery pack is empty or damaged.检查电池组箱低压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 3.去步骤3。 No否 Repair or replace faulty wiring harness or connector.维修或更换故障线束或接插件。

③Check 12V battery voltage检查蓄电池电压

1. Power status is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”,断开蓄电池负极。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正、负极之间的电压。 Standard voltage value: about 12.5V标准电压值：约12.5V Are the test results normal?检查结果是否正常？ Yes是 Go to step 5.去步骤5。 No否 Go to step 4.去步骤4。

④Check DCDC output voltage检查DCDC输出电压

1. The vehicle is powered on.车辆上电。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正、负极之间的电压。 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是 Charge the 12V battery and replace it if necessary.对蓄电池进行充电，必要时更换蓄电池。 No否 Inspect DCDC and its lines.检修DCDC及其线路。

⑤Check the power supply line of the battery pack检查电池组箱供电线路

1. Check whether the power supply line of the battery pack is short-circuited or open-circuited.检查电池组箱供电线路是否短路、开路。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 6.去步骤6。 No否 Repair or replace the battery pack power supply wiring harness.维修或更换电池组箱供电线束。

⑥Replace the battery pack assembly更换电池组箱总成

1. Replace the battery pack assembly with a new one and check whether the fault code and symptoms are eliminated.更换新的电池组箱总成，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 battery pack assembly, you need to use a diagnostic tool to recalibrate the battery pack assembly.更换电池组箱总成后，需用诊断仪对电池组箱总成重新标定。