![]() If the headlights did not come ON, then you have eliminated the headlight switch as bad.Īlthough it's beyond the scope of this article to test for a short in the wiring between the headlight switch and the headlights, this result tells you that there is an open-circuit problem in circuit G (yellow wire). If you'd like to save some bucks on the headlight switch, go to: Where To Buy The Headlight Switch And Save.ĬASE 2: The headlights DID NOT come ON. 2000 Toyota Avalon Fuse Box Schematic And Wiring Diagram. Taking the 3 results above into account, they tell you beyond a shadow of a doubt that the headlight switch is bad and needs to be replaced. On a 2006 Lincoln Navigator : The fuse panel and the power distribution box are. In this test step, when you manually jumpered circuits C and G the headlights came ON.In TEST 1, you confirmed that the headlight switch is getting power in circuit C.So far you have verified that when you turn ON the headlights (via the headlight switch), the headlights do not come ON.This tells you that the headlight switch is bad and needs to be replaced. The result that you should see is that the headlights should come ON.ĬASE 1: The headlights came ON. I recommend that you make your own fused jumper wire to use in this section but you don't have to. The next step now is to use a fused jumper wire to and manually jumper circuit G and circuit C together.Ĭircuit G is the Yellow wire sticking out of the headlight switch connector. So far in TEST 1, you have confirmed that there's battery voltage (10 to 12 Volts DC) in circuit C (circuit C is the red wire). TEST 2: Fused Jumper Wire (Headlight Circuit) This test result also tells you that the headlight switch is not bad since without power in this circuit, it can not turn on the headlights. If your multimeter still does not register battery voltage, then this tells you that the reason that the headlights are not coming ON when is a lack of power. The cause is the motors behind the gauges are failing, they all go out eventually. For this test, go to: TEST 2: Fused Jumper Wire (Headlight Circuit).ĬASE 2: The multimeter DID NOT register 12 Volts. This is very common on the 03-06 Silverados. The next step is bypass the headlight switch with a jumper wire and see if the headlights come on. This is the correct and expected test result and tells you that the circuit that controls the headlights (inside the headlamp dimmer switch does have power). Let's take a look at what your test results mean:ĬASE 1: The multimeter registered 12 Volts. ![]() Voltage should be present whether the key is in the ON position (in the ignition switch) or not. Factory diagrams are much harder to read.Your multimeter will register one of two things: battery voltage (12 Volts) or no voltage at all. offers redrawn diagrams as well as factory diagrams. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. If you’re tracking down a wiring issue, is the better choice. Get tips on blown fuses, replacing a fuse, and more. Highlighted the cigarette lighter fuse (as the most popular thing people look for). In most cases, their diagrams are right from the factory manuals. In this article you will find a description of fuses and relays Chevrolet, with photos of block diagrams and their locations. As the dimmer is turned up, voltage should increase, and as the dimmer is turned down, voltage should decrease. If the fuse looks good, use a test light or voltmeter to test for power on this fuse with the lights turned on. They include wiring diagrams and technical service bulletins. First, check the ILLUM fuse in the drivers side dash fuse panel.This is fuse 14 in the picture below. and are professional-grade shop manuals-period.
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