Battery - Checking Constant Current Draw

88porsche10

Subject: Constant Current Draw
Model

928 S4
Group

2
Part Identifier

2706
Number

8812
December 2, 1988
When checking constant current draw on a battery, proceed as follows:

1. Remove ignition key from ignition switch.

2. Open rear hatch and disconnect two-pin connector for rear hatch switch.

3. Lock doors.

4. Disconnect battery ground cable from body.

5. Connect ammeter between ground cable and body. Reading: After approximately 15 seconds maximum 30 milliamps.

Important: Several components such as temperature sensors continue to draw current after engine is shut off. Therefore, this test should only be performed after engine is turned off for at least 45 minutes.