Diagnostic control unit (dcu)

5. If the rotary coupler is being re-used place adhesive tape around moulding to prevent rotation.
6. Disconnect 2 multiplugs from rotary coupler.
7. Remove 4 screws and remove rotary coupler.

CAUTION: Do not dismantle the rotary coupler, it has no serviceable parts and must be replaced as a complete assembly.

Refit

CAUTION: Ensure front road wheels are in the straight ahead position.

1. Ensure the rotary coupler is installed in its centred position, as indicated by the white segment on the indicator wheel.
2. Fit rotary coupler and secure with screws.
3. Connect multiplugs to rotary coupler.
4. Fit upper and lower halves of nacelle to steering column and tighten screws.
5. If fitting existing rotary coupler, remove retaining tape from rotary coupler. If fitting new rotary coupler, remove blue locking tab from rotary coupler.
6. Fit steering wheel. See STEERING, Repairs.

DIAGNOSTIC CONTROL UNIT (DCU)

Service repair no - 76.74.68 Service repair no - 76.74.68/20

Remove

WARNING: See GENERAL INFORMATION, SRS Precautions.

1. Make the SRS system safe. See GENERAL INFORMATION, SRS Precautions.
2. Remove heater assembly. See HEATING & VENTILATION, Repairs.

Models with air conditioning fitted

3. Disconnect 2 multiplugs from air conditioning switches.

4. Remove 2 nuts securing evaporator.
5. Release evaporator from drain hose and air intake.
6. Remove evaporator.
7. Collect air duct and pipe seal.