Check that the keyway on the end of the camshaft is in good condition and without burrs.

Fit a woodruff key (b) in the keyway of each camshaft.

Fit the pulley (11) on the camshaft, inserting the woodruff key in the in the slot (c) in the pulley.
Apply the recommended grease to the threads on the end of the camshaft.
Repeat the procedure on the other camshaft.

Insert the tool code 88713.1806 Into the pulleys to prevent rotation.
Apply the recommended grease to the mating face of the nut (21).
Fit the nut (21).
Carry out the same operations on the other camshaft.
Important
Always fit new nuts on reassembly.

Using the bush supplied with tool with part no. 88713.1806 And a torque wrench, tighten the ring nuts (21) to the specified torque of 71 nm (min. 64 Nm - max. 78 Nm) (sect. 3 - 3, Engine torque settings).

Insert the fixed tensioners (13), with bearings and washers (7), into the cylinder head pins and tighten the nuts (8) to a torque of 25 nm (min. 22 Nm - max. 28 Nm) (sect. 3 - 3, Engine torque settings).

Undo the locking screws (22) of the pulleys, turning them anti-clockwise through 90 +/- 5.
Check that the pulleys have no end float and can rotate freely at all points along the full length of the slots.

Reassembly of the timing pulleys
Refitting the timing beltsRefitting the intake manifold and coolant union
Apply prescribed threadlocker to the fitting (12), start it with seal (24)
and tighten it to a torque of 2.5 Nm (min. 2 Nm -
max. 3 Nm) (sect. 3 - 3, Frame torque settings).
Install the pipe (b) and tighten the clamp (a) to the torque of 1 nm +/- 10%
(sect. 3 - 3, Engine torque settings).
...
Horn not working
Fault codes
Dds: horn diagnosis -> short circuit to ground (s.C. Gnd).
Dashboard: the error "claxon" (horn) is shown on the service display. The eobd
warning light activates.
Wiring diagram
Db dashboard connection, s horn button. 5 Blue/white - b/w, 1 red/blue - r/b,
db 19 purple/bl ...
Removal the airbox and throttle body
Loosen the screws (a) and remove the plate (b) that fixes the main wiring to
the airbox.
Undo the screws (17) and remove the air pressure sensors (9) with the support
(19).
Release the hoses (c) of the air pressure sensors (9) from the tab (d) on the
airbox.
Operating on the ...