Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2003 Jaguar XJRFACTORY OEM SERVICE PROCEDURE

Connector Pin Identity Chart for FC043

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Jaguar XKR, 2006 Jaguar XK8, 2005 Jaguar XKR, 2005 Jaguar XK8, and 2004 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Connector Pin For FC043

Courtesy of JAGUAR CARS, INC.

Pin Number	Circuit	Circuit Function
1		Input CLOCK
2		Input START
3		Input DATA IN
4		Output DATA OUT
5		Input ignition (positive)
6		Input auxiliary (negative)
7		Ground
8		Dimmer
9		Dimmer override
10		Not used
11		Not used
12		Not used

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.