Test D: All The Chimes Are Inoperative

PINPOINT TEST D: ALL THE CHIMES ARE INOPERATIVE

Test D1-D2:

Normal Operation
The warning chime is an integral part of the instrument cluster. The instrument cluster sounds the warning chimes after receiving hardwired and data signal inputs from the vehicle security module and the restraint control module (RCM). Data input signals are transmitted to the instrument cluster over the (UART)-based protocol (UBP) communication network, circuit 1906 (PK).

Possible Causes
- circuitry
- instrument cluster