Same in the 2024 and 2025-refresh wiring diagrams.

Troubleshooting故障检查

1. Voltage detection1. 电压检测

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Voltage detection is to check whether there is voltage at a certain point. When checking a certain terminal of the wire connector, you can use the positive connecting wire probe in the line inspection tool to insert it from the back of the wire connector without disassembling the wire connector.电压检测是检查某一点是否有电压。当检查导线接头的某一个端子时，可以不分解导线接头，利用线路检测工具中的正极连接线探针从导线接头的背面插入进行测试。

When checking the voltage with a test lamp or voltmeter, first connect the negative terminal of the test tool to the negative terminal of the 12V battery.用试灯或电压表检查电压时，先把检测工具的负极与蓄电池负极相连接。

Then connect the other end of the test lamp or voltmeter wire to the location to be tested.然后把试灯或电压表的另一端导线连接到要检测的位置上。

If the testing tool is a voltmeter and the displayed value is less than the specified value by more than 1 V, it indicates that the circuit is faulty. If the test tool is a test lamp, if the test lamp cannot light up normally, it means that the circuit is faulty.如果检测工具是电压表，显示值比规定值小于1 V 以上，说明电路有故障。如果检测工具是试灯，试灯不能正常点亮说明电路有故障。

2. Power on test2. 通电测试

1 Disconnect the negative 12V battery harness.断开蓄电池负极线束。

2 Connect one lead from a self-powered test lamp or resistance meter to the component to be tested. When using a resistance meter, first short-circuit the two wires of the resistance meter and use a zero adjuster to zero the resistance meter.用自带电源测试灯或电阻表的一根引线连接到需检测的部件上。使用电阻表时，先把电阻表的两根导线短接，用调零器把电阻表调零。

3 Connect the other lead of the detector to the other terminal of the load to be tested.用检测仪的另一导线连接到要检测的负载另一端子上。

4 The built-in power test light is on, indicating continuity; when using an resistance meter, the resistance is very small or close to 0Ω, indicating that the component has good conduction status.自带电源试灯亮，表示导通；使用电阻表时，电阻很小或接近0Ω，表示该部件具有良好的导通状态。

3. Short circuit test3. 短路测试

1 Disconnect the negative 12V battery harness.断开蓄电池负极线束。

2 Connect one of the wires from the self-powered test light or ohmmeter to the output terminal of the fuse.把自带电源测试灯或电阻表的一根导线连接到保险丝的输出端子上。

3 Connect the other lead of a self-powered test lamp or ohmmeter to ground.把自带电源的测试灯或电阻表的另一导线接地。

4 Disconnect the fuse from all associated electrical loads.断开保险丝所有相关的电气负载。

Warning:警告：

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If all the electrical loads of the fuse are not disconnected, the resistance meter will always show low resistance when checking low-resistance load circuits such as lights, which may cause misjudgment.如果不断开该保险丝所有的电气负载，在检查灯光等低电阻负载电路时，电阻表会一直显示低电阻，这种情况下会引起误判。

5 Check the wiring from the point closest to the fuse.从保险丝最近处依次排查线路。

6 The built-in power test light is on or the resistance meter displays a value below 5Ω, indicating that this part is short-circuited to ground.自带电源试灯亮或电阻表显示值低于5Ω，说明这部分与接地短路。

4. Voltage drop test4. 电压降测试

1 Connect the positive voltmeter lead to the end of the wire closest to the 12V battery (connector side or switch side).电压表正极导线连接到接近蓄电池的导线的一端( 接头侧或开关侧)。

2 Connect the negative voltmeter lead to the other end of the wire (other side of the connector or switch).电压表负极导线连接到导线的另一端(接头或开关的另一侧)。

3 Open or engage the switch to make the circuit work.断开或接合开关，使电路工作。

4 A voltmeter will show the voltage difference between two points.电压表将显示两个点之间的电压差。

5 If the voltage difference exceeds 0.1 V (less than 50mV for a 5 V circuit), it can indicate a fault in the circuit. Check the circuit for loose, oxidized, or corroded connections.如果电压差超过0.1 V (5 V 电路应小于50mV)，可以表明电路上有故障，检查松动、氧化或腐蚀的连接电路。