Measurement Of Closed−Circuit Current; Tools; Preparations On The Vehicle; Connecting Measuring Device - Porsche 996 TT Repair Manual

97 Measurement of closed−circuit current

Tools

Preparations on the vehicle

Measurement
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Tools
Closed−circuit current should be measured using an analog ammeter or a digital multimeter with a long
integration time (to filter out voltage peaks).
Item Special tool designation
−1− Multimeter 155
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Preparations on the vehicle
Note
• Before measuring the closed−circuit current, determine the vehicle equipment (M−numbers) and
establish the expected closed−circuit current with the aid of the attached table. => Measurement
1. Open the front luggage compartment.
2. Close the lower part of the lock of the luggage−compartment lid with a suitable tool − e.g.
upper part of the lock with a suitable grip − with the luggage−compartment lid open.
3. Remove the ignition key and lock the vehicle with the key (alarm system is
activated).

Connecting measuring device

1. Set the measuring device to the highest possible current measuring
device.
2. With two alligator clips, connect the measuring instrument to the battery ground and to the second body
97 Measurement of closed−circuit current
Remarks
Gr. 2.5; Workshop Equipment Manual
321