Nissan pickup I shut off the pickup the left low beam stayed on I bought a headlight/turn signal switch everything works now except the left low beam will not come on

https://search.yahoo.com/search?fr=mcafee&type=E210US1494G0&p=2004+Buick+Rainier+no+low+headlight+beams+not+working

Possible the headlight/dimmer switch is bad. Should be part of the turn signal switch assembly. Try moving the switch back and forth many times to see if the connection is bad.

The headlamps may be turned ON in 2 different ways. First, when the driver places the headlamp switch in the HEADLAMP position, for normal operation. Second, with the headlamp switch placed in the AUTO position, for automatic lamp control (ALC). During ALC the headlamps will be in DRL operation in daylight conditions, or headlamp operation in low light conditions.
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn OFF the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until turned OFF or the battery runs dead.

Low Beams - Standard
The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block.


Do you know how to test electrical circuit's - relay's ? How to use a digital voltmeter ?

Could be a defective headlight relay, Located in the fuse block in engine compartment,

one the your light bulbs have a broken contact or the ground shorted out

If you have separate bulbs for the low and high beams(4 light system), if you pull the turn signal and hold it, all 4 lights will stay on until you release the turn signal. You need to replace the bright bulb on the right side and the low bulb on the left side. If your headlights only have one bulb on each side, then you will have to replace both of them to get everything to work.

Hello. Generally when this happens, the high-low beam switch has gone bad and needs to be replaced. If you are handy you can do this your self. Otherwise, any autoelectric repair shop is your best bet. J.

What you have sounds like a Headlight SWITCH Problem, You can check the Fuse for them (DOUBTFULL) but its a Large one @ Power distribution Box Under Hood.

You probably have a faulty sentinel switch. It's supposed to shut off, has a bult in elctronic timer. Does it even have the sentinel switch?

have you looked into the relay?

I found the problem was with the headlight switch. I took the housing off and inspected the contacts for the light switch. Over the years the dielectric grease was causing the hi beam post to get stuck enough to make a hi resistance connection. Once the truck warmed up the grease on the post, it would slide back into the "off" position. I cleaned up the plastic and relubed it. All is well and my buddy is happy he didn't bring it to Nissan who quoted him $120.00 to fix it.