targa rouge

The replacement light switch wass received and installed today. As both reported, the problem was the main switch.

Thanks.

General knowledge:

The headlight main switch was removed from the dash.

The Part Number: LL/996.613.631.01 (Headlight Unit)

has an electric circuit with a 4 pins/cables connector attached to the unit.

Sorry. This was the way I write down all my e-mails. No "shouting", disrespect or anger were intended.

Thanks.

THE HEADLIGHT SWITCH HAS TWO MAIN COMPONENTS;

PART NUMBER: 996.613.535.00 (LIGHT SWITCH)

PART NUMBER: 996.613.631.01 /LL (HEADLIGHT UNIT)

HOW DO I TEST EACH ONE TO DETERMINE THE DAMAGE COMPONENT?

Hi.

How do I test the main light switch and the low/high lever switch to determine which has a problem.

The headlights low and high beams do not work on either side.

Hello.

Yes on both sides.

Are you refering to the main light switch or the low/ high switch at the steering column?

Is possible to have good voltage at the fuse +ve to ground (without the fuse install) and good voltage at the fender connector to ground (with the fuse install) and no voltage when the assembly is connected?

I'm discarding the headlights assemblies because both energize all bulb with th external 12v battery connected directly to the port on the assemblies connectors.

Hi.

My Porsche Targa Xenon (Litronic) headlights low and high beam (both sides) do not energize when install on the fenders bay.

Both assemblies were removed and energized using an external 12v battery connected as follows:

-for high beam: headlight assembly port 4 (+ve batt terminal) and port 6 (-ve batt terminal) [** the wiring diagram shows the port 12 as -ve but on the headlight assemblies were connected on port 6].

-for low beam: headlight assembly port 11 (+ve batt terminal) and assembly port 12 (-ve batt terminal).

Voltages, fuses, ground and cables continuity were checked. Voltage at the headlight fender connectors were 12.5 volt at

Low beam: port 11 as +ve and port 12 as -ve.

High beam: port 4 as +ve and port 6 as -ve.

The assemblies were connected (off the fender bay - were not installed). As soon as the +ve cable was connected from the fender connnector (using a jumper) to the port 4 on the assembly a drop on voltage occurs as if as ground as present. This did not happen when the assemblies were connected to the external 12v battery.

Any ideas?

OK folks....,

After many try i found the problem.....The problem is a faulty Headlight ballast.....

Thanks Loren

Robert

Hello. Both headlights has the same problem.

My Porsche is a 2003 Targa with Litronic Headlights. Low and High beam do not work when the assembly is install.

Nevertheless, the low beam light up when the assembly is off the base. Checked voltages, fuses and continuity.

How do you check the high beam ballast?

Victor

Thanks, that is my next task. I need to remove the front wheel and front fenders liners to have access from the connector and push forward toward the headlight assembly.

Nevertheless, the complete wiring diagram will be helpful for this and other issues.

Again, thanks for your help.

My Porsche Targa has electric problem with the high low beams.

I have checked the fuses,

the voltage to the +ve terminal for the fuses w/o the fuse in place,

the continuity of the -ve terminal of the fuses to the headlight assembly female connector at the car frame,

the voltages on the female connector with the light switch on and light (high/low) level nd

the ground continuity from the 1-12 ports on the female connector at the car frame to the main ground.

The problem with the power to the low or high beam continue.

I need the wiring diagram for this car to solve the problem or if someone know a web page tha t can give me some ideas.

Thanks.