An electronically controlled instrument cluster is being diagnosed for no speedometer operation. Which of the following statements is most correct?
A) If the BCM and/or cluster module passes it's self-test, the fault is probably in the vehicle speed sensor circuit.
B)If the speedometer does not work but the odometer does, then the problem is probably in the vehicle speed sensor circuit.
C)If the speedometer fails to move during the self-test, the problem is probably in the vehicle speed sensor circuit.
D) All of these choices.

Question

Quizplus · Accepted Answer

If the BCM and/or cluster module passes its self-test, it indicates that the instrument cluster and BCM are communicating properly. Therefore, the fault is likely in the vehicle speed sensor circuit. Option B is incorrect because if the odometer is working, it means that the vehicle speed sensor is functional and sending signals to the cluster. Option C is incorrect because if the speedometer fails to move during the self-test, it indicates a fault in the instrument cluster itself.

An Electronically Controlled Instrument Cluster Is Being Diagnosed for No