Question about 2004 Land Rover Discovery

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DASH LIGHTS DIM WHEN BRAKE OR LEFT BLINKER APPLIED

2004 DISCOVERY II WITH 43K

WHEN THE TURN SIGNAL LIGHTS ARE ON "0" POSITION AND THE BRAKE IS PUSHED OR THE LEFT TURN SIGNAL IS USED EVERY LIGHT IN THE CAR DIMS.

WHEN THE TURN SIGNAL LIGHT ARE SET TO "1" OR "2" ALL THREE LEFT MARKER LIGHTS IGNITE AND WON'T TURN OFF. DASH LIGHTS DO NOT DIM ON THESE TWO SETTINGS.

PLEASE HELP! THANK YOU!

GRAHAM


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  • graham417 Jan 19, 2009

    Tried inspecting/changing most bulbs. Ended up having to take it to the shop. Took a while for them to diagnose the problem but finally found the problem to be a short in the trailer wiring harness. Once they replaced that one part everything was back to normal.

  • Anonymous Mar 16, 2014

    1994 pick up when hit brake blinker on dash comes on ,left turn signal both blinkers come on

  • Anonymous Mar 23, 2014

    turn on the ignition all dash lights come on except the battery light is now dim

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Pull the bulb out of both left side turn signals and check the filaments. As these are double filament bulbs, sometimes the filaments break and lay across the other creating a feedback issue.

Posted on Jan 15, 2009

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Posted on Jan 02, 2017

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08 Buick lucerne cxl. Third brake light works as well as front signal lights. No rear brake lights or turn signals. Tail lights and headlights and third brake lights works. Bulbs good. Help


Stop Lamps
The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The body control module (BCM) provides a 5-volt reference voltage and low reference to the brake pedal position sensor. The position sensor provides an analog voltage signal back to the BCM that will increase as the brake pedal is applied. When the brake is applied, the BCM will then apply battery voltage to the left and right stop/turn signal lamp supply voltage circuits and the center high mounted stop lamp (CHMSL) supply voltage circuit illuminating the stop lamps. At the same time the BCM applies battery voltage through the signal circuit to the transmission control module (TCM) and the engine control module (ECM) indicating that the brakes are applied.
Ground for the stop lamps is supplied as follows:
• G402 provides ground for the left rear stop/tail/turn signal lamps
• G403 provides ground for the right rear stop/tail/turn signal lamps
• G301 provides ground for the CHMSL
The stop lamps on this vehicle will not illuminate unless the ignition is in the accessory, run, or crank positions. When the ignition is in the OFF position the stop lamps will not illuminate when the brake pedal is applied.
Battery voltage from the LT TRN/SIG and RT TRN/SIG fuses located in the rear fuse block is also used by the body control module (BCM) for stop lamp operation.

Turn Signal Lamps
Battery voltage supplied to the body control module (BCM) from the fuses listed below is used for turn signal and hazard lamp operation.
• LT TRN/SIG fuse for the left turn signals
• CTSY/RF TRN fuse for the right front turn signal
• RR TRN/SIG fuse for the right rear turn signal
When the turn signal switch is place in either the LEFT or RIGHT position, ground from G300 is applied through the turn signal switch signal circuit to the BCM indicating the turn signal request. In response to this signal, the BCM applies a pulsating voltage to the front and rear turn signal lamps supply voltage circuits cycling the lamps ON and OFF. At the same time the BCM sends a GMLAN serial data message to the instrument panel cluster (IPC) to cycle the appropriate turn signal indicator ON and OFF.
Ground for the turn signal lamps is supplied as follows:
• G104 provides ground for the left and right front turn signal lamps
• G402 provides ground for the left rear stop/tail/turn signal lamps
• G403 provides ground for the right rear stop/tail/turn signal lamps

Do you have a factory scan tool (tech2) ? Your best bet , take it to the dealer .

