Head Light Module - hi beam not working

[crawal]

I have a left hand hi beam not working . The RH side is ok , all the fuses are ok
The auto elec before he starts pulling the car apart want to check the headlight module .
Any hints on where it is hiding ?

[Graeme]

If its bi-xenon then the cause is likely to be a sticky flap inside the bi-xenon assembly, in which case change beams rapidly many times to see if it starts working again.

[rufusking]

The headlights are controlled via the Central Junction Box (the fuse panel assembly behind the glove box). There's not a lot that can be replaced or fixed on it apart from the obvious fuses and relays. There's a fair bit of stuff behind it.

Bit of background info required:
Model, Year, Trim level, Halegon / Xenon, Adaptive lights etc

From the workshop manual:

"CENTRAL JUNCTION BOX
The CJB is located behind the glove compartment and is connected to the vehicle wiring harness with 8 multiplugs.
The CJB receives four permanent battery power supplies via the Engine Junction Box (EJB).
The lighting circuits are not all protected by conventional fuses as some are protected by MOSFET's. The control circuitry within the CJB for each individual circuit can detect and isolate a problem circuit.
Failure of a lamp is not notified to the driver. If a turn signal indicator fails the turn signal warning indicator in the instrument cluster will flash at double speed.
Input Signals for Lamp Control
The CJB receives inputs from the following switches:
Lighting control switch for side lamps, headlamps and auto headlamps (if fitted)
Momentary push switches for front and rear fog lamps
Left hand steering column multifunction switch for turn signal indicators and high beam/headlamp flash and Auto
High Beam system
Brake pedal switch
Momentary push switch for hazard warning.
The switches are supplied with a 10mA supply from the CJB and switch to ground when operated. The CJB detects that a switch has been operated (ON) when its closing resistance is less than 100 Ohm and is detected as OFF when its resistance is more than 10K Ohm."

[crawal]

Rufusking, thanks for that info .I have passed that onto the auto elec , how can he check the module to try to find the fault .