Examination
To test the device, the following conditions must be met: the battery must be charged (minimum voltage 11.5 V), and the engine is cold (t=20°C).
Disconnect the connector from the heating device.
Connect a voltmeter to the live wire and "mass". Switch on the ignition and check the voltage. It should be 11.5 V.
Switch off the ignition.
Connect an ohmmeter as shown in the figure and check the resistance of the heating element. It should be 1.5 ohms.
Replace heating element if necessary.
Removing
Remove heating element 1 (see fig.C4563).
Installation
Before installing, clean the contact surfaces on the intake manifold.
Install a new heating element with a new O-ring 2 (see fig. C4563).
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