15.7
Checking the ca�acitor
601204-10
=t
601204-11
15 WIRING HARNESS, BATTERY
Main work
Disconnect the negative cable of the battery.
Measure the current between battery ground (-) and the neg
ative cable.
•
Info
I
The value of the quiescent current applies only to
vehicles in the original state, i.e. without additional
power consumers.
I Maximum open-circuit
current
I<
1.0 mA
If the measured value is greater than the specified value:
Disconnect the voltage regulator from the wiring har
ness and perform the measurement again.
- Check the capacitor. (
i!i,.!1
p. 133)
Remove the capacitor.
Discharge the capacitor by bridging the two contacts.
Connect the capacitor with a 12 V test lamp on one connec
tor and connect it to the battery as shown in the figure.
•
Info
41
I
As the charge of the capacitor increases, the test lamp
becomes dimmer.
The lamp lights up for: 0.5 ... 2.0 s
The capacitor is functional.
The lamp lights up for: < 0.5 s
Change the capacitor.
The lamp lights up for: > 2.0 s
Change the capacitor.
Discharge the capacitor with a 12 V test lamp as shown in the
figure.
•
Info
I
As the charge of the capacitor decreases, the test
lamp becomes dimmer.
The lamp lights up for: 0.5 ... 2.0 s
The capacitor is functional.
The lamp lights up for: < 0.5 s
Change the capacitor.
The lamp lights up for: > 2.0 s
Change the capacitor.
Install the capacitor.
133