B1-2: Preparatory Work

Preparatory work

Operations B1-2

B1



Withdraw the Connector from the ignition system control unit

Safety precaution. This is also necessary on some models to enable the fuel pump to be started.

B2



Withdraw the connectors from:
- control pressure regulator
- auxiliary air valve (not fitted on vehicles with constant idle system).

Note:
It is necessary to disconnect these components otherwise they will heat up during the inspection and invalidate any measurements taken.
If one of the components remains connected, it can take as long as 1 hour before it cools down to the surrounding temperature.