Weichai America Corp.
84
When providing warranty service for user, check the alternator on vehicle for malfunction. Tool:
test lamp, the process is as shown in figure 11-3.
Figure 11-3 Diagnosis Trouble Flow Chart for Alternator
2. Failure diagnosis & troubleshooting method of charging system
a) It is not charging
Failure 1: It is not charging
Turn on the power switch of the vehicle, and connect the test
lamp to the terminal B+ and E (negative pole) of the
Connect the wire from terminal E to
terminal D+ of the alternator
It indicates that the internal electric circuit of wiring
terminal D+ of the alternator is malfunctioning
It indicates that there is no voltage at wiring
terminal B+ of alternator and the wire to the positive
pole of battery is malfunctioning
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