Automotive electrical maintenance does not work lamp lighting maintenance experience summary

First, the extinguisher does not work (no fire or no flame)

1. First check if the plug of the extinguisher is plugged in, and if it is loose.

2. Check that the insurance is intact.

3. Check the extinguisher plug (the key to the 3rd speed indicator lamp is on). The white line and the gray red line should be live. If the black line is not electrified, the extinguisher should be judged as bad.

4. Check if there is misalignment and loosening at the big line bag.

Second, the speaker does not ring

1. Determine the area by first pressing the horn to see if the relay is engaged.

2. In the case of suction: Check if there is loose or misalignment in the big bag. Check switch with switch is inserted.

3. In the case of non-suction: Check whether the insurance is intact, check whether the steering column horn switch line is plugged in, and check whether the relay is normal (can be exchanged with other relays of the power distribution box for detection).

Third, fog lights do not work

1. Divide the area by pressing the front fog light switch to see if the relay is engaged.

2. Relay pull-in: Check if the fog light switch wire is inserted incorrectly (front and rear fog light wire plugged in reverse) Check the thread end. The front fog lamp has two green and white charged, one blue line is charged, and black is the ground wire. After the fog lamp switch, green and white lines charged, other no electricity, to determine whether the switch is damaged.

3. The relay does not pull in: Check if the insurance is intact and check that the relay is working properly (can be interchanged with other relays).

Four, ceiling light / profile light does not shine

If the ceiling light is not bright, check whether the insurance is intact, and then see if there is a burning section of the ceiling light. Check if the back of the box is connected without burning the section. A test light can first check whether the red line on the ceiling light has electricity and whether the black wire is grounded. The next step is to check the debris box.

1. Divide the area by observing the top light's bright light and door light files. The position light is defined by the bilateral light off and unilateral light off.

2. The ceiling light is not on or off. Check the insurance ------ Check the four-way plug (at the right side of the worktable box) ---- check the lamp.

3. The top light is always off. Check the four-way plug ------ check the light bulb - iron nails hit the iron situation - through a short to check whether the bad contact.

4. The top light door light is off. Check the four-way plug (workbench, lower left) -------- the right side of the worktable, the four-way plug -------- top light bulb --- by shorting to check for poor contact.

5. The profile light does not shine on both sides. Check the four-pin plug on the right side of the workbench---check the lamp.

6. The ceiling light does not shine on one side. Check the lamp ----- check the lamp plug.

Fifth, the brake light does not shine.

1. Both sides are not bright. Check insurance. Check whether the brake light switch is plugged in. Short-circuit the brake light switch line to determine whether the switch has failed. Check whether the large-area packet cable is plugged in. Check that the control box (left side of the workbench) is plugged in.

2. Unilateral light. Interchange the taillight plug to determine the fault scope. If the taillights are in good condition, check the plug of the large wire harness and control box is plugged in.

Sixth, the reverse lamp does not work.

Check the reverse switch (on the gearbox) to determine if the switch is good or bad by shorting it. "Is the insurance in good condition?"

VII. Deputy start does not work.

1. Check the sub-start switch (on the gearbox).

2. Check the sub-start button (on the gantry support).

3 check the insurance.

Eight, the wiper does not spray water.

1. First, listen to the working condition of the wiper spray motor (bottom right of worktable) to judge the fault area.

2. When the kettle motor works, check whether the water is in the kettle. Then check whether the water pipe is folded and pressed.

3. When the kettle motor is not working, check if the motor cable plug is inserted.

4. Check the insurance and check that the wire plug at the combination switch is plugged in.

9. The warm wind does not work.

1 First check that the insurance is intact and the relay is working. (Can be interchanged with other relays to confirm the relay is intact).


2 Check if the heater plug (after the workbench right box) is plugged in.

3 Check if the back of the heater switch is plugged in.

Ten, double flash, turn signal does not work.

1. Double flash, if the turn signal is not working, check the insurance and check if the flash relay is plugged in (conditionally can be interchanged with other vehicles) to judge whether the relay is in good condition.

2 Check whether the dual flash switch is plugged in (if possible, interchangeable with other vehicles) to judge whether the switch is in good condition.

3 If the turn signal does not work, check whether the wire end of the combination switch is inserted.

11. Miles do not work.

1, first check whether the plug is plugged.

2, check whether the line package is playing.

3, check whether the plug behind the instrument line off.