Pinpoint Test 1

PINPOINT TEST 1: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER

Step 1:

Step 2:

Normal Operation
The instrument cluster communicates interactively with other electronic modules using the controller area network (CAN). High speed CAN communication is accomplished through the use of an un-shielded, twisted pair cable data bus line, circuits (W) and (B). Medium speed CAN communication is accomplished through the use of an un-shielded, twisted pair cable data bus line, circuits (W/O) and (P/O). For additional information about the communications network, see COMMUNICATIONS NETWORK. With the ignition switch in the START/RUN position, the instrument cluster receives power from circuit (B/LG). When in the RUN/ACC position, power is received from circuit (B/P). With the ignition switch in the OFF position, the instrument cluster receives its keep-alive power from circuit (O/LG). The instrument cluster grounding is accomplished through circuit (B/W) and the bulb grounding is accomplished through circuit (B).

Possible Causes
- circuit (B) open
- circuit (B/W) open
- circuit (O/LG) open
- circuit (B/P) open
- circuit (B/LG) open
- instrument cluster