Sep 08, 2017 | Buick Cars & Trucks

1 Answer

Lights dim


Was any of the brake light bulbs changed recently, the wrong type of bulb may be used causing a short in the socket, and making the rest of the brake and signal circuit malfunction. I no bulbs were recently replaced, start with checking for corrosion in each bulb socket, signal and brake bulb sockets. Let us know what you find

Mar 26, 2014 | 2004 Honda Pilot

3 Answers

Tail lights are not working correctly


I have to believe that with all of the "non related" issues happening that there is a wiring harness problem. If you track the harness back from the tail lights you will probably find a nick or a break in the line. If nothing shows then check the connection point which should be somewhere around your fuel tank. It will be a male/female fitting that will pull apart and you can check at that point with a meter if it is working to that point. If not it then you will have to work your way all the way up to find the fault point.

Feb 12, 2014 | 2004 GMC Canyon

1 Answer

2009 Impala rear lights not working


Turn Signal Lamps
The LT T/SIG and RT T/SIG fuses located in the underhood fuse block supplies battery positive voltage to the body control module (BCM) for turn signal and hazard lamp operation. When the turn signal switch is place in either the LEFT or RIGHT position, ground from G202 is applied through the turn signal switch signal circuit to the BCM indicating the turn signal request. In response to this signal, the BCM applies a pulsating voltage to the front and rear turn signal lamps supply voltage circuits cycling the lamps ON and OFF. The BCM also sends a message via GMLAN to the instrument panel cluster (IPC) to cycle the turn signal indicator ON and OFF depending on the position of the turn signal switch.
Ground for the turn signal lamps is supplied as follows:
• G101 provides ground for the left front turn signal lamp
• G100 provides ground for the right front turn signal lamp
• G302 provides ground for the left and right rear turn signal lamps

The LT T/SIG and RT T/SIG fuses located in the underhood fuse block are also used by the body control module (BCM) for stop lamp operation.
The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The body control module (BCM) provides both, a 5-volt reference voltage and low reference to the brake pedal position sensor. The position sensor provides an analog voltage signal back to the BCM that will increase as the brake pedal is applied. When the brake pedal is applied, the BCM will then apply battery voltage to the left and right stop lamp supply voltage circuits and the center high mounted stop lamp (CHMSL) supply voltage circuit illuminating the stop lamps. At the same time the BCM signals the transmission control module (TCM) and the engine control module (ECM) that the brakes are applied. Ground for all stop lamps is provided at G302.
The stop lamps on this vehicle will not illuminate unless the ignition is in the accessory, run, or crank positions. When the ignition is in the OFF position the stop lamps will not illuminate when the brake pedal is applied.

Did you check the fuse's. ? Wouldn't think it's a ground because right an left tail lamp Assembly's use same ground ! Did you check for B+ voltage at the bulb. with a volt meter ? Power is supplied by the BCM . Could be the tail lamp assembly

Jul 19, 2017 | Cars & Trucks

1 Answer

I HAVE A 2005 SILVERADO AND WHEN I PUT ON MY SIGNAL LIGHTS RIGHT OR LEFT SIDE BOTH SIDES FLASH VERY DIM AT THE SAME TIME. IF I APPLY THE BRAKE WHILE THE SIGNAL LIGHTS ARE ON THE LIGHTS ALL GO OUT AND STOP...


More than likely a bad ground in the wiring harness's. Have you changed your transmission, Alternator, or starter? Or added a trailer plug on the bumper?

Jun 20, 2011 | 2005 Chevrolet Silverado

1 Answer

Signals and brake lights dim when brakes applied


it could be a bad connection in the stoplight wiring most likely the earth wire check all the wiring connectors to make sure they are plugged in properly.....hope this helps.....cheers

Jul 09, 2010 | 2004 Chevrolet Silverado

1 Answer

I have a 2004 jeep wrangler the running lights come on and dirrectionals come on also, after checking fuse's and bulbs and replacing brake switch,i still have no brake lights,can someone help me


you have a bad ground the brake light are independent of the rest of the lights if the turn signals work and the brake lights don't you have a bad ground blowen fuse or your turn signals are not grounded properly so the turn signal lights may be dim or erritic in nature you can also check the blinker switch for it can be shorted (remember that there are two 1 for the turnsignals & 1 for the fourway flashers

Mar 09, 2010 | 2004 Jeep Wrangler

2 Answers

NO LEFT SIDE TAIL ,STOP OR BLINKER REAR LEFTLIGHT


did you try to replace the bulb in the back normally when it blinks fast like that its just the bulb and its doulbe film thats why the brake and blinker dont work

Dec 19, 2009 | 2004 Jeep Grand Cherokee

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