1.6D Rapid OBD2 Test cycle pattern

[WotNotAgain]

My 2013 Rapid 1.6TDI Greentech CR SE has covered 42,500 miles and the Engine Management light has come on. Previously had a wring fault at wiring over grearbox casing, fixed and discounted as the current issue. Garage checked for faults (twice) and could not find anything, the warning light goes off, but soon comes back on again. Performance appears to be unaffected - strong pulling torque etc. and a recent 500+ mile journey at the weekend returned 67.7mpg on outward leg (3 adults and luggage) and 76.4mpg on return leg (2 adults and luggage), so ecconomy does not seem to be affected much. No bad exhaust smoke or misfires and runs smoothe. Where can I obtain OBD2 test cycle plan for my Rapid to carry out full diagnostic test cycle?