Diagnosis of electrical consumers in a motor vehicle
First Claim
1. An arrangement for checking an electrical consumer in a motor vehicle having an on-board network, the electrical consumer performing an assigned function during normal operation of the motor vehicle, the arrangement comprising:
- means for detecting an electrical quantity in said on-board network;
means for separating said electrical consumer from said assigned function and for triggering said electrical consumer in a special operating condition of said motor vehicle while said electrical consumer is separated from said assigned function; and
,means for evaluating said electrical quantity as a reaction to said triggering of said electrical consumer.
1 Assignment
0 Petitions
Accused Products
Abstract
A check of an electrical consumer in a motor vehicle is presented with the check being made by evaluating the on-board network voltage for changes in the operating state of the consumer which are triggered by the control apparatus in special operating states. The triggering takes place disengaged from the normal function of the consumer during normal operation. Examples of special operating states are the post-operation of the control apparatus after the switchoff of the internal combustion engine as well as a switchoff of the injection and/or of the ignition in an overrun operating phase.
9 Citations
13 Claims
-
1. An arrangement for checking an electrical consumer in a motor vehicle having an on-board network, the electrical consumer performing an assigned function during normal operation of the motor vehicle, the arrangement comprising:
-
means for detecting an electrical quantity in said on-board network; means for separating said electrical consumer from said assigned function and for triggering said electrical consumer in a special operating condition of said motor vehicle while said electrical consumer is separated from said assigned function; and
,means for evaluating said electrical quantity as a reaction to said triggering of said electrical consumer. - View Dependent Claims (2)
-
-
3. A method of checking an electrical consumer in a motor vehicle having an on-board network and a control apparatus operatively connected to the electrical consumer, the electrical consumer performing an assigned function during normal operation of the motor vehicle, the method comprising the steps of:
-
separating said electrical consumer from said assigned function; triggering changes in the operating state of said electrical consumer with said control apparatus during special operating conditions of said motor vehicle; detecting an electrical quantity of said on-board network; and
,evaluating changes of said electrical quantity in response to said triggering. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification