|05-14-2010, 12:56 PM||#1 (permalink)|
Join Date: May 2010
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Highbeam Out message
Recently I had this message pop up. I checked my lights...low beams and high beams are working properly. However, the left turn and right turn indicators both stay lit on the dashboard and neither the right or left FRONT turn signals blinks. The back turn signals both work properly. You can still see that the front turn signal bulbs are still burning, but dimly...and the Highbeam Out message lights up when you turn on the car. The turn signal clicker clicks rapidly when the engine is on and in gear. I stopped at a parts store and installed a new front left turn signal bulb but the same problem persisted...neither the left or right turn signals worked...it was like I did nothing.
I took it to a mechanic and he said he hasn't seen anything like that particular problem before.
Can anyone shed some light on this before the mechanic starts his diagnosis.
. My car is a 2002 Impala V6..81,000 miles.
|03-14-2014, 05:20 PM||#5 (permalink)|
Looking at the electrical schematic for the high and low beam lights circuit, it appears to be connection problem, not necessarily the HIGH LOW switch. I traced the voltage through the head lamp assy, and it is correct, with the low side voltage going to the switch, which takes that voltage to low,,ground. The schematic shows that the body control module expects to see approx 12 volts on its terminal, HIGH BEAM IN. If this is not there, it appears to show that the high beam elements are both open, and would give a signal to the dash, HIGH BEAM OUT. If this is true, there would be no connection to the high, low switch to allow for it to connect the high beam light to ground , and there would be no high beam light turned on. IS THERE A CONNECTOR BETWEEN THE HEAD LIGHT ASSY AND THE LIGHT DIMMER SWITCH. I have looked on the 2004 impala and did not find it yet.
I had a simular problem on a 2000 impala and found a burnt connection under the steering column. I bypassed that burnt connection and the low beam worked as desired.
Just have not figured out the 2004 Impala yet.
Anyone have more experiance with the head lights.
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